Adding upstream version 4:24.2.0.upstream/4%24.2.0

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

60 files changed, 14293 insertions, 0 deletions

diff --git a/unoxml/source/dom/attr.cxx b/unoxml/source/dom/attr.cxx
new file mode 100644
index 0000000000..d8d873cdf0
--- /dev/null
+++ b/unoxml/source/dom/attr.cxx
@@ -0,0 +1,269 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include "attr.hxx"
+
+#include <string.h>
+
+#include <memory>
+#include <libxml/entities.h>
+
+#include <osl/diagnose.h>
+#include <sal/log.hxx>
+
+#include <com/sun/star/xml/dom/events/XMutationEvent.hpp>
+
+#include "document.hxx"
+
+using namespace css::uno;
+using namespace css::xml::dom;
+using namespace css::xml::dom::events;
+
+namespace DOM
+{
+    CAttr::CAttr(CDocument const& rDocument, ::osl::Mutex const& rMutex,
+            xmlAttrPtr const pAttr)
+        : CAttr_Base(rDocument, rMutex,
+                NodeType_ATTRIBUTE_NODE, reinterpret_cast<xmlNodePtr>(pAttr))
+        , m_aAttrPtr(pAttr)
+    {
+    }
+
+    xmlNsPtr CAttr::GetNamespace(xmlNodePtr const pNode)
+    {
+        if (!m_oNamespace)
+        {
+            return nullptr;
+        }
+        xmlChar const*const pUri(reinterpret_cast<xmlChar const*>(
+                m_oNamespace->first.getStr()));
+        xmlChar const*const pPrefix(reinterpret_cast<xmlChar const*>(
+                m_oNamespace->second.getStr()));
+        xmlNsPtr pNs = xmlSearchNs(pNode->doc, pNode, pPrefix);
+        if (pNs && (0 != xmlStrcmp(pNs->href, pUri))) {
+            return pNs;
+        }
+        pNs = xmlNewNs(pNode, pUri, pPrefix);
+        if (pNs) {
+            return pNs;
+        }
+        pNs = xmlSearchNsByHref(pNode->doc, pNode, pUri);
+        // if (!pNs) hmm... now what? throw?
+        if (!pNs) {
+            SAL_WARN("unoxml", "CAttr: cannot create namespace");
+        }
+        return pNs;
+    }
+
+    bool CAttr::IsChildTypeAllowed(NodeType const nodeType, NodeType const*const)
+    {
+        switch (nodeType) {
+            case NodeType_TEXT_NODE:
+            case NodeType_ENTITY_REFERENCE_NODE:
+                return true;
+            default:
+                return false;
+        }
+    }
+
+    OUString SAL_CALL CAttr::getNodeName()
+    {
+        return getName();
+    }
+    OUString SAL_CALL CAttr::getNodeValue()
+    {
+        return getValue();
+    }
+    OUString SAL_CALL CAttr::getLocalName()
+    {
+        return getName();
+    }
+
+
+    /**
+    Returns the name of this attribute.
+    */
+    OUString SAL_CALL CAttr::getName()
+    {
+        ::osl::MutexGuard const g(m_rMutex);
+
+        if ((nullptr == m_aNodePtr) || (nullptr == m_aAttrPtr)) {
+            return OUString();
+        }
+        OUString const aName(reinterpret_cast<char const *>(m_aAttrPtr->name),
+                strlen(reinterpret_cast<char const *>(m_aAttrPtr->name)), RTL_TEXTENCODING_UTF8);
+        return aName;
+    }
+
+    /**
+    The Element node this attribute is attached to or null if this
+    attribute is not in use.
+    */
+    Reference< XElement > SAL_CALL CAttr::getOwnerElement()
+    {
+        ::osl::MutexGuard const g(m_rMutex);
+
+        if ((nullptr == m_aNodePtr) || (nullptr == m_aAttrPtr)) {
+            return nullptr;
+        }
+        if (nullptr == m_aAttrPtr->parent) {
+            return nullptr;
+        }
+        Reference< XElement > const xRet(
+            static_cast< XNode* >(GetOwnerDocument().GetCNode(
+                    m_aAttrPtr->parent).get()),
+            UNO_QUERY_THROW);
+        return xRet;
+    }
+
+    /**
+    If this attribute was explicitly given a value in the original
+    document, this is true; otherwise, it is false.
+    */
+    sal_Bool SAL_CALL CAttr::getSpecified()
+    {
+        // FIXME if this DOM implementation supported DTDs it would need
+        // to check that this attribute is not default or something
+        return true;
+    }
+
+    /**
+    On retrieval, the value of the attribute is returned as a string.
+    */
+    OUString SAL_CALL CAttr::getValue()
+    {
+        ::osl::MutexGuard const g(m_rMutex);
+
+        if ((nullptr == m_aNodePtr) || (nullptr == m_aAttrPtr)) {
+            return OUString();
+        }
+        if (nullptr == m_aAttrPtr->children) {
+            return OUString();
+        }
+        char const*const pContent(reinterpret_cast<char const*>(m_aAttrPtr->children->content));
+        return OUString(pContent, strlen(pContent), RTL_TEXTENCODING_UTF8);
+    }
+
+    /**
+    Sets the value of the attribute from a string.
+    */
+    void SAL_CALL CAttr::setValue(const OUString& value)
+    {
+        ::osl::ClearableMutexGuard guard(m_rMutex);
+
+        if ((nullptr == m_aNodePtr) || (nullptr == m_aAttrPtr)) {
+            return;
+        }
+
+        // remember old value (for mutation event)
+        OUString sOldValue = getValue();
+
+        OString o1 = OUStringToOString(value, RTL_TEXTENCODING_UTF8);
+        xmlChar const * pValue = reinterpret_cast<xmlChar const *>(o1.getStr());
+        // this does not work if the attribute was created anew
+        // xmlNodePtr pNode = m_aAttrPtr->parent;
+        // xmlSetProp(pNode, m_aAttrPtr->name, pValue);
+        std::shared_ptr<xmlChar const> const buffer(
+                xmlEncodeEntitiesReentrant(m_aAttrPtr->doc, pValue), xmlFree);
+        xmlFreeNodeList(m_aAttrPtr->children);
+        m_aAttrPtr->children =
+            xmlStringGetNodeList(m_aAttrPtr->doc, buffer.get());
+        xmlNodePtr tmp = m_aAttrPtr->children;
+        while (tmp != nullptr) {
+            tmp->parent = m_aNodePtr;
+            tmp->doc = m_aAttrPtr->doc;
+            if (tmp->next == nullptr)
+                m_aNodePtr->last = tmp;
+            tmp = tmp->next;
+        }
+
+        // dispatch DOM events to signal change in attribute value
+        // dispatch DomAttrModified + DOMSubtreeModified
+        OUString sEventName( "DOMAttrModified" );
+        Reference< XDocumentEvent > docevent(getOwnerDocument(), UNO_QUERY);
+        Reference< XMutationEvent > event(docevent->createEvent(sEventName),UNO_QUERY);
+        event->initMutationEvent(
+                sEventName, true, false,
+                Reference<XNode>( static_cast<XAttr*>( this ) ),
+                sOldValue, value, getName(), AttrChangeType_MODIFICATION );
+
+        guard.clear(); // release mutex before calling event handlers
+
+        dispatchEvent(event);
+        dispatchSubtreeModified();
+    }
+
+    void SAL_CALL CAttr::setPrefix(const OUString& prefix)
+    {
+        ::osl::MutexGuard const g(m_rMutex);
+
+        if (!m_aNodePtr) { return; }
+
+        if (m_oNamespace)
+        {
+            OSL_ASSERT(!m_aNodePtr->parent);
+            m_oNamespace->second =
+                OUStringToOString(prefix, RTL_TEXTENCODING_UTF8);
+        }
+        else
+        {
+            CNode::setPrefix(prefix);
+        }
+    }
+
+    OUString SAL_CALL CAttr::getPrefix()
+    {
+        ::osl::MutexGuard const g(m_rMutex);
+
+        if (!m_aNodePtr) { return OUString(); }
+
+        if (m_oNamespace)
+        {
+            OSL_ASSERT(!m_aNodePtr->parent);
+            OUString const ret(OStringToOUString(
+                        m_oNamespace->second, RTL_TEXTENCODING_UTF8));
+            return ret;
+        }
+        else
+        {
+            return CNode::getPrefix();
+        }
+    }
+
+    OUString SAL_CALL CAttr::getNamespaceURI()
+    {
+        ::osl::MutexGuard const g(m_rMutex);
+
+        if (!m_aNodePtr) { return OUString(); }
+
+        if (m_oNamespace)
+        {
+            OSL_ASSERT(!m_aNodePtr->parent);
+            OUString const ret(OStringToOUString(
+                        m_oNamespace->first, RTL_TEXTENCODING_UTF8));
+            return ret;
+        }
+        else
+        {
+            return CNode::getNamespaceURI();
+        }
+    }
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/unoxml/source/dom/attr.hxx b/unoxml/source/dom/attr.hxx
new file mode 100644
index 0000000000..5c32968e28
--- /dev/null
+++ b/unoxml/source/dom/attr.hxx
@@ -0,0 +1,179 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#pragma once
+
+#include <memory>
+#include <optional>
+
+#include <libxml/tree.h>
+
+#include <cppuhelper/implbase.hxx>
+
+#include <com/sun/star/uno/Reference.h>
+#include <com/sun/star/xml/dom/XNode.hpp>
+#include <com/sun/star/xml/dom/XAttr.hpp>
+
+#include <node.hxx>
+
+namespace DOM
+{
+    typedef ::std::pair< OString, OString > stringpair_t;
+
+    typedef ::cppu::ImplInheritanceHelper< CNode, css::xml::dom::XAttr > CAttr_Base;
+
+    class CAttr
+        : public CAttr_Base
+    {
+        friend class CDocument;
+
+        xmlAttrPtr m_aAttrPtr;
+        ::std::optional< stringpair_t > m_oNamespace;
+
+        CAttr(CDocument const& rDocument, ::osl::Mutex const& rMutex,
+                xmlAttrPtr const pAttr);
+
+    public:
+        /// return the libxml namespace corresponding to m_pNamespace on pNode
+        xmlNsPtr GetNamespace(xmlNodePtr const pNode);
+
+        virtual bool IsChildTypeAllowed(css::xml::dom::NodeType const nodeType,
+                        css::xml::dom::NodeType const*) override;
+
+        /**
+        Returns the name of this attribute.
+        */
+        virtual OUString SAL_CALL getName() override;
+
+        /**
+        The Element node this attribute is attached to or null if this
+        attribute is not in use.
+        */
+        virtual css::uno::Reference< css::xml::dom::XElement > SAL_CALL getOwnerElement() override;
+
+        /**
+        If this attribute was explicitly given a value in the original
+        document, this is true; otherwise, it is false.
+        */
+        virtual sal_Bool SAL_CALL getSpecified() override;
+
+        /**
+        On retrieval, the value of the attribute is returned as a string.
+        */
+        virtual OUString SAL_CALL getValue() override;
+
+        /**
+        Sets the value of the attribute from a string.
+        */
+
+        virtual void SAL_CALL setValue(const OUString& value) override;
+
+        // resolve uno inheritance problems...
+        // overrides for XNode base
+        virtual OUString SAL_CALL getNodeName() override;
+        virtual OUString SAL_CALL getNodeValue() override;
+        virtual OUString SAL_CALL getLocalName() override;
+
+    // --- delegation for XNode base.
+    virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL appendChild(const css::uno::Reference< css::xml::dom::XNode >& newChild) override
+    {
+        return CNode::appendChild(newChild);
+    }
+    virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL cloneNode(sal_Bool deep) override
+    {
+        return CNode::cloneNode(deep);
+    }
+    virtual css::uno::Reference< css::xml::dom::XNamedNodeMap > SAL_CALL getAttributes() override
+    {
+        return CNode::getAttributes();
+    }
+    virtual css::uno::Reference< css::xml::dom::XNodeList > SAL_CALL getChildNodes() override
+    {
+        return CNode::getChildNodes();
+    }
+    virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL getFirstChild() override
+    {
+        return CNode::getFirstChild();
+    }
+    virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL getLastChild() override
+    {
+        return CNode::getLastChild();
+    }
+    virtual OUString SAL_CALL getNamespaceURI() override;
+    virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL getNextSibling() override
+    {
+        return CNode::getNextSibling();
+    }
+    virtual css::xml::dom::NodeType SAL_CALL getNodeType() override
+    {
+        return CNode::getNodeType();
+    }
+    virtual css::uno::Reference< css::xml::dom::XDocument > SAL_CALL getOwnerDocument() override
+    {
+        return CNode::getOwnerDocument();
+    }
+    virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL getParentNode() override
+    {
+        return CNode::getParentNode();
+    }
+    virtual OUString SAL_CALL getPrefix() override;
+    virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL getPreviousSibling() override
+    {
+        return CNode::getPreviousSibling();
+    }
+    virtual sal_Bool SAL_CALL hasAttributes() override
+    {
+        return CNode::hasAttributes();
+    }
+    virtual sal_Bool SAL_CALL hasChildNodes() override
+    {
+        return CNode::hasChildNodes();
+    }
+    virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL insertBefore(
+            const css::uno::Reference< css::xml::dom::XNode >& newChild, const css::uno::Reference< css::xml::dom::XNode >& refChild) override
+    {
+        return CNode::insertBefore(newChild, refChild);
+    }
+    virtual sal_Bool SAL_CALL isSupported(const OUString& feature, const OUString& ver) override
+    {
+        return CNode::isSupported(feature, ver);
+    }
+    virtual void SAL_CALL normalize() override
+    {
+        CNode::normalize();
+    }
+    virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL removeChild(const css::uno::Reference< css::xml::dom::XNode >& oldChild) override
+    {
+        return CNode::removeChild(oldChild);
+    }
+    virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL replaceChild(
+            const css::uno::Reference< css::xml::dom::XNode >& newChild, const css::uno::Reference< css::xml::dom::XNode >& oldChild) override
+    {
+        return CNode::replaceChild(newChild, oldChild);
+    }
+    virtual void SAL_CALL setNodeValue(const OUString& nodeValue) override
+    {
+        return setValue(nodeValue);
+    }
+    virtual void SAL_CALL setPrefix(const OUString& prefix) override;
+
+    };
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/unoxml/source/dom/attributesmap.cxx b/unoxml/source/dom/attributesmap.cxx
new file mode 100644
index 0000000000..f629d4cb3f
--- /dev/null
+++ b/unoxml/source/dom/attributesmap.cxx
@@ -0,0 +1,227 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include "attributesmap.hxx"
+
+#include <string.h>
+
+#include <com/sun/star/xml/dom/DOMException.hpp>
+#include <utility>
+
+#include "element.hxx"
+#include "document.hxx"
+
+using namespace css::uno;
+using namespace css::xml::dom;
+
+namespace DOM
+{
+    CAttributesMap::CAttributesMap(::rtl::Reference<CElement> pElement,
+                ::osl::Mutex & rMutex)
+        : m_pElement(std::move(pElement))
+        , m_rMutex(rMutex)
+    {
+    }
+
+    /**
+    The number of nodes in this map.
+    */
+    sal_Int32 SAL_CALL CAttributesMap::getLength()
+    {
+        ::osl::MutexGuard const g(m_rMutex);
+
+        sal_Int32 count = 0;
+        xmlNodePtr pNode = m_pElement->GetNodePtr();
+        if (pNode != nullptr)
+        {
+            xmlAttrPtr cur = pNode->properties;
+            while (cur != nullptr)
+            {
+                count++;
+                cur = cur->next;
+            }
+        }
+        return count;
+    }
+
+    /**
+    Retrieves a node specified by local name
+    */
+    Reference< XNode > SAL_CALL
+    CAttributesMap::getNamedItem(OUString const& name)
+    {
+        ::osl::MutexGuard const g(m_rMutex);
+
+        Reference< XNode > aNode;
+        xmlNodePtr pNode = m_pElement->GetNodePtr();
+        if (pNode != nullptr)
+        {
+            OString o1 = OUStringToOString(name, RTL_TEXTENCODING_UTF8);
+            xmlChar const * pName = reinterpret_cast<xmlChar const *>(o1.getStr());
+            xmlAttrPtr cur = pNode->properties;
+            while (cur != nullptr)
+            {
+                if( strcmp(reinterpret_cast<char const *>(pName), reinterpret_cast<char const *>(cur->name)) == 0)
+                {
+                    aNode = m_pElement->GetOwnerDocument().GetCNode(
+                                   reinterpret_cast<xmlNodePtr>(cur));
+                    break;
+                }
+                cur = cur->next;
+            }
+        }
+        return aNode;
+    }
+
+    /**
+    Retrieves a node specified by local name and namespace URI.
+    */
+    Reference< XNode > SAL_CALL
+    CAttributesMap::getNamedItemNS(
+            OUString const& namespaceURI, OUString const& localName)
+    {
+        ::osl::MutexGuard const g(m_rMutex);
+
+        Reference< XNode > aNode;
+        xmlNodePtr pNode = m_pElement->GetNodePtr();
+        if (pNode != nullptr)
+        {
+            OString o1 = OUStringToOString(localName, RTL_TEXTENCODING_UTF8);
+            xmlChar const * pName = reinterpret_cast<xmlChar const *>(o1.getStr());
+            OString o2 = OUStringToOString(namespaceURI, RTL_TEXTENCODING_UTF8);
+            xmlChar const* pSearchNs =
+                reinterpret_cast<xmlChar const*>(o2.getStr());
+            xmlNsPtr const pNs = xmlSearchNsByHref(pNode->doc, pNode, pSearchNs);
+            xmlAttrPtr cur = pNode->properties;
+            while (cur != nullptr && pNs != nullptr)
+            {
+                if( strcmp(reinterpret_cast<char const *>(pName), reinterpret_cast<char const *>(cur->name)) == 0 &&
+                    cur->ns == pNs)
+                {
+                    aNode = m_pElement->GetOwnerDocument().GetCNode(
+                                  reinterpret_cast<xmlNodePtr>(cur));
+                    break;
+                }
+                cur = cur->next;
+            }
+        }
+        return aNode;
+    }
+
+    /**
+    Returns the indexth item in the map.
+    */
+    Reference< XNode > SAL_CALL
+    CAttributesMap::item(sal_Int32 index)
+    {
+        ::osl::MutexGuard const g(m_rMutex);
+
+        Reference< XNode > aNode;
+        xmlNodePtr pNode = m_pElement->GetNodePtr();
+        if (pNode != nullptr)
+        {
+            xmlAttrPtr cur = pNode->properties;
+            sal_Int32 count = 0;
+            while (cur != nullptr)
+            {
+                if (count == index)
+                {
+                    aNode = m_pElement->GetOwnerDocument().GetCNode(
+                                reinterpret_cast<xmlNodePtr>(cur));
+                    break;
+                }
+                count++;
+                cur = cur->next;
+            }
+        }
+        return aNode;
+    }
+
+    /**
+    Removes a node specified by name.
+    */
+    Reference< XNode > SAL_CALL
+    CAttributesMap::removeNamedItem(OUString const& name)
+    {
+        // no MutexGuard needed: m_pElement is const
+        Reference< XAttr > const xAttr(m_pElement->getAttributeNode(name));
+        if (!xAttr.is()) {
+            throw DOMException(
+                "CAttributesMap::removeNamedItem: no such attribute",
+                getXWeak(),
+                DOMExceptionType_NOT_FOUND_ERR);
+        }
+        return m_pElement->removeAttributeNode(xAttr);
+    }
+
+    /**
+    // Removes a node specified by local name and namespace URI.
+    */
+    Reference< XNode > SAL_CALL
+    CAttributesMap::removeNamedItemNS(
+            OUString const& namespaceURI, OUString const& localName)
+    {
+        // no MutexGuard needed: m_pElement is const
+        Reference< XAttr > const xAttr(
+            m_pElement->getAttributeNodeNS(namespaceURI, localName));
+        if (!xAttr.is()) {
+            throw DOMException(
+                "CAttributesMap::removeNamedItemNS: no such attribute",
+                getXWeak(),
+                DOMExceptionType_NOT_FOUND_ERR);
+        }
+        return m_pElement->removeAttributeNode(xAttr);
+    }
+
+    /**
+    // Adds a node using its nodeName attribute.
+    */
+    Reference< XNode > SAL_CALL
+    CAttributesMap::setNamedItem(Reference< XNode > const& xNode)
+    {
+        Reference< XAttr > const xAttr(xNode, UNO_QUERY);
+        if (!xNode.is()) {
+            throw DOMException(
+                "CAttributesMap::setNamedItem: XAttr argument expected",
+                getXWeak(),
+                DOMExceptionType_HIERARCHY_REQUEST_ERR);
+        }
+        // no MutexGuard needed: m_pElement is const
+        return m_pElement->setAttributeNode(xAttr);
+    }
+
+    /**
+    Adds a node using its namespaceURI and localName.
+    */
+    Reference< XNode > SAL_CALL
+    CAttributesMap::setNamedItemNS(Reference< XNode > const& xNode)
+    {
+        Reference< XAttr > const xAttr(xNode, UNO_QUERY);
+        if (!xNode.is()) {
+            throw DOMException(
+                "CAttributesMap::setNamedItemNS: XAttr argument expected",
+                getXWeak(),
+                DOMExceptionType_HIERARCHY_REQUEST_ERR);
+        }
+        // no MutexGuard needed: m_pElement is const
+        return m_pElement->setAttributeNodeNS(xAttr);
+    }
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/unoxml/source/dom/attributesmap.hxx b/unoxml/source/dom/attributesmap.hxx
new file mode 100644
index 0000000000..994cd72b0a
--- /dev/null
+++ b/unoxml/source/dom/attributesmap.hxx
@@ -0,0 +1,95 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#pragma once
+
+#include <sal/types.h>
+#include <rtl/ref.hxx>
+
+#include <com/sun/star/uno/Reference.h>
+#include <com/sun/star/xml/dom/XNode.hpp>
+#include <com/sun/star/xml/dom/XNamedNodeMap.hpp>
+
+#include <cppuhelper/implbase.hxx>
+
+#include "element.hxx"
+
+namespace DOM
+{
+    class CElement;
+
+    class CAttributesMap
+        : public cppu::WeakImplHelper< css::xml::dom::XNamedNodeMap >
+    {
+    private:
+        ::rtl::Reference<CElement> const m_pElement;
+        ::osl::Mutex & m_rMutex;
+
+    public:
+        CAttributesMap(::rtl::Reference<CElement> pElement,
+                ::osl::Mutex & rMutex);
+
+        /**
+        The number of nodes in this map.
+        */
+        virtual sal_Int32 SAL_CALL getLength() override;
+
+        /**
+        Retrieves a node specified by local name
+        */
+        virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL getNamedItem(OUString const& name) override;
+
+        /**
+        Retrieves a node specified by local name and namespace URI.
+        */
+        virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL getNamedItemNS(
+                OUString const& namespaceURI, OUString const& localName) override;
+
+        /**
+        Returns the indexth item in the map.
+        */
+        virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL item(sal_Int32 index) override;
+
+        /**
+        Removes a node specified by name.
+        */
+        virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL
+            removeNamedItem(OUString const& name) override;
+
+        /**
+        // Removes a node specified by local name and namespace URI.
+        */
+        virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL removeNamedItemNS(
+                OUString const& namespaceURI, OUString const& localName) override;
+
+        /**
+        // Adds a node using its nodeName attribute.
+        */
+        virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL
+            setNamedItem(css::uno::Reference< css::xml::dom::XNode > const& arg) override;
+
+        /**
+        Adds a node using its namespaceURI and localName.
+        */
+        virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL
+            setNamedItemNS(css::uno::Reference< css::xml::dom::XNode > const& arg) override;
+    };
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/unoxml/source/dom/cdatasection.cxx b/unoxml/source/dom/cdatasection.cxx
new file mode 100644
index 0000000000..47dc773893
--- /dev/null
+++ b/unoxml/source/dom/cdatasection.cxx
@@ -0,0 +1,60 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include "cdatasection.hxx"
+
+#include <com/sun/star/xml/sax/XExtendedDocumentHandler.hpp>
+
+using namespace css::uno;
+using namespace css::xml::dom;
+using namespace css::xml::sax;
+
+namespace DOM
+{
+    CCDATASection::CCDATASection(
+            CDocument const& rDocument, ::osl::Mutex const& rMutex,
+            xmlNodePtr const pNode)
+        : CCDATASection_Base(rDocument, rMutex,
+                NodeType_CDATA_SECTION_NODE, pNode)
+    {
+    }
+
+    void CCDATASection::saxify(const Reference< XDocumentHandler >& i_xHandler)
+    {
+        if (!i_xHandler.is()) throw RuntimeException();
+        Reference< XExtendedDocumentHandler > xExtended(i_xHandler, UNO_QUERY);
+        if (xExtended.is()) {
+            xExtended->startCDATA();
+            i_xHandler->characters(getData());
+            xExtended->endCDATA();
+        }
+    }
+
+    OUString SAL_CALL CCDATASection::getNodeName()
+    {
+        return "#cdata-section";
+    }
+
+    OUString SAL_CALL CCDATASection::getNodeValue()
+    {
+        return CCharacterData::getData();
+    }
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/unoxml/source/dom/cdatasection.hxx b/unoxml/source/dom/cdatasection.hxx
new file mode 100644
index 0000000000..0cd181ce6f
--- /dev/null
+++ b/unoxml/source/dom/cdatasection.hxx
@@ -0,0 +1,189 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#pragma once
+
+#include <com/sun/star/uno/Reference.h>
+#include <com/sun/star/xml/dom/XCDATASection.hpp>
+
+#include <cppuhelper/implbase.hxx>
+#include "text.hxx"
+
+namespace DOM
+{
+    typedef ::cppu::ImplInheritanceHelper< CText, css::xml::dom::XCDATASection >
+        CCDATASection_Base;
+
+    class CCDATASection
+        : public CCDATASection_Base
+    {
+        friend class CDocument;
+
+        CCDATASection(CDocument const& rDocument, ::osl::Mutex const& rMutex,
+                xmlNodePtr const pNode);
+
+    public:
+
+        virtual void saxify(const css::uno::Reference< css::xml::sax::XDocumentHandler >& i_xHandler) override;
+
+        virtual css::uno::Reference< css::xml::dom::XText > SAL_CALL splitText(sal_Int32 offset) override
+        {
+            return CText::splitText(offset);
+        }
+
+         // --- delegations for XCharacterData
+        virtual void SAL_CALL appendData(const OUString& arg) override
+        {
+            CCharacterData::appendData(arg);
+        }
+        virtual void SAL_CALL deleteData(sal_Int32 offset, sal_Int32 count) override
+        {
+            CCharacterData::deleteData(offset, count);
+        }
+        virtual OUString SAL_CALL getData() override
+        {
+            return CCharacterData::getData();
+        }
+        virtual sal_Int32 SAL_CALL getLength() override
+        {
+            return CCharacterData::getLength();
+        }
+        virtual void SAL_CALL insertData(sal_Int32 offset, const OUString& arg) override
+        {
+            CCharacterData::insertData(offset, arg);
+        }
+        virtual void SAL_CALL replaceData(sal_Int32 offset, sal_Int32 count, const OUString& arg) override
+        {
+            CCharacterData::replaceData(offset, count, arg);
+        }
+        virtual void SAL_CALL setData(const OUString& data) override
+        {
+            CCharacterData::setData(data);
+        }
+        virtual OUString SAL_CALL subStringData(sal_Int32 offset, sal_Int32 count) override
+        {
+            return CCharacterData::subStringData(offset, count);
+        }
+
+
+         // --- overrides for XNode base
+        virtual OUString SAL_CALL getNodeName() override;
+        virtual OUString SAL_CALL getNodeValue() override;
+
+    // --- delegation for XNode base.
+    virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL appendChild(const css::uno::Reference< css::xml::dom::XNode >& newChild) override
+    {
+        return CNode::appendChild(newChild);
+    }
+    virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL cloneNode(sal_Bool deep) override
+    {
+        return CNode::cloneNode(deep);
+    }
+    virtual css::uno::Reference< css::xml::dom::XNamedNodeMap > SAL_CALL getAttributes() override
+    {
+        return CNode::getAttributes();
+    }
+    virtual css::uno::Reference< css::xml::dom::XNodeList > SAL_CALL getChildNodes() override
+    {
+        return CNode::getChildNodes();
+    }
+    virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL getFirstChild() override
+    {
+        return CNode::getFirstChild();
+    }
+    virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL getLastChild() override
+    {
+        return CNode::getLastChild();
+    }
+    virtual OUString SAL_CALL getLocalName() override
+    {
+        return CNode::getLocalName();
+    }
+    virtual OUString SAL_CALL getNamespaceURI() override
+    {
+        return CNode::getNamespaceURI();
+    }
+    virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL getNextSibling() override
+    {
+        return CNode::getNextSibling();
+    }
+    virtual css::xml::dom::NodeType SAL_CALL getNodeType() override
+    {
+        return CNode::getNodeType();
+    }
+    virtual css::uno::Reference< css::xml::dom::XDocument > SAL_CALL getOwnerDocument() override
+    {
+        return CNode::getOwnerDocument();
+    }
+    virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL getParentNode() override
+    {
+        return CNode::getParentNode();
+    }
+    virtual OUString SAL_CALL getPrefix() override
+    {
+        return CNode::getPrefix();
+    }
+    virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL getPreviousSibling() override
+    {
+        return CNode::getPreviousSibling();
+    }
+    virtual sal_Bool SAL_CALL hasAttributes() override
+    {
+        return CNode::hasAttributes();
+    }
+    virtual sal_Bool SAL_CALL hasChildNodes() override
+    {
+        return CNode::hasChildNodes();
+    }
+    virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL insertBefore(
+            const css::uno::Reference< css::xml::dom::XNode >& newChild, const css::uno::Reference< css::xml::dom::XNode >& refChild) override
+    {
+        return CNode::insertBefore(newChild, refChild);
+    }
+    virtual sal_Bool SAL_CALL isSupported(const OUString& feature, const OUString& ver) override
+    {
+        return CNode::isSupported(feature, ver);
+    }
+    virtual void SAL_CALL normalize() override
+    {
+        CNode::normalize();
+    }
+    virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL removeChild(const css::uno::Reference< css::xml::dom::XNode >& oldChild) override
+    {
+        return CNode::removeChild(oldChild);
+    }
+    virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL replaceChild(
+            const css::uno::Reference< css::xml::dom::XNode >& newChild, const css::uno::Reference< css::xml::dom::XNode >& oldChild) override
+    {
+        return CNode::replaceChild(newChild, oldChild);
+    }
+    virtual void SAL_CALL setNodeValue(const OUString& nodeValue) override
+    {
+        return CText::setNodeValue(nodeValue);
+    }
+    virtual void SAL_CALL setPrefix(const OUString& prefix) override
+    {
+        return CNode::setPrefix(prefix);
+    }
+
+    };
+
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/unoxml/source/dom/characterdata.cxx b/unoxml/source/dom/characterdata.cxx
new file mode 100644
index 0000000000..fc58cc1f13
--- /dev/null
+++ b/unoxml/source/dom/characterdata.cxx
@@ -0,0 +1,264 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include "characterdata.hxx"
+
+#include <string.h>
+
+#include <memory>
+
+#include <osl/diagnose.h>
+
+#include <com/sun/star/xml/dom/DOMException.hpp>
+#include <com/sun/star/xml/dom/events/XDocumentEvent.hpp>
+#include <com/sun/star/xml/dom/events/XMutationEvent.hpp>
+
+using namespace css::uno;
+using namespace css::xml::dom;
+using namespace css::xml::dom::events;
+
+namespace DOM
+{
+
+    CCharacterData::CCharacterData(
+            CDocument const& rDocument, ::osl::Mutex const& rMutex,
+            NodeType const& reNodeType, xmlNodePtr const& rpNode)
+        : CCharacterData_Base(rDocument, rMutex, reNodeType, rpNode)
+    {
+    }
+
+    void CCharacterData::dispatchEvent_Impl(
+            OUString const& prevValue, OUString const& newValue)
+    {
+        Reference< XDocumentEvent > docevent(getOwnerDocument(), UNO_QUERY);
+        Reference< XMutationEvent > event(docevent->createEvent(
+            "DOMCharacterDataModified"), UNO_QUERY);
+        event->initMutationEvent(
+                "DOMCharacterDataModified",
+                true, false, Reference< XNode >(),
+                prevValue, newValue, OUString(), AttrChangeType(0) );
+        dispatchEvent(event);
+        dispatchSubtreeModified();
+    }
+
+    /**
+    Append the string to the end of the character data of the node.
+    */
+    void SAL_CALL CCharacterData::appendData(const OUString& arg)
+    {
+        ::osl::ClearableMutexGuard guard(m_rMutex);
+
+        if (m_aNodePtr != nullptr)
+        {
+            OUString oldValue(reinterpret_cast<char*>(m_aNodePtr->content), strlen(reinterpret_cast<char*>(m_aNodePtr->content)), RTL_TEXTENCODING_UTF8);
+            xmlNodeAddContent(m_aNodePtr, reinterpret_cast<const xmlChar*>(OUStringToOString(arg, RTL_TEXTENCODING_UTF8).getStr()));
+            OUString newValue(reinterpret_cast<char*>(m_aNodePtr->content), strlen(reinterpret_cast<char*>(m_aNodePtr->content)), RTL_TEXTENCODING_UTF8);
+
+            guard.clear(); // release mutex before calling event handlers
+            dispatchEvent_Impl(oldValue, newValue);
+        }
+    }
+
+    /**
+    Remove a range of 16-bit units from the node.
+    */
+    void SAL_CALL CCharacterData::deleteData(sal_Int32 offset, sal_Int32 count)
+    {
+        ::osl::ClearableMutexGuard guard(m_rMutex);
+
+        if (m_aNodePtr == nullptr)
+            return;
+
+        // get current data
+        std::shared_ptr<xmlChar const> const pContent(
+            xmlNodeGetContent(m_aNodePtr), xmlFree);
+        std::string_view aData(reinterpret_cast<char const*>(pContent.get()));
+        OUString tmp(OStringToOUString(aData, RTL_TEXTENCODING_UTF8));
+        if (offset > tmp.getLength() || offset < 0 || count < 0) {
+            DOMException e;
+            e.Code = DOMExceptionType_INDEX_SIZE_ERR;
+            throw e;
+        }
+        if ((offset+count) > tmp.getLength())
+            count = tmp.getLength() - offset;
+
+        OUString tmp2 = OUString::Concat(tmp.subView(0, offset)) + tmp.subView(offset+count);
+        OUString oldValue(reinterpret_cast<char*>(m_aNodePtr->content), strlen(reinterpret_cast<char*>(m_aNodePtr->content)), RTL_TEXTENCODING_UTF8);
+        xmlNodeSetContent(m_aNodePtr, reinterpret_cast<const xmlChar*>(OUStringToOString(tmp2, RTL_TEXTENCODING_UTF8).getStr()));
+        OUString newValue(reinterpret_cast<char*>(m_aNodePtr->content), strlen(reinterpret_cast<char*>(m_aNodePtr->content)), RTL_TEXTENCODING_UTF8);
+
+        guard.clear(); // release mutex before calling event handlers
+        dispatchEvent_Impl(oldValue, newValue);
+
+    }
+
+
+    /**
+    Return the character data of the node that implements this interface.
+    */
+    OUString SAL_CALL CCharacterData::getData()
+    {
+        ::osl::MutexGuard const g(m_rMutex);
+
+        OUString aData;
+        if (m_aNodePtr != nullptr)
+        {
+            OSL_ENSURE(m_aNodePtr->content, "character data node with NULL content, please inform lars.oppermann@sun.com!");
+            if (m_aNodePtr->content != nullptr)
+            {
+                aData = OUString(reinterpret_cast<char*>(m_aNodePtr->content), strlen(reinterpret_cast<char*>(m_aNodePtr->content)),  RTL_TEXTENCODING_UTF8);
+            }
+        }
+        return aData;
+    }
+
+    /**
+    The number of 16-bit units that are available through data and the
+    substringData method below.
+    */
+    sal_Int32 SAL_CALL CCharacterData::getLength()
+    {
+        ::osl::MutexGuard const g(m_rMutex);
+
+        sal_Int32 length = 0;
+        if (m_aNodePtr != nullptr)
+        {
+             OUString aData(reinterpret_cast<char*>(m_aNodePtr->content), strlen(reinterpret_cast<char*>(m_aNodePtr->content)),  RTL_TEXTENCODING_UTF8);
+             length = aData.getLength();
+        }
+        return length;
+    }
+
+    /**
+    Insert a string at the specified 16-bit unit offset.
+    */
+    void SAL_CALL CCharacterData::insertData(sal_Int32 offset, const OUString& arg)
+    {
+        ::osl::ClearableMutexGuard guard(m_rMutex);
+
+        if (m_aNodePtr == nullptr)
+            return;
+
+        // get current data
+        std::shared_ptr<xmlChar const> const pContent(
+            xmlNodeGetContent(m_aNodePtr), xmlFree);
+        std::string_view aData(reinterpret_cast<char const*>(pContent.get()));
+        OUString tmp(OStringToOUString(aData, RTL_TEXTENCODING_UTF8));
+        if (offset > tmp.getLength() || offset < 0) {
+            DOMException e;
+            e.Code = DOMExceptionType_INDEX_SIZE_ERR;
+            throw e;
+        }
+
+        OUString tmp2 = tmp.subView(0, offset) +
+            arg +
+            tmp.subView(offset);
+        OUString oldValue(reinterpret_cast<char*>(m_aNodePtr->content), strlen(reinterpret_cast<char*>(m_aNodePtr->content)), RTL_TEXTENCODING_UTF8);
+        xmlNodeSetContent(m_aNodePtr, reinterpret_cast<const xmlChar*>(OUStringToOString(tmp2, RTL_TEXTENCODING_UTF8).getStr()));
+        OUString newValue(reinterpret_cast<char*>(m_aNodePtr->content), strlen(reinterpret_cast<char*>(m_aNodePtr->content)), RTL_TEXTENCODING_UTF8);
+
+        guard.clear(); // release mutex before calling event handlers
+        dispatchEvent_Impl(oldValue, newValue);
+
+    }
+
+
+    /**
+    Replace the characters starting at the specified 16-bit unit offset
+    with the specified string.
+    */
+    void SAL_CALL CCharacterData::replaceData(sal_Int32 offset, sal_Int32 count, const OUString& arg)
+    {
+        ::osl::ClearableMutexGuard guard(m_rMutex);
+
+        if (m_aNodePtr == nullptr)
+            return;
+
+        // get current data
+        std::shared_ptr<xmlChar const> const pContent(
+            xmlNodeGetContent(m_aNodePtr), xmlFree);
+        std::string_view aData(reinterpret_cast<char const*>(pContent.get()));
+        OUString tmp(OStringToOUString(aData, RTL_TEXTENCODING_UTF8));
+        if (offset > tmp.getLength() || offset < 0 || count < 0){
+            DOMException e;
+            e.Code = DOMExceptionType_INDEX_SIZE_ERR;
+            throw e;
+        }
+        if ((offset+count) > tmp.getLength())
+            count = tmp.getLength() - offset;
+
+        OUString tmp2 = tmp.subView(0, offset) +
+            arg +
+            tmp.subView(offset+count);
+        OUString oldValue(reinterpret_cast<char*>(m_aNodePtr->content), strlen(reinterpret_cast<char*>(m_aNodePtr->content)), RTL_TEXTENCODING_UTF8);
+        xmlNodeSetContent(m_aNodePtr, reinterpret_cast<const xmlChar*>(OUStringToOString(tmp2, RTL_TEXTENCODING_UTF8).getStr()));
+        OUString newValue(reinterpret_cast<char*>(m_aNodePtr->content), strlen(reinterpret_cast<char*>(m_aNodePtr->content)), RTL_TEXTENCODING_UTF8);
+
+        guard.clear(); // release mutex before calling event handlers
+        dispatchEvent_Impl(oldValue, newValue);
+
+    }
+
+    /**
+    Set the character data of the node that implements this interface.
+    */
+    void SAL_CALL CCharacterData::setData(const OUString& data)
+    {
+        ::osl::ClearableMutexGuard guard(m_rMutex);
+
+        if (m_aNodePtr != nullptr)
+        {
+            OUString oldValue(reinterpret_cast<char*>(m_aNodePtr->content), strlen(reinterpret_cast<char*>(m_aNodePtr->content)), RTL_TEXTENCODING_UTF8);
+            xmlNodeSetContent(m_aNodePtr, reinterpret_cast<const xmlChar*>(OUStringToOString(data, RTL_TEXTENCODING_UTF8).getStr()));
+            OUString newValue(reinterpret_cast<char*>(m_aNodePtr->content), strlen(reinterpret_cast<char*>(m_aNodePtr->content)), RTL_TEXTENCODING_UTF8);
+
+            guard.clear(); // release mutex before calling event handlers
+            dispatchEvent_Impl(oldValue, newValue);
+        }
+    }
+
+    /**
+    Extracts a range of data from the node.
+    */
+    OUString SAL_CALL CCharacterData::subStringData(sal_Int32 offset, sal_Int32 count)
+    {
+        ::osl::MutexGuard const g(m_rMutex);
+
+        OUString aStr;
+        if (m_aNodePtr != nullptr)
+        {
+            // get current data
+            std::shared_ptr<xmlChar const> const pContent(
+                xmlNodeGetContent(m_aNodePtr), xmlFree);
+            std::string_view aData(reinterpret_cast<char const*>(pContent.get()));
+            OUString tmp(OStringToOUString(aData, RTL_TEXTENCODING_UTF8));
+            if (offset > tmp.getLength() || offset < 0 || count < 0) {
+                DOMException e;
+                e.Code = DOMExceptionType_INDEX_SIZE_ERR;
+                throw e;
+            }
+            aStr = tmp.copy(offset, count);
+        }
+        return aStr;
+    }
+
+
+} // namespace DOM
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/unoxml/source/dom/characterdata.hxx b/unoxml/source/dom/characterdata.hxx
new file mode 100644
index 0000000000..7728f65ef1
--- /dev/null
+++ b/unoxml/source/dom/characterdata.hxx
@@ -0,0 +1,201 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#pragma once
+
+#include <libxml/tree.h>
+
+#include <sal/types.h>
+
+#include <cppuhelper/implbase.hxx>
+
+#include <com/sun/star/uno/Reference.h>
+#include <com/sun/star/xml/dom/XNode.hpp>
+#include <com/sun/star/xml/dom/XCharacterData.hpp>
+
+#include <node.hxx>
+
+namespace DOM
+{
+    typedef ::cppu::ImplInheritanceHelper< CNode, css::xml::dom::XCharacterData >
+        CCharacterData_Base;
+
+    class CCharacterData
+        : public CCharacterData_Base
+    {
+
+    protected:
+        CCharacterData(CDocument const& rDocument, ::osl::Mutex const& rMutex,
+                css::xml::dom::NodeType const& reNodeType, xmlNodePtr const& rpNode);
+
+        void dispatchEvent_Impl(
+                OUString const& prevValue, OUString const& newValue);
+
+    public:
+        /**
+        Append the string to the end of the character data of the node.
+        */
+        virtual void SAL_CALL appendData(const OUString& arg) override;
+
+        /**
+        Remove a range of 16-bit units from the node.
+        */
+        virtual void SAL_CALL deleteData(sal_Int32 offset, sal_Int32 count) override;
+
+        /**
+        Return the character data of the node that implements this interface.
+        */
+        virtual OUString SAL_CALL getData() override;
+
+        /**
+        The number of 16-bit units that are available through data and the
+        substringData method below.
+        */
+        virtual sal_Int32 SAL_CALL getLength() override;
+
+        /**
+        Insert a string at the specified 16-bit unit offset.
+        */
+        virtual void SAL_CALL insertData(sal_Int32 offset, const OUString& arg) override;
+
+        /**
+        Replace the characters starting at the specified 16-bit unit offset
+        with the specified string.
+        */
+        virtual void SAL_CALL replaceData(sal_Int32 offset, sal_Int32 count, const OUString& arg) override;
+
+        /**
+        Set the character data of the node that implements this interface.
+        */
+        virtual void SAL_CALL setData(const OUString& data) override;
+
+        /**
+        Extracts a range of data from the node.
+        */
+        virtual OUString SAL_CALL subStringData(sal_Int32 offset, sal_Int32 count) override;
+
+        // --- delegation for XNode base.
+        virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL appendChild(const css::uno::Reference< css::xml::dom::XNode >& newChild) override
+        {
+            return CNode::appendChild(newChild);
+        }
+        virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL cloneNode(sal_Bool deep) override
+        {
+            return CNode::cloneNode(deep);
+        }
+        virtual css::uno::Reference< css::xml::dom::XNamedNodeMap > SAL_CALL getAttributes() override
+        {
+            return CNode::getAttributes();
+        }
+        virtual css::uno::Reference< css::xml::dom::XNodeList > SAL_CALL getChildNodes() override
+        {
+            return CNode::getChildNodes();
+        }
+        virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL getFirstChild() override
+        {
+            return CNode::getFirstChild();
+        }
+        virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL getLastChild() override
+        {
+            return CNode::getLastChild();
+        }
+        virtual OUString SAL_CALL getLocalName() override
+        {
+            return CNode::getLocalName();
+        }
+        virtual OUString SAL_CALL getNamespaceURI() override
+        {
+            return CNode::getNamespaceURI();
+        }
+        virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL getNextSibling() override
+        {
+            return CNode::getNextSibling();
+        }
+        virtual OUString SAL_CALL getNodeName() override
+        {
+            return CNode::getNodeName();
+        }
+        virtual css::xml::dom::NodeType SAL_CALL getNodeType() override
+        {
+            return CNode::getNodeType();
+        }
+        virtual OUString SAL_CALL getNodeValue() override
+        {
+            return getData();
+        }
+        virtual css::uno::Reference< css::xml::dom::XDocument > SAL_CALL getOwnerDocument() override
+        {
+            return CNode::getOwnerDocument();
+        }
+        virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL getParentNode() override
+        {
+            return CNode::getParentNode();
+        }
+        virtual OUString SAL_CALL getPrefix() override
+        {
+            return CNode::getPrefix();
+        }
+        virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL getPreviousSibling() override
+        {
+            return CNode::getPreviousSibling();
+        }
+        virtual sal_Bool SAL_CALL hasAttributes() override
+        {
+            return CNode::hasAttributes();
+        }
+        virtual sal_Bool SAL_CALL hasChildNodes() override
+        {
+            return CNode::hasChildNodes();
+        }
+        virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL insertBefore(
+                const css::uno::Reference< css::xml::dom::XNode >& newChild, const css::uno::Reference< css::xml::dom::XNode >& refChild) override
+        {
+            return CNode::insertBefore(newChild, refChild);
+        }
+        virtual sal_Bool SAL_CALL isSupported(const OUString& feature, const OUString& ver) override
+        {
+            return CNode::isSupported(feature, ver);
+        }
+        virtual void SAL_CALL normalize() override
+        {
+            CNode::normalize();
+        }
+        virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL removeChild(const css::uno::Reference< css::xml::dom::XNode >& oldChild) override
+        {
+            return CNode::removeChild(oldChild);
+        }
+        virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL replaceChild(
+                const css::uno::Reference< css::xml::dom::XNode >& newChild, const css::uno::Reference< css::xml::dom::XNode >& oldChild) override
+        {
+            return CNode::replaceChild(newChild, oldChild);
+        }
+        virtual void SAL_CALL setNodeValue(const OUString& nodeValue) override
+        {
+            return setData(nodeValue);
+        }
+        virtual void SAL_CALL setPrefix(const OUString& prefix) override
+        {
+            return CNode::setPrefix(prefix);
+        }
+
+
+    };
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/unoxml/source/dom/childlist.cxx b/unoxml/source/dom/childlist.cxx
new file mode 100644
index 0000000000..c147d8622d
--- /dev/null
+++ b/unoxml/source/dom/childlist.cxx
@@ -0,0 +1,88 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include "childlist.hxx"
+
+#include <libxml/tree.h>
+
+#include <node.hxx>
+#include <utility>
+#include "document.hxx"
+
+using namespace css::uno;
+using namespace css::xml::dom;
+
+namespace DOM
+{
+    CChildList::CChildList(::rtl::Reference<CNode> pBase,
+                ::osl::Mutex & rMutex)
+        : m_pNode(std::move(pBase))
+        , m_rMutex(rMutex)
+    {
+    }
+
+    /**
+    The number of nodes in the list.
+    */
+    sal_Int32 SAL_CALL CChildList::getLength()
+    {
+        ::osl::MutexGuard const g(m_rMutex);
+
+        sal_Int32 length = 0;
+        if (m_pNode != nullptr)
+        {
+            xmlNodePtr cur = m_pNode->GetNodePtr();
+            if (nullptr != cur) {
+                cur = cur->children;
+            }
+            while (cur != nullptr)
+            {
+                length++;
+                cur = cur->next;
+            }
+        }
+        return length;
+
+    }
+    /**
+    Returns the indexth item in the collection.
+    */
+    Reference< XNode > SAL_CALL CChildList::item(sal_Int32 index)
+    {
+        ::osl::MutexGuard const g(m_rMutex);
+
+        if (m_pNode != nullptr)
+        {
+            xmlNodePtr cur = m_pNode->GetNodePtr();
+            if (nullptr != cur) {
+                cur = cur->children;
+            }
+            while (cur != nullptr)
+            {
+                if (index-- == 0) {
+                    return m_pNode->GetOwnerDocument().GetCNode(cur);
+                }
+                cur = cur->next;
+            }
+        }
+        return nullptr;
+    }
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/unoxml/source/dom/childlist.hxx b/unoxml/source/dom/childlist.hxx
new file mode 100644
index 0000000000..89fd0ea9bb
--- /dev/null
+++ b/unoxml/source/dom/childlist.hxx
@@ -0,0 +1,59 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#pragma once
+
+#include <sal/types.h>
+#include <rtl/ref.hxx>
+
+#include <com/sun/star/uno/Reference.h>
+#include <com/sun/star/xml/dom/XNode.hpp>
+#include <com/sun/star/xml/dom/XNodeList.hpp>
+
+#include <cppuhelper/implbase.hxx>
+
+#include <node.hxx>
+
+namespace DOM
+{
+    class CNode;
+
+    class CChildList
+        : public cppu::WeakImplHelper< css::xml::dom::XNodeList >
+    {
+    private:
+        ::rtl::Reference<CNode> const m_pNode;
+        ::osl::Mutex & m_rMutex;
+
+    public:
+        CChildList(::rtl::Reference<CNode> pBase,
+                ::osl::Mutex & rMutex);
+
+        /**
+        The number of nodes in the list.
+        */
+        virtual sal_Int32 SAL_CALL getLength() override;
+        /**
+        Returns the indexth item in the collection.
+        */
+        virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL item(sal_Int32 index) override;
+    };
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/unoxml/source/dom/comment.cxx b/unoxml/source/dom/comment.cxx
new file mode 100644
index 0000000000..30bcb30aa0
--- /dev/null
+++ b/unoxml/source/dom/comment.cxx
@@ -0,0 +1,56 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include "comment.hxx"
+
+#include <com/sun/star/xml/sax/XExtendedDocumentHandler.hpp>
+
+using namespace css::uno;
+using namespace css::xml::dom;
+using namespace css::xml::sax;
+
+namespace DOM
+{
+    CComment::CComment(CDocument const& rDocument, ::osl::Mutex const& rMutex,
+            xmlNodePtr const pNode)
+        : CComment_Base(rDocument, rMutex, NodeType_COMMENT_NODE, pNode)
+    {
+    }
+
+    void CComment::saxify(
+            const Reference< XDocumentHandler >& i_xHandler) {
+        if (!i_xHandler.is()) throw RuntimeException();
+        Reference< XExtendedDocumentHandler > xExtended(i_xHandler, UNO_QUERY);
+        if (xExtended.is()) {
+            xExtended->comment(getData());
+        }
+    }
+
+    OUString SAL_CALL CComment::getNodeName()
+    {
+        return "#comment";
+    }
+
+    OUString SAL_CALL CComment::getNodeValue()
+    {
+        return CCharacterData::getData();
+    }
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/unoxml/source/dom/comment.hxx b/unoxml/source/dom/comment.hxx
new file mode 100644
index 0000000000..94b8f1f580
--- /dev/null
+++ b/unoxml/source/dom/comment.hxx
@@ -0,0 +1,183 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#pragma once
+
+#include <com/sun/star/uno/Reference.h>
+#include <com/sun/star/xml/dom/XComment.hpp>
+
+#include <cppuhelper/implbase.hxx>
+#include "characterdata.hxx"
+
+namespace DOM
+{
+    typedef ::cppu::ImplInheritanceHelper< CCharacterData, css::xml::dom::XComment >
+        CComment_Base;
+
+    class CComment
+        : public CComment_Base
+    {
+        friend class CDocument;
+
+        CComment(CDocument const& rDocument, ::osl::Mutex const& rMutex,
+                xmlNodePtr const pNode);
+
+    public:
+
+        virtual void saxify(const css::uno::Reference< css::xml::sax::XDocumentHandler >& i_xHandler) override;
+
+         // --- delegations for XCharacterData
+        virtual void SAL_CALL appendData(const OUString& arg) override
+        {
+            CCharacterData::appendData(arg);
+        }
+        virtual void SAL_CALL deleteData(sal_Int32 offset, sal_Int32 count) override
+        {
+            CCharacterData::deleteData(offset, count);
+        }
+        virtual OUString SAL_CALL getData() override
+        {
+            return CCharacterData::getData();
+        }
+        virtual sal_Int32 SAL_CALL getLength() override
+        {
+            return CCharacterData::getLength();
+        }
+        virtual void SAL_CALL insertData(sal_Int32 offset, const OUString& arg) override
+        {
+            CCharacterData::insertData(offset, arg);
+        }
+        virtual void SAL_CALL replaceData(sal_Int32 offset, sal_Int32 count, const OUString& arg) override
+        {
+            CCharacterData::replaceData(offset, count, arg);
+        }
+        virtual void SAL_CALL setData(const OUString& data) override
+        {
+            CCharacterData::setData(data);
+        }
+        virtual OUString SAL_CALL subStringData(sal_Int32 offset, sal_Int32 count) override
+        {
+            return CCharacterData::subStringData(offset, count);
+        }
+
+
+         // --- overrides for XNode base
+        virtual OUString SAL_CALL getNodeName() override;
+        virtual OUString SAL_CALL getNodeValue() override;
+
+    // --- delegation for XNode base.
+    virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL appendChild(const css::uno::Reference< css::xml::dom::XNode >& newChild) override
+    {
+        return CCharacterData::appendChild(newChild);
+    }
+    virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL cloneNode(sal_Bool deep) override
+    {
+        return CCharacterData::cloneNode(deep);
+    }
+    virtual css::uno::Reference< css::xml::dom::XNamedNodeMap > SAL_CALL getAttributes() override
+    {
+        return CCharacterData::getAttributes();
+    }
+    virtual css::uno::Reference< css::xml::dom::XNodeList > SAL_CALL getChildNodes() override
+    {
+        return CCharacterData::getChildNodes();
+    }
+    virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL getFirstChild() override
+    {
+        return CCharacterData::getFirstChild();
+    }
+    virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL getLastChild() override
+    {
+        return CCharacterData::getLastChild();
+    }
+    virtual OUString SAL_CALL getLocalName() override
+    {
+        return CCharacterData::getLocalName();
+    }
+    virtual OUString SAL_CALL getNamespaceURI() override
+    {
+        return CCharacterData::getNamespaceURI();
+    }
+    virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL getNextSibling() override
+    {
+        return CCharacterData::getNextSibling();
+    }
+    virtual css::xml::dom::NodeType SAL_CALL getNodeType() override
+    {
+        return CCharacterData::getNodeType();
+    }
+    virtual css::uno::Reference< css::xml::dom::XDocument > SAL_CALL getOwnerDocument() override
+    {
+        return CCharacterData::getOwnerDocument();
+    }
+    virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL getParentNode() override
+    {
+        return CCharacterData::getParentNode();
+    }
+    virtual OUString SAL_CALL getPrefix() override
+    {
+        return CCharacterData::getPrefix();
+    }
+    virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL getPreviousSibling() override
+    {
+        return CCharacterData::getPreviousSibling();
+    }
+    virtual sal_Bool SAL_CALL hasAttributes() override
+    {
+        return CCharacterData::hasAttributes();
+    }
+    virtual sal_Bool SAL_CALL hasChildNodes() override
+    {
+        return CCharacterData::hasChildNodes();
+    }
+    virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL insertBefore(
+            const css::uno::Reference< css::xml::dom::XNode >& newChild, const css::uno::Reference< css::xml::dom::XNode >& refChild) override
+    {
+        return CCharacterData::insertBefore(newChild, refChild);
+    }
+    virtual sal_Bool SAL_CALL isSupported(const OUString& feature, const OUString& ver) override
+    {
+        return CCharacterData::isSupported(feature, ver);
+    }
+    virtual void SAL_CALL normalize() override
+    {
+        CCharacterData::normalize();
+    }
+    virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL removeChild(const css::uno::Reference< css::xml::dom::XNode >& oldChild) override
+    {
+        return CCharacterData::removeChild(oldChild);
+    }
+    virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL replaceChild(
+            const css::uno::Reference< css::xml::dom::XNode >& newChild, const css::uno::Reference< css::xml::dom::XNode >& oldChild) override
+    {
+        return CCharacterData::replaceChild(newChild, oldChild);
+    }
+    virtual void SAL_CALL setNodeValue(const OUString& nodeValue) override
+    {
+        return CCharacterData::setNodeValue(nodeValue);
+    }
+    virtual void SAL_CALL setPrefix(const OUString& prefix) override
+    {
+        return CCharacterData::setPrefix(prefix);
+    }
+
+    };
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/unoxml/source/dom/document.cxx b/unoxml/source/dom/document.cxx
new file mode 100644
index 0000000000..0825fc2cd7
--- /dev/null
+++ b/unoxml/source/dom/document.cxx
@@ -0,0 +1,1028 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <com/sun/star/uno/Sequence.h>
+
+#include "document.hxx"
+#include "attr.hxx"
+#include "element.hxx"
+#include "cdatasection.hxx"
+#include "documentfragment.hxx"
+#include "text.hxx"
+#include "comment.hxx"
+#include "processinginstruction.hxx"
+#include "entityreference.hxx"
+#include "documenttype.hxx"
+#include "elementlist.hxx"
+#include "domimplementation.hxx"
+#include "entity.hxx"
+#include "notation.hxx"
+
+#include <event.hxx>
+#include <mutationevent.hxx>
+#include <uievent.hxx>
+#include <mouseevent.hxx>
+#include <eventdispatcher.hxx>
+
+#include <string.h>
+#include <libxml/xmlIO.h>
+
+#include <osl/diagnose.h>
+
+#include <com/sun/star/xml/sax/FastToken.hpp>
+
+using namespace css;
+using namespace css::io;
+using namespace css::uno;
+using namespace css::xml::dom;
+using namespace css::xml::dom::events;
+using namespace css::xml::sax;
+
+namespace DOM
+{
+    static xmlNodePtr lcl_getDocumentType(xmlDocPtr const i_pDocument)
+    {
+        // find the doc type
+        xmlNodePtr cur = i_pDocument->children;
+        while (cur != nullptr)
+        {
+            if ((cur->type == XML_DOCUMENT_TYPE_NODE) ||
+                (cur->type == XML_DTD_NODE)) {
+                    return cur;
+            }
+        }
+        return nullptr;
+    }
+
+    /// get the pointer to the root element node of the document
+    static xmlNodePtr lcl_getDocumentRootPtr(xmlDocPtr const i_pDocument)
+    {
+        // find the document element
+        xmlNodePtr cur = i_pDocument->children;
+        while (cur != nullptr)
+        {
+            if (cur->type == XML_ELEMENT_NODE)
+                break;
+            cur = cur->next;
+        }
+        return cur;
+    }
+
+    CDocument::CDocument(xmlDocPtr const pDoc)
+        : CDocument_Base(*this, m_Mutex,
+                NodeType_DOCUMENT_NODE, reinterpret_cast<xmlNodePtr>(pDoc))
+        , m_aDocPtr(pDoc)
+        , m_pEventDispatcher(new events::CEventDispatcher)
+    {
+    }
+
+    ::rtl::Reference<CDocument> CDocument::CreateCDocument(xmlDocPtr const pDoc)
+    {
+        ::rtl::Reference<CDocument> const xDoc(new CDocument(pDoc));
+        // add the doc itself to its nodemap!
+        xDoc->m_NodeMap.emplace(
+                reinterpret_cast<xmlNodePtr>(pDoc),
+                ::std::make_pair(
+                    WeakReference<XNode>(static_cast<XDocument*>(xDoc.get())),
+                    xDoc.get()));
+        return xDoc;
+    }
+
+    CDocument::~CDocument()
+    {
+        ::osl::MutexGuard const g(m_Mutex);
+#ifdef DBG_UTIL
+        // node map must be empty now, otherwise CDocument must not die!
+        for (const auto& rEntry : m_NodeMap)
+        {
+            Reference<XNode> const xNode(rEntry.second.first);
+            OSL_ENSURE(!xNode.is(),
+            "CDocument::~CDocument(): ERROR: live node in document node map!");
+        }
+#endif
+        xmlFreeDoc(m_aDocPtr);
+    }
+
+
+    events::CEventDispatcher & CDocument::GetEventDispatcher()
+    {
+        return *m_pEventDispatcher;
+    }
+
+    ::rtl::Reference< CElement > CDocument::GetDocumentElement()
+    {
+        xmlNodePtr const pNode = lcl_getDocumentRootPtr(m_aDocPtr);
+        ::rtl::Reference< CElement > const xRet(
+            dynamic_cast<CElement*>(GetCNode(pNode).get()));
+        return xRet;
+    }
+
+    void
+    CDocument::RemoveCNode(xmlNodePtr const pNode, CNode const*const pCNode)
+    {
+        nodemap_t::iterator const i = m_NodeMap.find(pNode);
+        if (i == m_NodeMap.end())
+            return;
+
+        // #i113681# consider this scenario:
+        // T1 calls ~CNode
+        // T2 calls getCNode:    lookup will find i->second->first invalid
+        //                       so a new CNode is created and inserted
+        // T1 calls removeCNode: i->second->second now points to a
+        //                       different CNode instance!
+
+        // check that the CNode is the right one
+        CNode *const pCurrent = i->second.second;
+        if (pCurrent == pCNode) {
+            m_NodeMap.erase(i);
+        }
+    }
+
+    /** NB: this is the CNode factory.
+        it is the only place where CNodes may be instantiated.
+        all CNodes must be registered at the m_NodeMap.
+     */
+    ::rtl::Reference<CNode>
+    CDocument::GetCNode(xmlNodePtr const pNode, bool const bCreate)
+    {
+        if (nullptr == pNode) {
+            return nullptr;
+        }
+        //check whether there is already an instance for this node
+        nodemap_t::const_iterator const i = m_NodeMap.find(pNode);
+        if (i != m_NodeMap.end()) {
+            // #i113681# check that the CNode is still alive
+            uno::Reference<XNode> const xNode(i->second.first);
+            if (xNode.is())
+            {
+                ::rtl::Reference<CNode> ret(i->second.second);
+                OSL_ASSERT(ret.is());
+                return ret;
+            }
+        }
+
+        if (!bCreate) { return nullptr; }
+
+        // there is not yet an instance wrapping this node,
+        // create it and store it in the map
+
+        ::rtl::Reference<CNode> pCNode;
+        switch (pNode->type)
+        {
+            case XML_ELEMENT_NODE:
+                // m_aNodeType = NodeType::ELEMENT_NODE;
+                pCNode = new CElement(*this, m_Mutex, pNode);
+            break;
+            case XML_TEXT_NODE:
+                // m_aNodeType = NodeType::TEXT_NODE;
+                pCNode = new CText(*this, m_Mutex, pNode);
+            break;
+            case XML_CDATA_SECTION_NODE:
+                // m_aNodeType = NodeType::CDATA_SECTION_NODE;
+                pCNode = new CCDATASection(*this, m_Mutex, pNode);
+            break;
+            case XML_ENTITY_REF_NODE:
+                // m_aNodeType = NodeType::ENTITY_REFERENCE_NODE;
+                pCNode = new CEntityReference(*this, m_Mutex, pNode);
+            break;
+            case XML_ENTITY_NODE:
+                // m_aNodeType = NodeType::ENTITY_NODE;
+                pCNode = new CEntity(*this, m_Mutex, reinterpret_cast<xmlEntityPtr>(pNode));
+            break;
+            case XML_PI_NODE:
+                // m_aNodeType = NodeType::PROCESSING_INSTRUCTION_NODE;
+                pCNode = new CProcessingInstruction(*this, m_Mutex, pNode);
+            break;
+            case XML_COMMENT_NODE:
+                // m_aNodeType = NodeType::COMMENT_NODE;
+                pCNode = new CComment(*this, m_Mutex, pNode);
+            break;
+            case XML_DOCUMENT_NODE:
+                // m_aNodeType = NodeType::DOCUMENT_NODE;
+                OSL_ENSURE(false, "CDocument::GetCNode is not supposed to"
+                        " create a CDocument!!!");
+                pCNode = new CDocument(reinterpret_cast<xmlDocPtr>(pNode));
+            break;
+            case XML_DOCUMENT_TYPE_NODE:
+            case XML_DTD_NODE:
+                // m_aNodeType = NodeType::DOCUMENT_TYPE_NODE;
+                pCNode = new CDocumentType(*this, m_Mutex, reinterpret_cast<xmlDtdPtr>(pNode));
+            break;
+            case XML_DOCUMENT_FRAG_NODE:
+                // m_aNodeType = NodeType::DOCUMENT_FRAGMENT_NODE;
+                pCNode = new CDocumentFragment(*this, m_Mutex, pNode);
+            break;
+            case XML_NOTATION_NODE:
+                // m_aNodeType = NodeType::NOTATION_NODE;
+                pCNode = new CNotation(*this, m_Mutex, reinterpret_cast<xmlNotationPtr>(pNode));
+            break;
+            case XML_ATTRIBUTE_NODE:
+                // m_aNodeType = NodeType::ATTRIBUTE_NODE;
+                pCNode = new CAttr(*this, m_Mutex, reinterpret_cast<xmlAttrPtr>(pNode));
+            break;
+            // unsupported node types
+            case XML_HTML_DOCUMENT_NODE:
+            case XML_ELEMENT_DECL:
+            case XML_ATTRIBUTE_DECL:
+            case XML_ENTITY_DECL:
+            case XML_NAMESPACE_DECL:
+            default:
+            break;
+        }
+
+        if (pCNode != nullptr) {
+            bool const bInserted = m_NodeMap.emplace(
+                        pNode,
+                        ::std::make_pair(WeakReference<XNode>(pCNode), pCNode.get())
+                ).second;
+            OSL_ASSERT(bInserted);
+            if (!bInserted) {
+                // if insertion failed, delete new instance and return null
+                return nullptr;
+            }
+        }
+
+        OSL_ENSURE(pCNode.is(), "no node produced during CDocument::GetCNode!");
+        return pCNode;
+    }
+
+
+    CDocument & CDocument::GetOwnerDocument()
+    {
+        return *this;
+    }
+
+    void CDocument::saxify(const Reference< XDocumentHandler >& i_xHandler)
+    {
+        i_xHandler->startDocument();
+        for (xmlNodePtr pChild = m_aNodePtr->children;
+                        pChild != nullptr; pChild = pChild->next) {
+            ::rtl::Reference<CNode> const pNode = GetCNode(pChild);
+            OSL_ENSURE(pNode != nullptr, "CNode::get returned 0");
+            pNode->saxify(i_xHandler);
+        }
+        i_xHandler->endDocument();
+    }
+
+    void CDocument::fastSaxify( Context& rContext )
+    {
+        rContext.mxDocHandler->startDocument();
+        for (xmlNodePtr pChild = m_aNodePtr->children;
+                        pChild != nullptr; pChild = pChild->next) {
+            ::rtl::Reference<CNode> const pNode = GetCNode(pChild);
+            OSL_ENSURE(pNode != nullptr, "CNode::get returned 0");
+            pNode->fastSaxify(rContext);
+        }
+        rContext.mxDocHandler->endDocument();
+    }
+
+    bool CDocument::IsChildTypeAllowed(NodeType const nodeType, NodeType const*const pReplacedNodeType)
+    {
+        switch (nodeType) {
+            case NodeType_PROCESSING_INSTRUCTION_NODE:
+            case NodeType_COMMENT_NODE:
+                return true;
+            case NodeType_ELEMENT_NODE:
+                 // there may be only one!
+                return (pReplacedNodeType && *pReplacedNodeType == nodeType)
+                    || nullptr == lcl_getDocumentRootPtr(m_aDocPtr);
+            case NodeType_DOCUMENT_TYPE_NODE:
+                 // there may be only one!
+                return (pReplacedNodeType && *pReplacedNodeType == nodeType)
+                    || nullptr == lcl_getDocumentType(m_aDocPtr);
+            default:
+                return false;
+        }
+    }
+
+
+    void SAL_CALL CDocument::addListener(const Reference< XStreamListener >& aListener )
+    {
+        ::osl::MutexGuard const g(m_Mutex);
+
+        m_streamListeners.insert(aListener);
+    }
+
+    void SAL_CALL CDocument::removeListener(const Reference< XStreamListener >& aListener )
+    {
+        ::osl::MutexGuard const g(m_Mutex);
+
+        m_streamListeners.erase(aListener);
+    }
+
+    namespace {
+
+    // IO context functions for libxml2 interaction
+    struct IOContext {
+        Reference< XOutputStream > stream;
+        bool allowClose;
+    };
+
+    }
+
+    extern "C" {
+    // write callback
+    // int xmlOutputWriteCallback (void * context, const char * buffer, int len)
+    static int writeCallback(void *context, const char* buffer, int len){
+        // create a sequence and write it to the stream
+        IOContext *pContext = static_cast<IOContext*>(context);
+        Sequence<sal_Int8> bs(reinterpret_cast<const sal_Int8*>(buffer), len);
+        pContext->stream->writeBytes(bs);
+        return len;
+    }
+
+    // close callback
+    //int xmlOutputCloseCallback (void * context)
+    static int closeCallback(void *context)
+    {
+        IOContext *pContext = static_cast<IOContext*>(context);
+        if (pContext->allowClose) {
+            pContext->stream->closeOutput();
+        }
+        return 0;
+    }
+    } // extern "C"
+
+    void SAL_CALL CDocument::start()
+    {
+        listenerlist_t streamListeners;
+        {
+            ::osl::MutexGuard const g(m_Mutex);
+
+            if (! m_rOutputStream.is()) { throw RuntimeException(); }
+            streamListeners = m_streamListeners;
+        }
+
+        // notify listeners about start
+        for (const Reference< XStreamListener >& aListener : streamListeners) {
+            aListener->started();
+        }
+
+        {
+            ::osl::MutexGuard const g(m_Mutex);
+
+            // check again! could have been reset...
+            if (! m_rOutputStream.is()) { throw RuntimeException(); }
+
+            // setup libxml IO and write data to output stream
+            IOContext ioctx = {m_rOutputStream, false};
+            xmlOutputBufferPtr pOut = xmlOutputBufferCreateIO(
+                writeCallback, closeCallback, &ioctx, nullptr);
+            xmlSaveFileTo(pOut, m_aNodePtr->doc, nullptr);
+        }
+
+        // call listeners
+        for (const Reference< XStreamListener >& aListener : streamListeners) {
+            aListener->closed();
+        }
+    }
+
+    void SAL_CALL CDocument::terminate()
+    {
+        // not supported
+    }
+
+    void SAL_CALL CDocument::setOutputStream( const Reference< XOutputStream >& aStream )
+    {
+        ::osl::MutexGuard const g(m_Mutex);
+
+        m_rOutputStream = aStream;
+    }
+
+    Reference< XOutputStream > SAL_CALL  CDocument::getOutputStream()
+    {
+        ::osl::MutexGuard const g(m_Mutex);
+
+        return m_rOutputStream;
+    }
+
+    // Creates an Attr of the given name.
+    Reference< XAttr > SAL_CALL CDocument::createAttribute(const OUString& name)
+    {
+        ::osl::MutexGuard const g(m_Mutex);
+
+        OString o1 = OUStringToOString(name, RTL_TEXTENCODING_UTF8);
+        xmlChar const *pName = reinterpret_cast<xmlChar const *>(o1.getStr());
+        xmlAttrPtr const pAttr = xmlNewDocProp(m_aDocPtr, pName, nullptr);
+        ::rtl::Reference< CAttr > const pCAttr(
+            dynamic_cast< CAttr* >(GetCNode(
+                    reinterpret_cast<xmlNodePtr>(pAttr)).get()));
+        if (!pCAttr.is()) { throw RuntimeException(); }
+        pCAttr->m_bUnlinked = true;
+        return pCAttr;
+    };
+
+    // Creates an attribute of the given qualified name and namespace URI.
+    Reference< XAttr > SAL_CALL CDocument::createAttributeNS(
+            const OUString& ns, const OUString& qname)
+    {
+        ::osl::MutexGuard const g(m_Mutex);
+
+        // libxml does not allow a NS definition to be attached to an
+        // attribute node - which is a good thing, since namespaces are
+        // only defined as parts of element nodes
+        // thus the namespace data is stored in CAttr::m_pNamespace
+        sal_Int32 i = qname.indexOf(':');
+        OString oPrefix, oName, oUri;
+        if (i != -1)
+        {
+            oPrefix = OUStringToOString(qname.subView(0, i), RTL_TEXTENCODING_UTF8);
+            oName = OUStringToOString(qname.subView(i+1), RTL_TEXTENCODING_UTF8);
+        }
+        else
+        {
+            oName = OUStringToOString(qname, RTL_TEXTENCODING_UTF8);
+        }
+        oUri = OUStringToOString(ns, RTL_TEXTENCODING_UTF8);
+        xmlAttrPtr const pAttr = xmlNewDocProp(m_aDocPtr,
+                reinterpret_cast<xmlChar const*>(oName.getStr()), nullptr);
+        ::rtl::Reference< CAttr > const pCAttr(
+            dynamic_cast< CAttr* >(GetCNode(
+                    reinterpret_cast<xmlNodePtr>(pAttr)).get()));
+        if (!pCAttr.is()) { throw RuntimeException(); }
+        // store the namespace data!
+        pCAttr->m_oNamespace.emplace( oUri, oPrefix );
+        pCAttr->m_bUnlinked = true;
+
+        return pCAttr;
+    };
+
+    // Creates a CDATASection node whose value is the specified string.
+    Reference< XCDATASection > SAL_CALL CDocument::createCDATASection(const OUString& data)
+    {
+        ::osl::MutexGuard const g(m_Mutex);
+
+        OString const oData(
+                OUStringToOString(data, RTL_TEXTENCODING_UTF8));
+        xmlChar const*const pData =
+            reinterpret_cast<xmlChar const*>(oData.getStr());
+        xmlNodePtr const pText =
+            xmlNewCDataBlock(m_aDocPtr, pData, oData.getLength());
+        Reference< XCDATASection > const xRet(
+            static_cast< XNode* >(GetCNode(pText).get()),
+            UNO_QUERY_THROW);
+        return xRet;
+    }
+
+    // Creates a Comment node given the specified string.
+    Reference< XComment > SAL_CALL CDocument::createComment(const OUString& data)
+    {
+        ::osl::MutexGuard const g(m_Mutex);
+
+        OString o1 = OUStringToOString(data, RTL_TEXTENCODING_UTF8);
+        xmlChar const *pData = reinterpret_cast<xmlChar const *>(o1.getStr());
+        xmlNodePtr pComment = xmlNewDocComment(m_aDocPtr, pData);
+        Reference< XComment > const xRet(
+            static_cast< XNode* >(GetCNode(pComment).get()),
+            UNO_QUERY_THROW);
+        return xRet;
+    }
+
+    //Creates an empty DocumentFragment object.
+    Reference< XDocumentFragment > SAL_CALL CDocument::createDocumentFragment()
+    {
+        ::osl::MutexGuard const g(m_Mutex);
+
+        xmlNodePtr pFrag = xmlNewDocFragment(m_aDocPtr);
+        Reference< XDocumentFragment > const xRet(
+            static_cast< XNode* >(GetCNode(pFrag).get()),
+            UNO_QUERY_THROW);
+        return xRet;
+    }
+
+    // Creates an element of the type specified.
+    Reference< XElement > SAL_CALL CDocument::createElement(const OUString& tagName)
+    {
+        ::osl::MutexGuard const g(m_Mutex);
+
+        OString o1 = OUStringToOString(tagName, RTL_TEXTENCODING_UTF8);
+        xmlChar const *pName = reinterpret_cast<xmlChar const *>(o1.getStr());
+        xmlNodePtr const pNode = xmlNewDocNode(m_aDocPtr, nullptr, pName, nullptr);
+        Reference< XElement > const xRet(
+            static_cast< XNode* >(GetCNode(pNode).get()),
+            UNO_QUERY_THROW);
+        return xRet;
+    }
+
+    // Creates an element of the given qualified name and namespace URI.
+    Reference< XElement > SAL_CALL CDocument::createElementNS(
+            const OUString& ns, const OUString& qname)
+    {
+        ::osl::MutexGuard const g(m_Mutex);
+
+        sal_Int32 i = qname.indexOf(':');
+        if (ns.isEmpty()) throw RuntimeException();
+        xmlChar const *pPrefix;
+        xmlChar const *pName;
+        OString o1, o2, o3;
+        if ( i != -1) {
+            o1 = OUStringToOString(qname.subView(0, i), RTL_TEXTENCODING_UTF8);
+            pPrefix = reinterpret_cast<xmlChar const *>(o1.getStr());
+            o2 = OUStringToOString(qname.subView(i+1), RTL_TEXTENCODING_UTF8);
+            pName = reinterpret_cast<xmlChar const *>(o2.getStr());
+        } else {
+            // default prefix
+            pPrefix = reinterpret_cast<xmlChar const *>("");
+            o2 = OUStringToOString(qname, RTL_TEXTENCODING_UTF8);
+            pName = reinterpret_cast<xmlChar const *>(o2.getStr());
+        }
+        o3 = OUStringToOString(ns, RTL_TEXTENCODING_UTF8);
+        xmlChar const *pUri = reinterpret_cast<xmlChar const *>(o3.getStr());
+
+        // xmlNsPtr aNsPtr = xmlNewReconciledNs?
+        // xmlNsPtr aNsPtr = xmlNewGlobalNs?
+        xmlNodePtr const pNode = xmlNewDocNode(m_aDocPtr, nullptr, pName, nullptr);
+        xmlNsPtr const pNs = xmlNewNs(pNode, pUri, pPrefix);
+        xmlSetNs(pNode, pNs);
+        Reference< XElement > const xRet(
+            static_cast< XNode* >(GetCNode(pNode).get()),
+            UNO_QUERY_THROW);
+        return xRet;
+    }
+
+    //Creates an EntityReference object.
+    Reference< XEntityReference > SAL_CALL CDocument::createEntityReference(const OUString& name)
+    {
+        ::osl::MutexGuard const g(m_Mutex);
+
+        OString o1 = OUStringToOString(name, RTL_TEXTENCODING_UTF8);
+        xmlChar const *pName = reinterpret_cast<xmlChar const *>(o1.getStr());
+        xmlNodePtr const pNode = xmlNewReference(m_aDocPtr, pName);
+        Reference< XEntityReference > const xRet(
+            static_cast< XNode* >(GetCNode(pNode).get()),
+            UNO_QUERY_THROW);
+        return xRet;
+    }
+
+    // Creates a ProcessingInstruction node given the specified name and
+    // data strings.
+    Reference< XProcessingInstruction > SAL_CALL CDocument::createProcessingInstruction(
+            const OUString& target, const OUString& data)
+    {
+        ::osl::MutexGuard const g(m_Mutex);
+
+        OString o1 = OUStringToOString(target, RTL_TEXTENCODING_UTF8);
+        xmlChar const *pTarget = reinterpret_cast<xmlChar const *>(o1.getStr());
+        OString o2 = OUStringToOString(data, RTL_TEXTENCODING_UTF8);
+        xmlChar const *pData = reinterpret_cast<xmlChar const *>(o2.getStr());
+        xmlNodePtr const pNode = xmlNewDocPI(m_aDocPtr, pTarget, pData);
+        pNode->doc = m_aDocPtr;
+        Reference< XProcessingInstruction > const xRet(
+            static_cast< XNode* >(GetCNode(pNode).get()),
+            UNO_QUERY_THROW);
+        return xRet;
+    }
+
+    // Creates a Text node given the specified string.
+    Reference< XText > SAL_CALL CDocument::createTextNode(const OUString& data)
+    {
+        ::osl::MutexGuard const g(m_Mutex);
+
+        OString o1 = OUStringToOString(data, RTL_TEXTENCODING_UTF8);
+        xmlChar const *pData = reinterpret_cast<xmlChar const *>(o1.getStr());
+        xmlNodePtr const pNode = xmlNewDocText(m_aDocPtr, pData);
+        Reference< XText > const xRet(
+            static_cast< XNode* >(GetCNode(pNode).get()),
+            UNO_QUERY_THROW);
+        return xRet;
+    }
+
+    // The Document Type Declaration (see DocumentType) associated with this
+    // document.
+    Reference< XDocumentType > SAL_CALL CDocument::getDoctype()
+    {
+        ::osl::MutexGuard const g(m_Mutex);
+
+        xmlNodePtr const pDocType(lcl_getDocumentType(m_aDocPtr));
+        Reference< XDocumentType > const xRet(
+            static_cast< XNode* >(GetCNode(pDocType).get()),
+            UNO_QUERY);
+        return xRet;
+    }
+
+    // This is a convenience attribute that allows direct access to the child
+    // node that is the root element of the document.
+    Reference< XElement > SAL_CALL CDocument::getDocumentElement()
+    {
+        ::osl::MutexGuard const g(m_Mutex);
+
+        xmlNodePtr const pNode = lcl_getDocumentRootPtr(m_aDocPtr);
+        if (!pNode) { return nullptr; }
+        Reference< XElement > const xRet(
+            static_cast< XNode* >(GetCNode(pNode).get()),
+            UNO_QUERY);
+        return xRet;
+    }
+
+    static xmlNodePtr
+    lcl_search_element_by_id(const xmlNodePtr cur, const xmlChar* id)
+    {
+        if (cur == nullptr)
+            return nullptr;
+        // look in current node
+        if (cur->type == XML_ELEMENT_NODE)
+        {
+            xmlAttrPtr a = cur->properties;
+            while (a != nullptr)
+            {
+                if (a->atype == XML_ATTRIBUTE_ID) {
+                    if (strcmp(reinterpret_cast<char*>(a->children->content), reinterpret_cast<char const *>(id)) == 0)
+                        return cur;
+                }
+                a = a->next;
+            }
+        }
+        // look in children
+        xmlNodePtr result = lcl_search_element_by_id(cur->children, id);
+        if (result != nullptr)
+            return result;
+        result = lcl_search_element_by_id(cur->next, id);
+        return result;
+    }
+
+    // Returns the Element whose ID is given by elementId.
+    Reference< XElement > SAL_CALL
+    CDocument::getElementById(const OUString& elementId)
+    {
+        ::osl::MutexGuard const g(m_Mutex);
+
+        // search the tree for an element with the given ID
+        OString o1 = OUStringToOString(elementId, RTL_TEXTENCODING_UTF8);
+        xmlChar const *pId = reinterpret_cast<xmlChar const *>(o1.getStr());
+        xmlNodePtr const pStart = lcl_getDocumentRootPtr(m_aDocPtr);
+        if (!pStart) { return nullptr; }
+        xmlNodePtr const pNode = lcl_search_element_by_id(pStart, pId);
+        Reference< XElement > const xRet(
+            static_cast< XNode* >(GetCNode(pNode).get()),
+            UNO_QUERY);
+        return xRet;
+    }
+
+
+    Reference< XNodeList > SAL_CALL
+    CDocument::getElementsByTagName(OUString const& rTagname)
+    {
+        ::osl::MutexGuard const g(m_Mutex);
+
+        Reference< XNodeList > const xRet(
+            new CElementList(GetDocumentElement(), m_Mutex, rTagname));
+        return xRet;
+    }
+
+    Reference< XNodeList > SAL_CALL CDocument::getElementsByTagNameNS(
+            OUString const& rNamespaceURI, OUString const& rLocalName)
+    {
+        ::osl::MutexGuard const g(m_Mutex);
+
+        Reference< XNodeList > const xRet(
+            new CElementList(GetDocumentElement(), m_Mutex,
+                rLocalName, &rNamespaceURI));
+        return xRet;
+    }
+
+    Reference< XDOMImplementation > SAL_CALL CDocument::getImplementation()
+    {
+        // does not need mutex currently
+        return Reference< XDOMImplementation >(CDOMImplementation::get());
+    }
+
+    // helper function to recursively import siblings
+    static void lcl_ImportSiblings(
+        Reference< XDocument > const& xTargetDocument,
+        Reference< XNode > const& xTargetParent,
+        Reference< XNode > const& xChild)
+    {
+        Reference< XNode > xSibling = xChild;
+        while (xSibling.is())
+        {
+            Reference< XNode > const xTmp(
+                    xTargetDocument->importNode(xSibling, true));
+            xTargetParent->appendChild(xTmp);
+            xSibling = xSibling->getNextSibling();
+        }
+    }
+
+    static Reference< XNode >
+    lcl_ImportNode( Reference< XDocument > const& xDocument,
+            Reference< XNode > const& xImportedNode, bool deep)
+    {
+        Reference< XNode > xNode;
+        NodeType aNodeType = xImportedNode->getNodeType();
+        switch (aNodeType)
+        {
+        case NodeType_ATTRIBUTE_NODE:
+        {
+            Reference< XAttr > const xAttr(xImportedNode, UNO_QUERY_THROW);
+            Reference< XAttr > const xNew =
+                xDocument->createAttribute(xAttr->getName());
+            xNew->setValue(xAttr->getValue());
+            xNode = xNew;
+            break;
+        }
+        case NodeType_CDATA_SECTION_NODE:
+        {
+            Reference< XCDATASection > const xCData(xImportedNode,
+                    UNO_QUERY_THROW);
+            Reference< XCDATASection > const xNewCData =
+                xDocument->createCDATASection(xCData->getData());
+            xNode = xNewCData;
+            break;
+        }
+        case NodeType_COMMENT_NODE:
+        {
+            Reference< XComment > const xComment(xImportedNode,
+                    UNO_QUERY_THROW);
+            Reference< XComment > const xNewComment =
+                xDocument->createComment(xComment->getData());
+            xNode = xNewComment;
+            break;
+        }
+        case NodeType_DOCUMENT_FRAGMENT_NODE:
+        {
+            Reference< XDocumentFragment > const xFrag(xImportedNode,
+                    UNO_QUERY_THROW);
+            Reference< XDocumentFragment > const xNewFrag =
+                xDocument->createDocumentFragment();
+            xNode = xNewFrag;
+            break;
+        }
+        case NodeType_ELEMENT_NODE:
+        {
+            Reference< XElement > const xElement(xImportedNode,
+                    UNO_QUERY_THROW);
+            OUString const aNsUri = xImportedNode->getNamespaceURI();
+            OUString const aNsPrefix = xImportedNode->getPrefix();
+            OUString aQName = xElement->getTagName();
+            Reference< XElement > xNewElement;
+            if (!aNsUri.isEmpty())
+            {
+                if (!aNsPrefix.isEmpty()) {
+                    aQName = aNsPrefix + ":" + aQName;
+                }
+                xNewElement = xDocument->createElementNS(aNsUri, aQName);
+            } else {
+                xNewElement = xDocument->createElement(aQName);
+            }
+
+            // get attributes
+            if (xElement->hasAttributes())
+            {
+                Reference< XNamedNodeMap > attribs = xElement->getAttributes();
+                for (sal_Int32 i = 0; i < attribs->getLength(); i++)
+                {
+                    Reference< XAttr > const curAttr(attribs->item(i),
+                            UNO_QUERY_THROW);
+                    OUString const aAttrUri = curAttr->getNamespaceURI();
+                    OUString const aAttrPrefix = curAttr->getPrefix();
+                    OUString aAttrName = curAttr->getName();
+                    OUString const sValue = curAttr->getValue();
+                    if (!aAttrUri.isEmpty())
+                    {
+                        if (!aAttrPrefix.isEmpty()) {
+                            aAttrName = aAttrPrefix + ":" + aAttrName;
+                        }
+                        xNewElement->setAttributeNS(
+                                aAttrUri, aAttrName, sValue);
+                    } else {
+                        xNewElement->setAttribute(aAttrName, sValue);
+                    }
+                }
+            }
+            xNode = xNewElement;
+            break;
+        }
+        case NodeType_ENTITY_REFERENCE_NODE:
+        {
+            Reference< XEntityReference > const xRef(xImportedNode,
+                    UNO_QUERY_THROW);
+            Reference< XEntityReference > const xNewRef(
+                xDocument->createEntityReference(xRef->getNodeName()));
+            xNode = xNewRef;
+            break;
+        }
+        case NodeType_PROCESSING_INSTRUCTION_NODE:
+        {
+            Reference< XProcessingInstruction > const xPi(xImportedNode,
+                    UNO_QUERY_THROW);
+            Reference< XProcessingInstruction > const xNewPi(
+                xDocument->createProcessingInstruction(
+                    xPi->getTarget(), xPi->getData()));
+            xNode = xNewPi;
+            break;
+        }
+        case NodeType_TEXT_NODE:
+        {
+            Reference< XText > const xText(xImportedNode, UNO_QUERY_THROW);
+            Reference< XText > const xNewText(
+                xDocument->createTextNode(xText->getData()));
+            xNode = xNewText;
+            break;
+        }
+        case NodeType_ENTITY_NODE:
+        case NodeType_DOCUMENT_NODE:
+        case NodeType_DOCUMENT_TYPE_NODE:
+        case NodeType_NOTATION_NODE:
+        default:
+            // can't be imported
+            throw RuntimeException();
+
+        }
+        if (deep)
+        {
+            // get children and import them
+            Reference< XNode > const xChild = xImportedNode->getFirstChild();
+            if (xChild.is())
+            {
+                lcl_ImportSiblings(xDocument, xNode, xChild);
+            }
+        }
+
+        /* DOMNodeInsertedIntoDocument
+         * Fired when a node is being inserted into a document,
+         * either through direct insertion of the Node or insertion of a
+         * subtree in which it is contained. This event is dispatched after
+         * the insertion has taken place. The target of this event is the node
+         * being inserted. If the Node is being directly inserted the DOMNodeInserted
+         * event will fire before the DOMNodeInsertedIntoDocument event.
+         *   Bubbles: No
+         *   Cancelable: No
+         *   Context Info: None
+         */
+        if (xNode.is())
+        {
+            Reference< XDocumentEvent > const xDocevent(xDocument, UNO_QUERY);
+            Reference< XMutationEvent > const event(xDocevent->createEvent(
+                "DOMNodeInsertedIntoDocument"), UNO_QUERY_THROW);
+            event->initMutationEvent(
+                "DOMNodeInsertedIntoDocument", true, false, Reference< XNode >(),
+                OUString(), OUString(), OUString(), AttrChangeType(0) );
+            Reference< XEventTarget > const xDocET(xDocument, UNO_QUERY);
+            xDocET->dispatchEvent(event);
+        }
+
+        return xNode;
+    }
+
+    Reference< XNode > SAL_CALL CDocument::importNode(
+            Reference< XNode > const& xImportedNode, sal_Bool deep)
+    {
+        if (!xImportedNode.is()) { throw RuntimeException(); }
+
+        // NB: this whole operation inherently accesses 2 distinct documents.
+        // The imported node could even be from a different DOM implementation,
+        // so this implementation cannot make any assumptions about the
+        // locking strategy of the imported node.
+        // So the import takes no lock on this document;
+        // it only calls UNO methods on this document that temporarily
+        // lock the document, and UNO methods on the imported node that
+        // may temporarily lock the other document.
+        // As a consequence, the import is not atomic with regard to
+        // concurrent modifications of either document, but it should not
+        // deadlock.
+        // To ensure that no members are accessed, the implementation is in
+        // static non-member functions.
+
+        Reference< XDocument > const xDocument(this);
+        // already in doc?
+        if (xImportedNode->getOwnerDocument() == xDocument) {
+            return xImportedNode;
+        }
+
+        Reference< XNode > const xNode(
+            lcl_ImportNode(xDocument, xImportedNode, deep) );
+        return xNode;
+    }
+
+    OUString SAL_CALL CDocument::getNodeName()
+    {
+        // does not need mutex currently
+        return "#document";
+    }
+
+    OUString SAL_CALL CDocument::getNodeValue()
+    {
+        // does not need mutex currently
+        return OUString();
+    }
+
+    Reference< XNode > SAL_CALL CDocument::cloneNode(sal_Bool bDeep)
+    {
+        ::osl::MutexGuard const g(m_rMutex);
+
+        OSL_ASSERT(nullptr != m_aNodePtr);
+        if (nullptr == m_aNodePtr) {
+            return nullptr;
+        }
+        xmlDocPtr const pClone(xmlCopyDoc(m_aDocPtr, bDeep ? 1 : 0));
+        if (nullptr == pClone) { return nullptr; }
+        Reference< XNode > const xRet(
+            static_cast<CNode*>(CDocument::CreateCDocument(pClone).get()));
+        return xRet;
+    }
+
+    Reference< XEvent > SAL_CALL CDocument::createEvent(const OUString& aType)
+    {
+        // does not need mutex currently
+        rtl::Reference<events::CEvent> pEvent;
+        if ( aType == "DOMSubtreeModified" || aType == "DOMNodeInserted" || aType == "DOMNodeRemoved"
+          || aType == "DOMNodeRemovedFromDocument" || aType == "DOMNodeInsertedIntoDocument" || aType == "DOMAttrModified"
+          || aType == "DOMCharacterDataModified")
+        {
+            pEvent = new events::CMutationEvent;
+
+        } else if ( aType == "DOMFocusIn" || aType == "DOMFocusOut" || aType == "DOMActivate")
+        {
+            pEvent = new events::CUIEvent;
+        } else if ( aType == "click"     || aType == "mousedown" || aType == "mouseup"
+                 || aType == "mouseover" || aType == "mousemove" || aType == "mouseout" )
+        {
+            pEvent = new events::CMouseEvent;
+        }
+        else // generic event
+        {
+            pEvent = new events::CEvent;
+        }
+        return pEvent;
+    }
+
+    // css::xml::sax::XSAXSerializable
+    void SAL_CALL CDocument::serialize(
+            const Reference< XDocumentHandler >& i_xHandler,
+            const Sequence< beans::StringPair >& i_rNamespaces)
+    {
+        ::osl::MutexGuard const g(m_Mutex);
+
+        // add new namespaces to root node
+        xmlNodePtr const pRoot = lcl_getDocumentRootPtr(m_aDocPtr);
+        if (nullptr != pRoot) {
+            for (const beans::StringPair& rNsDef : i_rNamespaces) {
+                OString prefix = OUStringToOString(rNsDef.First,
+                                    RTL_TEXTENCODING_UTF8);
+                OString href   = OUStringToOString(rNsDef.Second,
+                                    RTL_TEXTENCODING_UTF8);
+                // this will only add the ns if it does not exist already
+                xmlNewNs(pRoot, reinterpret_cast<const xmlChar*>(href.getStr()),
+                         reinterpret_cast<const xmlChar*>(prefix.getStr()));
+            }
+            // eliminate duplicate namespace declarations
+            nscleanup(pRoot->children, pRoot);
+        }
+        saxify(i_xHandler);
+    }
+
+    // css::xml::sax::XFastSAXSerializable
+    void SAL_CALL CDocument::fastSerialize( const Reference< XFastDocumentHandler >& i_xHandler,
+                                            const Reference< XFastTokenHandler >& i_xTokenHandler,
+                                            const Sequence< beans::StringPair >& i_rNamespaces,
+                                            const Sequence< beans::Pair< OUString, sal_Int32 > >& i_rRegisterNamespaces )
+    {
+        ::osl::MutexGuard const g(m_Mutex);
+
+        // add new namespaces to root node
+        xmlNodePtr const pRoot = lcl_getDocumentRootPtr(m_aDocPtr);
+        if (nullptr != pRoot) {
+            for (const beans::StringPair& rNsDef : i_rNamespaces) {
+                OString prefix = OUStringToOString(rNsDef.First,
+                                    RTL_TEXTENCODING_UTF8);
+                OString href   = OUStringToOString(rNsDef.Second,
+                                    RTL_TEXTENCODING_UTF8);
+                // this will only add the ns if it does not exist already
+                xmlNewNs(pRoot, reinterpret_cast<const xmlChar*>(href.getStr()),
+                         reinterpret_cast<const xmlChar*>(prefix.getStr()));
+            }
+            // eliminate duplicate namespace declarations
+            nscleanup(pRoot->children, pRoot);
+        }
+
+        Context aContext(i_xHandler,
+                         dynamic_cast<sax_fastparser::FastTokenHandlerBase*>(i_xTokenHandler.get()));
+
+        // register namespace ids
+        for (const beans::Pair<OUString,sal_Int32>& rNs : i_rRegisterNamespaces)
+        {
+            OSL_ENSURE(rNs.Second >= FastToken::NAMESPACE,
+                       "CDocument::fastSerialize(): invalid NS token id");
+            aContext.maNamespaceMap[ rNs.First ] = rNs.Second;
+        }
+
+        fastSaxify(aContext);
+    }
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/unoxml/source/dom/document.hxx b/unoxml/source/dom/document.hxx
new file mode 100644
index 0000000000..450b9200f8
--- /dev/null
+++ b/unoxml/source/dom/document.hxx
@@ -0,0 +1,338 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#pragma once
+
+#include <memory>
+#include <unordered_map>
+
+#include <libxml/tree.h>
+
+#include <sal/types.h>
+
+#include <cppuhelper/implbase.hxx>
+#include <cppuhelper/weakref.hxx>
+
+#include <com/sun/star/uno/Reference.h>
+#include <com/sun/star/beans/StringPair.hpp>
+#include <com/sun/star/xml/dom/XNode.hpp>
+#include <com/sun/star/xml/dom/XAttr.hpp>
+#include <com/sun/star/xml/dom/XElement.hpp>
+#include <com/sun/star/xml/dom/XDOMImplementation.hpp>
+#include <com/sun/star/xml/dom/events/XDocumentEvent.hpp>
+#include <com/sun/star/xml/dom/events/XEvent.hpp>
+#include <com/sun/star/xml/sax/XSAXSerializable.hpp>
+#include <com/sun/star/xml/sax/XFastSAXSerializable.hpp>
+#include <com/sun/star/xml/sax/XDocumentHandler.hpp>
+#include <com/sun/star/xml/sax/XFastDocumentHandler.hpp>
+#include <com/sun/star/io/XActiveDataSource.hpp>
+#include <com/sun/star/io/XActiveDataControl.hpp>
+#include <com/sun/star/io/XOutputStream.hpp>
+#include <com/sun/star/io/XStreamListener.hpp>
+#include <o3tl/sorted_vector.hxx>
+
+#include <node.hxx>
+
+namespace DOM
+{
+    namespace events {
+        class CEventDispatcher;
+    }
+
+    class CElement;
+
+    typedef ::cppu::ImplInheritanceHelper<
+            CNode, css::xml::dom::XDocument, css::xml::dom::events::XDocumentEvent,
+            css::io::XActiveDataControl, css::io::XActiveDataSource,
+            css::xml::sax::XSAXSerializable, css::xml::sax::XFastSAXSerializable>
+        CDocument_Base;
+
+    class CDocument
+        : public CDocument_Base
+    {
+
+    private:
+        /// this Mutex is used for synchronization of all UNO wrapper
+        /// objects that belong to this document
+        ::osl::Mutex m_Mutex;
+        /// the libxml document: freed in destructor
+        /// => all UNO wrapper objects must keep the CDocument alive
+        xmlDocPtr const m_aDocPtr;
+
+        // datacontrol/source state
+        typedef o3tl::sorted_vector< css::uno::Reference< css::io::XStreamListener > > listenerlist_t;
+        listenerlist_t m_streamListeners;
+        css::uno::Reference< css::io::XOutputStream > m_rOutputStream;
+
+        typedef std::unordered_map< xmlNodePtr,
+                    ::std::pair< css::uno::WeakReference<css::xml::dom::XNode>, CNode* > > nodemap_t;
+        nodemap_t m_NodeMap;
+
+        ::std::unique_ptr<events::CEventDispatcher> const m_pEventDispatcher;
+
+        explicit CDocument(xmlDocPtr const pDocPtr);
+
+
+    public:
+        /// factory: only way to create instance!
+        static ::rtl::Reference<CDocument>
+            CreateCDocument(xmlDocPtr const pDoc);
+
+        virtual ~CDocument() override;
+
+        // needed by CXPathAPI
+        ::osl::Mutex & GetMutex() { return m_Mutex; }
+
+        events::CEventDispatcher & GetEventDispatcher();
+        ::rtl::Reference< CElement > GetDocumentElement();
+
+        /// get UNO wrapper instance for a libxml node
+        ::rtl::Reference<CNode> GetCNode(
+                xmlNodePtr const pNode, bool const bCreate = true);
+        /// remove a UNO wrapper instance
+        void RemoveCNode(xmlNodePtr const pNode, CNode const*const pCNode);
+
+        virtual CDocument & GetOwnerDocument() override;
+
+        virtual void saxify(const css::uno::Reference< css::xml::sax::XDocumentHandler >& i_xHandler) override;
+
+        virtual void fastSaxify( Context& rContext ) override;
+
+        virtual bool IsChildTypeAllowed(css::xml::dom::NodeType const nodeType,
+                css::xml::dom::NodeType const* pReplacedNodeType) override;
+
+        /**
+        Creates an Attr of the given name.
+        */
+        virtual css::uno::Reference< css::xml::dom::XAttr > SAL_CALL createAttribute(const OUString& name) override;
+
+        /**
+        Creates an attribute of the given qualified name and namespace URI.
+        */
+        virtual css::uno::Reference< css::xml::dom::XAttr > SAL_CALL createAttributeNS(const OUString& namespaceURI, const OUString& qualifiedName) override;
+
+        /**
+        Creates a CDATASection node whose value is the specified string.
+        */
+        virtual css::uno::Reference< css::xml::dom::XCDATASection > SAL_CALL createCDATASection(const OUString& data) override;
+
+        /**
+        Creates a Comment node given the specified string.
+        */
+        virtual css::uno::Reference< css::xml::dom::XComment > SAL_CALL createComment(const OUString& data) override;
+
+        /**
+        Creates an empty DocumentFragment object.
+        */
+        virtual css::uno::Reference< css::xml::dom::XDocumentFragment > SAL_CALL createDocumentFragment() override;
+
+        /**
+        Creates an element of the type specified.
+        */
+        virtual css::uno::Reference< css::xml::dom::XElement > SAL_CALL createElement(const OUString& tagName) override;
+
+        /**
+        Creates an element of the given qualified name and namespace URI.
+        */
+        virtual css::uno::Reference< css::xml::dom::XElement > SAL_CALL createElementNS(const OUString& namespaceURI, const OUString& qualifiedName) override;
+
+        /**
+        Creates an EntityReference object.
+        */
+        virtual css::uno::Reference< css::xml::dom::XEntityReference > SAL_CALL createEntityReference(const OUString& name) override;
+
+        /**
+        Creates a ProcessingInstruction node given the specified name and
+        data strings.
+        */
+        virtual css::uno::Reference< css::xml::dom::XProcessingInstruction > SAL_CALL createProcessingInstruction(
+                const OUString& target, const OUString& data) override;
+
+        /**
+        Creates a Text node given the specified string.
+        */
+        virtual css::uno::Reference< css::xml::dom::XText > SAL_CALL createTextNode(const OUString& data) override;
+
+        /**
+        The Document Type Declaration (see DocumentType) associated with this
+        document.
+        */
+        virtual css::uno::Reference< css::xml::dom::XDocumentType > SAL_CALL getDoctype() override;
+
+        /**
+        This is a convenience attribute that allows direct access to the child
+        node that is the root element of the document.
+        */
+        virtual css::uno::Reference< css::xml::dom::XElement > SAL_CALL getDocumentElement() override;
+
+        /**
+        Returns the Element whose ID is given by elementId.
+        */
+        virtual css::uno::Reference< css::xml::dom::XElement > SAL_CALL getElementById(const OUString& elementId) override;
+
+        /**
+        Returns a NodeList of all the Elements with a given tag name in the
+        order in which they are encountered in a preorder traversal of the
+        Document tree.
+        */
+        virtual css::uno::Reference< css::xml::dom::XNodeList > SAL_CALL getElementsByTagName(const OUString& tagname) override;
+
+        /**
+        Returns a NodeList of all the Elements with a given local name and
+        namespace URI in the order in which they are encountered in a preorder
+        traversal of the Document tree.
+        */
+        virtual css::uno::Reference< css::xml::dom::XNodeList > SAL_CALL getElementsByTagNameNS(const OUString& namespaceURI, const OUString& localName) override;
+
+        /**
+        The DOMImplementation object that handles this document.
+        */
+        virtual css::uno::Reference< css::xml::dom::XDOMImplementation > SAL_CALL getImplementation() override;
+
+        /**
+        Imports a node from another document to this document.
+        */
+        virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL importNode(const css::uno::Reference< css::xml::dom::XNode >& importedNode, sal_Bool deep) override;
+
+        // XDocumentEvent
+        virtual css::uno::Reference< css::xml::dom::events::XEvent > SAL_CALL createEvent(const OUString& eventType) override;
+
+        // XActiveDataControl,
+        // see https://api.libreoffice.org/docs/common/ref/com/sun/star/io/XActiveDataControl.html
+        virtual void SAL_CALL addListener(const css::uno::Reference< css::io::XStreamListener >& aListener ) override;
+        virtual void SAL_CALL removeListener(const css::uno::Reference< css::io::XStreamListener >& aListener ) override;
+        virtual void SAL_CALL start() override;
+        virtual void SAL_CALL terminate() override;
+
+        // XActiveDataSource
+        // see https://api.libreoffice.org/docs/common/ref/com/sun/star/io/XActiveDataSource.html
+        virtual void SAL_CALL setOutputStream(  const css::uno::Reference< css::io::XOutputStream >& aStream ) override;
+        virtual css::uno::Reference< css::io::XOutputStream > SAL_CALL getOutputStream() override;
+
+        // ---- resolve uno inheritance problems...
+        // overrides for XNode base
+        virtual OUString SAL_CALL getNodeName() override;
+        virtual OUString SAL_CALL getNodeValue() override;
+        virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL cloneNode(sal_Bool deep) override;
+        // --- delegation for XNode base.
+        virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL appendChild(const css::uno::Reference< css::xml::dom::XNode >& newChild) override
+        {
+            return CNode::appendChild(newChild);
+        }
+        virtual css::uno::Reference< css::xml::dom::XNamedNodeMap > SAL_CALL getAttributes() override
+        {
+            return CNode::getAttributes();
+        }
+        virtual css::uno::Reference< css::xml::dom::XNodeList > SAL_CALL getChildNodes() override
+        {
+            return CNode::getChildNodes();
+        }
+        virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL getFirstChild() override
+        {
+            return CNode::getFirstChild();
+        }
+        virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL getLastChild() override
+        {
+            return CNode::getLastChild();
+        }
+        virtual OUString SAL_CALL getLocalName() override
+        {
+            return CNode::getLocalName();
+        }
+        virtual OUString SAL_CALL getNamespaceURI() override
+        {
+            return CNode::getNamespaceURI();
+        }
+        virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL getNextSibling() override
+        {
+            return CNode::getNextSibling();
+        }
+        virtual css::xml::dom::NodeType SAL_CALL getNodeType() override
+        {
+            return CNode::getNodeType();
+        }
+        virtual css::uno::Reference< css::xml::dom::XDocument > SAL_CALL getOwnerDocument() override
+        {
+            return CNode::getOwnerDocument();
+        }
+        virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL getParentNode() override
+        {
+            return CNode::getParentNode();
+        }
+        virtual OUString SAL_CALL getPrefix() override
+        {
+           return CNode::getPrefix();
+        }
+        virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL getPreviousSibling() override
+        {
+            return CNode::getPreviousSibling();
+        }
+        virtual sal_Bool SAL_CALL hasAttributes() override
+        {
+            return CNode::hasAttributes();
+        }
+        virtual sal_Bool SAL_CALL hasChildNodes() override
+        {
+            return CNode::hasChildNodes();
+        }
+        virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL insertBefore(
+                const css::uno::Reference< css::xml::dom::XNode >& newChild, const css::uno::Reference< css::xml::dom::XNode >& refChild) override
+        {
+            return CNode::insertBefore(newChild, refChild);
+        }
+        virtual sal_Bool SAL_CALL isSupported(const OUString& feature, const OUString& ver) override
+        {
+            return CNode::isSupported(feature, ver);
+        }
+        virtual void SAL_CALL normalize() override
+        {
+            CNode::normalize();
+        }
+        virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL removeChild(const css::uno::Reference< css::xml::dom::XNode >& oldChild) override
+        {
+            return CNode::removeChild(oldChild);
+        }
+        virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL replaceChild(
+                const css::uno::Reference< css::xml::dom::XNode >& newChild, const css::uno::Reference< css::xml::dom::XNode >& oldChild) override
+        {
+            return CNode::replaceChild(newChild, oldChild);
+        }
+        virtual void SAL_CALL setNodeValue(const OUString& nodeValue) override
+        {
+            return CNode::setNodeValue(nodeValue);
+        }
+        virtual void SAL_CALL setPrefix(const OUString& prefix) override
+        {
+            return CNode::setPrefix(prefix);
+        }
+
+        // css::xml::sax::XSAXSerializable
+        virtual void SAL_CALL serialize(
+            const css::uno::Reference< css::xml::sax::XDocumentHandler >& i_xHandler,
+            const css::uno::Sequence< css::beans::StringPair >& i_rNamespaces) override;
+
+        // css::xml::sax::XFastSAXSerializable
+        virtual void SAL_CALL fastSerialize( const css::uno::Reference< css::xml::sax::XFastDocumentHandler >& handler,
+                                             const css::uno::Reference< css::xml::sax::XFastTokenHandler >& tokenHandler,
+                                             const css::uno::Sequence< css::beans::StringPair >& i_rNamespaces,
+                                             const css::uno::Sequence< css::beans::Pair< OUString, sal_Int32 > >& namespaces ) override;
+    };
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/unoxml/source/dom/documentbuilder.cxx b/unoxml/source/dom/documentbuilder.cxx
new file mode 100644
index 0000000000..3898d58e4b
--- /dev/null
+++ b/unoxml/source/dom/documentbuilder.cxx
@@ -0,0 +1,424 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include "documentbuilder.hxx"
+
+#include <string.h>
+
+#include <libxml/xmlerror.h>
+#include <libxml/parser.h>
+
+#include <memory>
+
+#include <sal/log.hxx>
+#include <comphelper/diagnose_ex.hxx>
+
+#include <comphelper/processfactory.hxx>
+#include <cppuhelper/implbase.hxx>
+#include <cppuhelper/supportsservice.hxx>
+
+#include <com/sun/star/xml/sax/SAXParseException.hpp>
+#include <com/sun/star/ucb/XCommandEnvironment.hpp>
+#include <com/sun/star/task/XInteractionHandler.hpp>
+#include <com/sun/star/ucb/SimpleFileAccess.hpp>
+
+#include <ucbhelper/content.hxx>
+#include <ucbhelper/commandenvironment.hxx>
+
+#include "document.hxx"
+
+using namespace css::io;
+using namespace css::lang;
+using namespace css::ucb;
+using namespace css::uno;
+using namespace css::xml::dom;
+using namespace css::xml::sax;
+using namespace ucbhelper;
+using css::task::XInteractionHandler;
+using css::xml::sax::InputSource;
+
+
+namespace DOM
+{
+    namespace {
+
+    class CDefaultEntityResolver : public cppu::WeakImplHelper< XEntityResolver >
+    {
+    public:
+        virtual InputSource SAL_CALL resolveEntity( const OUString& sPublicId, const OUString& sSystemId ) override
+        {
+            InputSource is;
+            is.sPublicId = sPublicId;
+            is.sSystemId = sSystemId;
+            is.sEncoding.clear();
+
+            try {
+                Reference< XCommandEnvironment > aEnvironment(
+                    new CommandEnvironment(Reference< XInteractionHandler >(),
+                                           Reference< XProgressHandler >() ));
+                Content aContent(sSystemId, aEnvironment, comphelper::getProcessComponentContext());
+
+                is.aInputStream = aContent.openStream();
+            } catch (const css::uno::Exception&) {
+                TOOLS_WARN_EXCEPTION( "unoxml", "exception in default entity resolver");
+                is.aInputStream.clear();
+            }
+            return is;
+        }
+
+    };
+
+    }
+
+    CDocumentBuilder::CDocumentBuilder()
+        : m_xEntityResolver(new CDefaultEntityResolver)
+    {
+        // init libxml. libxml will protect itself against multiple
+        // initializations so there is no problem here if this gets
+        // called multiple times.
+        xmlInitParser();
+    }
+
+    Sequence< OUString > SAL_CALL CDocumentBuilder::getSupportedServiceNames()
+    {
+        return { "com.sun.star.xml.dom.DocumentBuilder" };
+    }
+
+    OUString SAL_CALL CDocumentBuilder::getImplementationName()
+    {
+        return "com.sun.star.comp.xml.dom.DocumentBuilder";
+    }
+
+    sal_Bool SAL_CALL CDocumentBuilder::supportsService(const OUString& aServiceName)
+    {
+        return cppu::supportsService(this, aServiceName);
+    }
+
+    Reference< XDOMImplementation > SAL_CALL CDocumentBuilder::getDOMImplementation()
+    {
+
+        return Reference< XDOMImplementation >();
+    }
+
+    sal_Bool SAL_CALL CDocumentBuilder::isNamespaceAware()
+    {
+        return true;
+    }
+
+    sal_Bool SAL_CALL CDocumentBuilder::isValidating()
+    {
+        return false;
+    }
+
+    Reference< XDocument > SAL_CALL CDocumentBuilder::newDocument()
+    {
+        std::scoped_lock const g(m_Mutex);
+
+        // create a new document
+        xmlDocPtr pDocument = xmlNewDoc(reinterpret_cast<const xmlChar*>("1.0"));
+        return CDocument::CreateCDocument(pDocument);
+    }
+
+    static OUString make_error_message(xmlParserCtxtPtr ctxt)
+    {
+        return OUString(ctxt->lastError.message, strlen(ctxt->lastError.message), RTL_TEXTENCODING_ASCII_US) +
+               "Line: " +
+               OUString::number(static_cast<sal_Int32>(ctxt->lastError.line)) +
+               "\nColumn: " +
+               OUString::number(static_cast<sal_Int32>(ctxt->lastError.int2));
+    }
+
+    // -- callbacks and context struct for parsing from stream
+    // -- c-linkage, so the callbacks can be used by libxml
+    extern "C" {
+
+    namespace {
+
+    // context struct passed to IO functions
+    typedef struct context {
+        Reference< XInputStream > rInputStream;
+        bool close;
+        bool freeOnClose;
+    } context_t;
+
+    }
+
+    static int xmlIO_read_func( void *context, char *buffer, int len)
+    {
+        // get the context...
+        context_t *pctx = static_cast<context_t*>(context);
+        if (!pctx->rInputStream.is())
+            return -1;
+        try {
+            // try to read the requested number of bytes
+            Sequence< sal_Int8 > chunk(len);
+            int nread = pctx->rInputStream->readBytes(chunk, len);
+
+            // copy bytes to the provided buffer
+            memcpy(buffer, chunk.getConstArray(), nread);
+            return nread;
+        } catch (const css::uno::Exception&) {
+            TOOLS_WARN_EXCEPTION( "unoxml", "");
+            return -1;
+        }
+    }
+
+    static int xmlIO_close_func(void* context)
+    {
+        // get the context...
+        context_t *pctx = static_cast<context_t*>(context);
+        if (!pctx->rInputStream.is())
+            return 0;
+        try
+        {
+            if (pctx->close)
+                pctx->rInputStream->closeInput();
+            if (pctx->freeOnClose)
+                delete pctx;
+            return 0;
+        } catch (const css::uno::Exception&) {
+            TOOLS_WARN_EXCEPTION( "unoxml", "");
+            return -1;
+        }
+    }
+
+    static xmlParserInputPtr resolve_func(void *ctx,
+                                const xmlChar *publicId,
+                                const xmlChar *systemId)
+    {
+        // get the CDocumentBuilder object
+        xmlParserCtxtPtr ctxt = static_cast<xmlParserCtxtPtr>(ctx);
+        CDocumentBuilder *builder = static_cast< CDocumentBuilder* >(ctxt->_private);
+        Reference< XEntityResolver > resolver = builder->getEntityResolver();
+        OUString sysid;
+        if (systemId != nullptr)
+            sysid = OUString(reinterpret_cast<char const *>(systemId), strlen(reinterpret_cast<char const *>(systemId)), RTL_TEXTENCODING_UTF8);
+        OUString pubid;
+        if (publicId != nullptr)
+            pubid = OUString(reinterpret_cast<char const *>(publicId), strlen(reinterpret_cast<char const *>(publicId)), RTL_TEXTENCODING_UTF8);
+
+        // resolve the entity
+        InputSource src = resolver->resolveEntity(pubid, sysid);
+
+        // create IO context on heap because this call will no longer be on the stack
+        // when IO is actually performed through the callbacks. The close function must
+        // free the memory which is indicated by the freeOnClose field in the context struct
+        context_t *c = new context_t;
+        c->rInputStream = src.aInputStream;
+        c->close = true;
+        c->freeOnClose = true;
+
+        // set up the inputBuffer and inputPtr for libxml
+        xmlParserInputBufferPtr pBuffer =
+            xmlParserInputBufferCreateIO(xmlIO_read_func, xmlIO_close_func, c, XML_CHAR_ENCODING_NONE);
+        xmlParserInputPtr pInput =
+                    xmlNewIOInputStream(ctxt, pBuffer, XML_CHAR_ENCODING_NONE);
+        return pInput;
+    }
+
+#if 0
+    static xmlParserInputPtr external_entity_loader(const char *URL, const char * /*ID*/, xmlParserCtxtPtr ctxt)
+    {
+        // just call our resolver function using the URL as systemId
+        return resolve_func(ctxt, 0, (const xmlChar*)URL);
+    }
+#endif
+
+    // default warning handler does not trigger assertion
+    static void warning_func(void * ctx, const char * /*msg*/, ...)
+    {
+        try
+        {
+            xmlParserCtxtPtr const pctx = static_cast<xmlParserCtxtPtr>(ctx);
+
+            SAL_INFO(
+                "unoxml",
+                "libxml2 warning: "
+                << make_error_message(pctx));
+
+            CDocumentBuilder * const pDocBuilder = static_cast<CDocumentBuilder*>(pctx->_private);
+
+            if (pDocBuilder->getErrorHandler().is())   // if custom error handler is set (using setErrorHandler ())
+            {
+                // Prepare SAXParseException to be passed to custom XErrorHandler::warning function
+                css::xml::sax::SAXParseException saxex(make_error_message(pctx), {}, {}, {}, {},
+                                                       pctx->lastError.line, pctx->lastError.int2);
+
+                // Call custom warning function
+                pDocBuilder->getErrorHandler()->warning(::css::uno::Any(saxex));
+            }
+        }
+        catch (const css::uno::Exception &)
+        {
+            // Protect lib2xml from UNO Exception
+            TOOLS_WARN_EXCEPTION("unoxml", "DOM::warning_func");
+        }
+    }
+
+    // default error handler triggers assertion
+    static void error_func(void * ctx, const char * /*msg*/, ...)
+    {
+        try
+        {
+            xmlParserCtxtPtr const pctx = static_cast<xmlParserCtxtPtr>(ctx);
+            SAL_WARN(
+                "unoxml",
+                "libxml2 error: "
+                << make_error_message(pctx));
+
+            CDocumentBuilder * const pDocBuilder = static_cast<CDocumentBuilder*>(pctx->_private);
+
+            if (pDocBuilder->getErrorHandler().is())   // if custom error handler is set (using setErrorHandler ())
+            {
+                // Prepare SAXParseException to be passed to custom XErrorHandler::error function
+                css::xml::sax::SAXParseException saxex(make_error_message(pctx), {}, {}, {}, {},
+                                                       pctx->lastError.line, pctx->lastError.int2);
+
+                // Call custom warning function
+                pDocBuilder->getErrorHandler()->error(::css::uno::Any(saxex));
+            }
+        }
+        catch (const css::uno::Exception &)
+        {
+            // Protect lib2xml from UNO Exception
+            TOOLS_WARN_EXCEPTION("unoxml", "DOM::error_func");
+        }
+    }
+    } // extern "C"
+
+    static void throwEx(xmlParserCtxtPtr ctxt)
+    {
+        css::xml::sax::SAXParseException saxex(make_error_message(ctxt), {}, {}, {}, {},
+                                               ctxt->lastError.line, ctxt->lastError.int2);
+        throw saxex;
+    }
+
+    namespace {
+
+    struct XmlFreeParserCtxt {
+        void operator ()(xmlParserCtxt * p) const { xmlFreeParserCtxt(p); }
+    };
+
+    }
+
+    Reference< XDocument > SAL_CALL CDocumentBuilder::parse(const Reference< XInputStream >& is)
+    {
+        if (!is.is()) {
+            throw RuntimeException();
+        }
+
+        std::scoped_lock const g(m_Mutex);
+
+        // IO context struct.  Must outlive pContext, as destroying that via
+        // xmlFreeParserCtxt may still access this context_t
+        context_t c;
+        c.rInputStream = is;
+        // we did not open the stream, thus we do not close it.
+        c.close = false;
+        c.freeOnClose = false;
+
+        std::unique_ptr<xmlParserCtxt, XmlFreeParserCtxt> const pContext(
+                xmlNewParserCtxt());
+
+        // register error functions to prevent errors being printed
+        // on the console
+        pContext->_private = this;
+        pContext->sax->error = error_func;
+        pContext->sax->warning = warning_func;
+        pContext->sax->resolveEntity = resolve_func;
+
+        xmlDocPtr const pDoc = xmlCtxtReadIO(pContext.get(),
+                xmlIO_read_func, xmlIO_close_func, &c, nullptr, nullptr, 0);
+
+        if (pDoc == nullptr) {
+            throwEx(pContext.get());
+        }
+        return CDocument::CreateCDocument(pDoc);
+    }
+
+    Reference< XDocument > SAL_CALL CDocumentBuilder::parseURI(const OUString& sUri)
+    {
+        std::scoped_lock const g(m_Mutex);
+
+        std::unique_ptr<xmlParserCtxt, XmlFreeParserCtxt> const pContext(
+                xmlNewParserCtxt());
+        pContext->_private = this;
+        pContext->sax->error = error_func;
+        pContext->sax->warning = warning_func;
+        pContext->sax->resolveEntity = resolve_func;
+        // xmlSetExternalEntityLoader(external_entity_loader);
+        OString oUri = OUStringToOString(sUri, RTL_TEXTENCODING_UTF8);
+        char *uri = const_cast<char*>(oUri.getStr());
+        xmlDocPtr pDoc = xmlCtxtReadFile(pContext.get(), uri, nullptr, 0);
+
+        Reference< XDocument > xRet;
+
+        // if we failed to parse the URI as a simple file, lets try via a ucb stream.
+        // For Android file:///assets/ URLs which must go via the osl/ file API.
+        if (pDoc == nullptr) {
+            Reference < XSimpleFileAccess3 > xStreamAccess(
+                SimpleFileAccess::create( comphelper::getProcessComponentContext() ) );
+            Reference< XInputStream > xInStream = xStreamAccess->openFileRead( sUri );
+            if (!xInStream.is())
+                throwEx(pContext.get());
+
+            // loop over every layout entry in current file
+            xRet = parse( xInStream );
+
+            xInStream->closeInput();
+            xInStream.clear();
+
+        } else
+            xRet = CDocument::CreateCDocument(pDoc).get();
+
+        return xRet;
+    }
+
+    void SAL_CALL
+    CDocumentBuilder::setEntityResolver(Reference< XEntityResolver > const& xER)
+    {
+        std::scoped_lock const g(m_Mutex);
+
+        m_xEntityResolver = xER;
+    }
+
+    Reference< XEntityResolver > CDocumentBuilder::getEntityResolver()
+    {
+        std::scoped_lock const g(m_Mutex);
+
+        return m_xEntityResolver;
+    }
+
+    void SAL_CALL
+    CDocumentBuilder::setErrorHandler(Reference< XErrorHandler > const& xEH)
+    {
+        std::scoped_lock const g(m_Mutex);
+
+        m_xErrorHandler = xEH;
+    }
+}
+
+extern "C" SAL_DLLPUBLIC_EXPORT css::uno::XInterface*
+unoxml_CDocumentBuilder_get_implementation(
+    css::uno::XComponentContext* , css::uno::Sequence<css::uno::Any> const&)
+{
+    return cppu::acquire(new DOM::CDocumentBuilder());
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/unoxml/source/dom/documentbuilder.hxx b/unoxml/source/dom/documentbuilder.hxx
new file mode 100644
index 0000000000..7b93b170d4
--- /dev/null
+++ b/unoxml/source/dom/documentbuilder.hxx
@@ -0,0 +1,127 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#pragma once
+
+#include <sal/types.h>
+
+#include <cppuhelper/implbase.hxx>
+
+#include <com/sun/star/uno/Reference.h>
+#include <com/sun/star/uno/Sequence.h>
+
+#include <com/sun/star/xml/dom/XDocumentBuilder.hpp>
+#include <com/sun/star/xml/dom/XDocument.hpp>
+#include <com/sun/star/xml/dom/XDOMImplementation.hpp>
+#include <com/sun/star/xml/sax/XEntityResolver.hpp>
+#include <com/sun/star/xml/sax/XErrorHandler.hpp>
+#include <com/sun/star/io/XInputStream.hpp>
+#include <com/sun/star/lang/XServiceInfo.hpp>
+#include <mutex>
+
+namespace DOM
+{
+    typedef ::cppu::WeakImplHelper
+        < css::xml::dom::XDocumentBuilder
+        , css::lang::XServiceInfo
+        > CDocumentBuilder_Base;
+
+    class CDocumentBuilder
+        : public CDocumentBuilder_Base
+    {
+    private:
+        std::recursive_mutex m_Mutex;
+        css::uno::Reference< css::xml::sax::XEntityResolver > m_xEntityResolver;
+        css::uno::Reference< css::xml::sax::XErrorHandler > m_xErrorHandler;
+
+    public:
+
+        // ctor
+        explicit CDocumentBuilder();
+
+        // XServiceInfo
+        virtual OUString SAL_CALL getImplementationName() override;
+        virtual sal_Bool SAL_CALL supportsService(const OUString& ServiceName) override;
+        virtual css::uno::Sequence< OUString > SAL_CALL getSupportedServiceNames () override;
+
+        /**
+        Obtain an instance of a DOMImplementation object.
+        */
+        virtual css::uno::Reference< css::xml::dom::XDOMImplementation > SAL_CALL getDOMImplementation() override;
+
+        /**
+        Indicates whether or not this parser is configured to understand
+        namespaces.
+        */
+        virtual sal_Bool SAL_CALL isNamespaceAware() override;
+
+        /**
+        Indicates whether or not this parser is configured to validate XML
+        documents.
+        */
+        virtual sal_Bool SAL_CALL isValidating() override;
+
+        /**
+        Obtain a new instance of a DOM Document object to build a DOM tree
+        with.
+        */
+        virtual css::uno::Reference< css::xml::dom::XDocument > SAL_CALL newDocument() override;
+
+        /**
+        Parse the content of the given InputStream as an XML document and
+        return a new DOM Document object.
+        */
+        virtual css::uno::Reference< css::xml::dom::XDocument > SAL_CALL parse(const css::uno::Reference< css::io::XInputStream >& is) override;
+
+        /**
+        Parse the content of the given URI as an XML document and return
+        a new DOM Document object.
+        */
+        virtual css::uno::Reference< css::xml::dom::XDocument > SAL_CALL parseURI(const OUString& uri) override;
+
+        /**
+        Specify the EntityResolver to be used to resolve entities present
+        in the XML document to be parsed.
+        */
+        virtual void SAL_CALL setEntityResolver(const css::uno::Reference< css::xml::sax::XEntityResolver >& er) override;
+
+        /// @throws css::uno::RuntimeException
+        css::uno::Reference< css::xml::sax::XEntityResolver > getEntityResolver();
+
+
+        /**
+        Specify the ErrorHandler to be used to report errors present in
+        the XML document to be parsed.
+        */
+        virtual void SAL_CALL setErrorHandler(const css::uno::Reference< css::xml::sax::XErrorHandler >& eh) override;
+
+        /*
+        Get the ErrorHandler to be used to report errors present in
+        the XML document to be parsed.
+        */
+
+        const css::uno::Reference< css::xml::sax::XErrorHandler >& getErrorHandler() const
+        {
+            return m_xErrorHandler;
+        }
+
+    };
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/unoxml/source/dom/documentfragment.cxx b/unoxml/source/dom/documentfragment.cxx
new file mode 100644
index 0000000000..dd3ed3c18f
--- /dev/null
+++ b/unoxml/source/dom/documentfragment.cxx
@@ -0,0 +1,60 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include "documentfragment.hxx"
+
+using namespace css::uno;
+using namespace css::xml::dom;
+
+namespace DOM
+{
+    CDocumentFragment::CDocumentFragment(
+            CDocument const& rDocument, ::osl::Mutex const& rMutex,
+            xmlNodePtr const pNode)
+        : CDocumentFragment_Base(rDocument, rMutex,
+                NodeType_DOCUMENT_FRAGMENT_NODE, pNode)
+    {
+    }
+
+    bool CDocumentFragment::IsChildTypeAllowed(NodeType const nodeType, NodeType const*const)
+    {
+        switch (nodeType) {
+            case NodeType_ELEMENT_NODE:
+            case NodeType_PROCESSING_INSTRUCTION_NODE:
+            case NodeType_COMMENT_NODE:
+            case NodeType_TEXT_NODE:
+            case NodeType_CDATA_SECTION_NODE:
+            case NodeType_ENTITY_REFERENCE_NODE:
+                return true;
+            default:
+                return false;
+        }
+    }
+
+    OUString SAL_CALL CDocumentFragment::getNodeName()
+    {
+        return "#document-fragment";
+    }
+    OUString SAL_CALL CDocumentFragment::getNodeValue()
+    {
+        return OUString();
+    }
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/unoxml/source/dom/documentfragment.hxx b/unoxml/source/dom/documentfragment.hxx
new file mode 100644
index 0000000000..c71edc86a7
--- /dev/null
+++ b/unoxml/source/dom/documentfragment.hxx
@@ -0,0 +1,150 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#pragma once
+
+#include <com/sun/star/uno/Reference.h>
+#include <com/sun/star/xml/dom/XDocumentFragment.hpp>
+
+#include <cppuhelper/implbase.hxx>
+#include <node.hxx>
+
+namespace DOM
+{
+    typedef ::cppu::ImplInheritanceHelper< CNode, css::xml::dom::XDocumentFragment >
+        CDocumentFragment_Base;
+
+    class CDocumentFragment
+        : public CDocumentFragment_Base
+    {
+        friend class CDocument;
+
+        CDocumentFragment(
+                CDocument const& rDocument, ::osl::Mutex const& rMutex,
+                xmlNodePtr const pNode);
+
+    public:
+        virtual bool IsChildTypeAllowed(css::xml::dom::NodeType const nodeType,
+                        css::xml::dom::NodeType const*) override;
+
+        // ---- resolve uno inheritance problems...
+        // overrides for XNode base
+        virtual OUString SAL_CALL getNodeName() override;
+        virtual OUString SAL_CALL getNodeValue() override;
+    // --- delegation for XNode base.
+    virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL appendChild(const css::uno::Reference< css::xml::dom::XNode >& newChild) override
+    {
+        return CNode::appendChild(newChild);
+    }
+    virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL cloneNode(sal_Bool deep) override
+    {
+        return CNode::cloneNode(deep);
+    }
+    virtual css::uno::Reference< css::xml::dom::XNamedNodeMap > SAL_CALL getAttributes() override
+    {
+        return CNode::getAttributes();
+    }
+    virtual css::uno::Reference< css::xml::dom::XNodeList > SAL_CALL getChildNodes() override
+    {
+        return CNode::getChildNodes();
+    }
+    virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL getFirstChild() override
+    {
+        return CNode::getFirstChild();
+    }
+    virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL getLastChild() override
+    {
+        return CNode::getLastChild();
+    }
+    virtual OUString SAL_CALL getLocalName() override
+    {
+        return CNode::getLocalName();
+    }
+    virtual OUString SAL_CALL getNamespaceURI() override
+    {
+        return CNode::getNamespaceURI();
+    }
+    virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL getNextSibling() override
+    {
+        return CNode::getNextSibling();
+    }
+    virtual css::xml::dom::NodeType SAL_CALL getNodeType() override
+    {
+        return CNode::getNodeType();
+    }
+    virtual css::uno::Reference< css::xml::dom::XDocument > SAL_CALL getOwnerDocument() override
+    {
+        return CNode::getOwnerDocument();
+    }
+    virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL getParentNode() override
+    {
+        return CNode::getParentNode();
+    }
+    virtual OUString SAL_CALL getPrefix() override
+    {
+        return CNode::getPrefix();
+    }
+    virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL getPreviousSibling() override
+    {
+        return CNode::getPreviousSibling();
+    }
+    virtual sal_Bool SAL_CALL hasAttributes() override
+    {
+        return CNode::hasAttributes();
+    }
+    virtual sal_Bool SAL_CALL hasChildNodes() override
+    {
+        return CNode::hasChildNodes();
+    }
+    virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL insertBefore(
+            const css::uno::Reference< css::xml::dom::XNode >& newChild, const css::uno::Reference< css::xml::dom::XNode >& refChild) override
+    {
+        return CNode::insertBefore(newChild, refChild);
+    }
+    virtual sal_Bool SAL_CALL isSupported(const OUString& feature, const OUString& ver) override
+    {
+        return CNode::isSupported(feature, ver);
+    }
+    virtual void SAL_CALL normalize() override
+    {
+        CNode::normalize();
+    }
+    virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL removeChild(const css::uno::Reference< css::xml::dom::XNode >& oldChild) override
+    {
+        return CNode::removeChild(oldChild);
+    }
+    virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL replaceChild(
+            const css::uno::Reference< css::xml::dom::XNode >& newChild, const css::uno::Reference< css::xml::dom::XNode >& oldChild) override
+    {
+        return CNode::replaceChild(newChild, oldChild);
+    }
+    virtual void SAL_CALL setNodeValue(const OUString& nodeValue) override
+    {
+        return CNode::setNodeValue(nodeValue);
+    }
+    virtual void SAL_CALL setPrefix(const OUString& prefix) override
+    {
+        return CNode::setPrefix(prefix);
+    }
+
+
+    };
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/unoxml/source/dom/documenttype.cxx b/unoxml/source/dom/documenttype.cxx
new file mode 100644
index 0000000000..d79e2d0d0f
--- /dev/null
+++ b/unoxml/source/dom/documenttype.cxx
@@ -0,0 +1,142 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include "documenttype.hxx"
+
+#include <string.h>
+
+#include <osl/diagnose.h>
+
+#include "entitiesmap.hxx"
+#include "notationsmap.hxx"
+
+using namespace css::uno;
+using namespace css::xml::dom;
+
+namespace DOM
+{
+
+    CDocumentType::CDocumentType(
+            CDocument const& rDocument, ::osl::Mutex const& rMutex,
+            xmlDtdPtr const pDtd)
+        : CDocumentType_Base(rDocument, rMutex,
+            NodeType_DOCUMENT_TYPE_NODE, reinterpret_cast<xmlNodePtr>(pDtd))
+        , m_aDtdPtr(pDtd)
+    {
+    }
+
+    /**
+    A NamedNodeMap containing the general entities, both external and
+    internal, declared in the DTD.
+    */
+    css::uno::Reference< XNamedNodeMap > SAL_CALL CDocumentType::getEntities()
+    {
+        ::osl::MutexGuard const g(m_rMutex);
+
+        css::uno::Reference< XNamedNodeMap > aMap;
+        if (m_aDtdPtr != nullptr)
+        {
+            aMap.set(new CEntitiesMap);
+        }
+        return aMap;
+    }
+
+    /**
+    The internal subset as a string, or null if there is none.
+    */
+    OUString SAL_CALL CDocumentType::getInternalSubset()
+    {
+        OSL_ENSURE(false,
+            "CDocumentType::getInternalSubset: not implemented (#i113683#)");
+        return OUString();
+    }
+
+    /**
+    The name of DTD; i.e., the name immediately following the DOCTYPE
+    keyword.
+    */
+    OUString SAL_CALL CDocumentType::getName()
+    {
+        ::osl::MutexGuard const g(m_rMutex);
+
+        OUString aName;
+        if (m_aDtdPtr != nullptr)
+        {
+            aName = OUString(reinterpret_cast<char const *>(m_aDtdPtr->name), strlen(reinterpret_cast<char const *>(m_aDtdPtr->name)), RTL_TEXTENCODING_UTF8);
+        }
+        return aName;
+    }
+
+    /**
+    A NamedNodeMap containing the notations declared in the DTD.
+    */
+    css::uno::Reference< XNamedNodeMap > SAL_CALL CDocumentType::getNotations()
+    {
+        ::osl::MutexGuard const g(m_rMutex);
+
+        css::uno::Reference< XNamedNodeMap > aMap;
+        if (m_aDtdPtr != nullptr)
+        {
+            aMap.set(new CNotationsMap);
+        }
+        return aMap;
+    }
+
+    /**
+    The public identifier of the external subset.
+    */
+    OUString SAL_CALL CDocumentType::getPublicId()
+    {
+        ::osl::MutexGuard const g(m_rMutex);
+
+        OUString aId;
+        if (m_aDtdPtr != nullptr)
+        {
+            aId = OUString(reinterpret_cast<char const *>(m_aDtdPtr->name), strlen(reinterpret_cast<char const *>(m_aDtdPtr->ExternalID)), RTL_TEXTENCODING_UTF8);
+        }
+        return aId;
+    }
+
+    /**
+    The system identifier of the external subset.
+    */
+    OUString SAL_CALL CDocumentType::getSystemId()
+    {
+        ::osl::MutexGuard const g(m_rMutex);
+
+        OUString aId;
+        if (m_aDtdPtr != nullptr)
+        {
+            aId = OUString(reinterpret_cast<char const *>(m_aDtdPtr->name), strlen(reinterpret_cast<char const *>(m_aDtdPtr->SystemID)), RTL_TEXTENCODING_UTF8);
+        }
+        return aId;
+    }
+
+    OUString SAL_CALL CDocumentType::getNodeName()
+    {
+        return getName();
+    }
+
+    OUString SAL_CALL CDocumentType::getNodeValue()
+    {
+        return OUString();
+    }
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/unoxml/source/dom/documenttype.hxx b/unoxml/source/dom/documenttype.hxx
new file mode 100644
index 0000000000..48f857bf7e
--- /dev/null
+++ b/unoxml/source/dom/documenttype.hxx
@@ -0,0 +1,186 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#pragma once
+
+#include <libxml/tree.h>
+
+#include <sal/types.h>
+
+#include <com/sun/star/uno/Reference.h>
+#include <com/sun/star/xml/dom/XDocumentType.hpp>
+#include <com/sun/star/xml/dom/XNodeList.hpp>
+#include <com/sun/star/xml/dom/XNamedNodeMap.hpp>
+
+#include <cppuhelper/implbase.hxx>
+#include <node.hxx>
+
+namespace DOM
+{
+    typedef ::cppu::ImplInheritanceHelper< CNode, css::xml::dom::XDocumentType >
+        CDocumentType_Base;
+
+    class CDocumentType
+        : public CDocumentType_Base
+    {
+    private:
+        friend class CDocument;
+
+        xmlDtdPtr m_aDtdPtr;
+
+        CDocumentType(CDocument const& rDocument, ::osl::Mutex const& rMutex,
+                xmlDtdPtr const pDtd);
+
+    public:
+        /**
+        A NamedNodeMap containing the general entities, both external and
+        internal, declared in the DTD.
+        */
+        virtual css::uno::Reference< css::xml::dom::XNamedNodeMap > SAL_CALL getEntities() override;
+
+        /**
+        The internal subset as a string, or null if there is none.
+        */
+        virtual OUString SAL_CALL getInternalSubset() override;
+
+        /**
+        The name of DTD; i.e., the name immediately following the DOCTYPE
+        keyword.
+        */
+        virtual OUString SAL_CALL getName() override;
+
+        /**
+        A NamedNodeMap containing the notations declared in the DTD.
+        */
+        virtual css::uno::Reference< css::xml::dom::XNamedNodeMap > SAL_CALL getNotations() override;
+
+        /**
+        The public identifier of the external subset.
+        */
+        virtual OUString SAL_CALL getPublicId() override;
+
+        /**
+        The system identifier of the external subset.
+        */
+        virtual OUString SAL_CALL getSystemId() override;
+
+        // ---- resolve uno inheritance problems...
+        // overrides for XNode base
+        virtual OUString SAL_CALL getNodeName() override;
+        virtual OUString SAL_CALL getNodeValue() override;
+    // --- delegation for XNode base.
+    virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL appendChild(const css::uno::Reference< css::xml::dom::XNode >& newChild) override
+    {
+        return CNode::appendChild(newChild);
+    }
+    virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL cloneNode(sal_Bool deep) override
+    {
+        return CNode::cloneNode(deep);
+    }
+    virtual css::uno::Reference< css::xml::dom::XNamedNodeMap > SAL_CALL getAttributes() override
+    {
+        return CNode::getAttributes();
+    }
+    virtual css::uno::Reference< css::xml::dom::XNodeList > SAL_CALL getChildNodes() override
+    {
+        return CNode::getChildNodes();
+    }
+    virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL getFirstChild() override
+    {
+        return CNode::getFirstChild();
+    }
+    virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL getLastChild() override
+    {
+        return CNode::getLastChild();
+    }
+    virtual OUString SAL_CALL getLocalName() override
+    {
+        return CNode::getLocalName();
+    }
+    virtual OUString SAL_CALL getNamespaceURI() override
+    {
+        return CNode::getNamespaceURI();
+    }
+    virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL getNextSibling() override
+    {
+        return CNode::getNextSibling();
+    }
+    virtual css::xml::dom::NodeType SAL_CALL getNodeType() override
+    {
+        return CNode::getNodeType();
+    }
+    virtual css::uno::Reference< css::xml::dom::XDocument > SAL_CALL getOwnerDocument() override
+    {
+        return CNode::getOwnerDocument();
+    }
+    virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL getParentNode() override
+    {
+        return CNode::getParentNode();
+    }
+    virtual OUString SAL_CALL getPrefix() override
+    {
+        return CNode::getPrefix();
+    }
+    virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL getPreviousSibling() override
+    {
+        return CNode::getPreviousSibling();
+    }
+    virtual sal_Bool SAL_CALL hasAttributes() override
+    {
+        return CNode::hasAttributes();
+    }
+    virtual sal_Bool SAL_CALL hasChildNodes() override
+    {
+        return CNode::hasChildNodes();
+    }
+    virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL insertBefore(
+            const css::uno::Reference< css::xml::dom::XNode >& newChild, const css::uno::Reference< css::xml::dom::XNode >& refChild) override
+    {
+        return CNode::insertBefore(newChild, refChild);
+    }
+    virtual sal_Bool SAL_CALL isSupported(const OUString& feature, const OUString& ver) override
+    {
+        return CNode::isSupported(feature, ver);
+    }
+    virtual void SAL_CALL normalize() override
+    {
+        CNode::normalize();
+    }
+    virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL removeChild(const css::uno::Reference< css::xml::dom::XNode >& oldChild) override
+    {
+        return CNode::removeChild(oldChild);
+    }
+    virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL replaceChild(
+            const css::uno::Reference< css::xml::dom::XNode >& newChild, const css::uno::Reference< css::xml::dom::XNode >& oldChild) override
+    {
+        return CNode::replaceChild(newChild, oldChild);
+    }
+    virtual void SAL_CALL setNodeValue(const OUString& nodeValue) override
+    {
+        return CNode::setNodeValue(nodeValue);
+    }
+    virtual void SAL_CALL setPrefix(const OUString& prefix) override
+    {
+        return CNode::setPrefix(prefix);
+    }
+
+    };
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/unoxml/source/dom/domimplementation.cxx b/unoxml/source/dom/domimplementation.cxx
new file mode 100644
index 0000000000..0bd7e5940a
--- /dev/null
+++ b/unoxml/source/dom/domimplementation.cxx
@@ -0,0 +1,80 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include "domimplementation.hxx"
+
+#include <osl/diagnose.h>
+#include <rtl/ref.hxx>
+
+using namespace css::uno;
+using namespace css::xml::dom;
+
+namespace DOM
+{
+    CDOMImplementation* CDOMImplementation::get()
+    {
+        // why the heck is this thing static?
+        // perhaps it would be helpful to know what the implementation should
+        // do to answer this question...
+        static rtl::Reference<CDOMImplementation> xDOMImplementation = new CDOMImplementation;
+        return &*xDOMImplementation;
+    }
+
+    // there is just 1 static instance, so these must not delete it!
+    void SAL_CALL CDOMImplementation::acquire() noexcept { }
+    void SAL_CALL CDOMImplementation::release() noexcept { }
+
+    /**
+    Creates a DOM Document object of the specified type with its document element.
+    */
+    Reference <XDocument > SAL_CALL CDOMImplementation::createDocument(
+           OUString const& /*rNamespaceURI*/,
+           OUString const& /*rQualifiedName*/,
+           Reference< XDocumentType > const& /*xDoctype*/)
+    {
+        OSL_ENSURE(false,
+            "CDOMImplementation::createDocument: not implemented (#i113683#)");
+        return Reference<XDocument>();
+    }
+
+    /**
+    Creates an empty DocumentType node.
+    */
+    Reference< XDocumentType > SAL_CALL CDOMImplementation::createDocumentType(
+            OUString const& /*rQualifiedName*/,
+            OUString const& /*rPublicId*/, OUString const& /*rSystemId*/)
+    {
+        OSL_ENSURE(false, "CDOMImplementation::createDocumentType: "
+                "not implemented (#i113683#)");
+        return Reference<XDocumentType>();
+    }
+
+    /**
+    Test if the DOM implementation implements a specific feature.
+    */
+    sal_Bool SAL_CALL
+    CDOMImplementation::hasFeature(OUString const& /*feature*/, OUString const& /*ver*/)
+    {
+        OSL_ENSURE(false,
+            "CDOMImplementation::hasFeature: not implemented (#i113683#)");
+        return false;
+    }
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/unoxml/source/dom/domimplementation.hxx b/unoxml/source/dom/domimplementation.hxx
new file mode 100644
index 0000000000..955a4e32ea
--- /dev/null
+++ b/unoxml/source/dom/domimplementation.hxx
@@ -0,0 +1,61 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#pragma once
+
+#include <sal/types.h>
+
+#include <com/sun/star/uno/Reference.h>
+#include <com/sun/star/xml/dom/XDocument.hpp>
+#include <com/sun/star/xml/dom/XDocumentType.hpp>
+#include <com/sun/star/xml/dom/XDOMImplementation.hpp>
+
+#include <cppuhelper/implbase.hxx>
+
+namespace DOM
+{
+    class CDOMImplementation
+        : public cppu::WeakImplHelper< css::xml::dom::XDOMImplementation >
+    {
+
+    public:
+        static CDOMImplementation* get();
+
+        // there is just 1 static instance, so these must not delete it!
+        virtual void SAL_CALL acquire() noexcept override;
+        virtual void SAL_CALL release() noexcept override;
+
+        /**
+        Creates a DOM Document object of the specified type with its document element.
+        */
+        virtual css::uno::Reference< css::xml::dom::XDocument > SAL_CALL createDocument(const OUString& namespaceURI, const OUString& qualifiedName, const css::uno::Reference< css::xml::dom::XDocumentType >& doctype) override;
+
+        /**
+        Creates an empty DocumentType node.
+        */
+        virtual css::uno::Reference< css::xml::dom::XDocumentType > SAL_CALL createDocumentType(const OUString& qualifiedName, const OUString& publicId, const OUString& systemId) override;
+
+        /**
+        Test if the DOM implementation implements a specific feature.
+        */
+        virtual sal_Bool SAL_CALL hasFeature(const OUString& feature, const OUString& ver) override;
+        };
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/unoxml/source/dom/element.cxx b/unoxml/source/dom/element.cxx
new file mode 100644
index 0000000000..6f60c8d950
--- /dev/null
+++ b/unoxml/source/dom/element.cxx
@@ -0,0 +1,754 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include "element.hxx"
+
+#include <string.h>
+
+#include <memory>
+
+#include <osl/diagnose.h>
+#include <rtl/ustrbuf.hxx>
+
+#include <com/sun/star/xml/dom/DOMException.hpp>
+#include <com/sun/star/xml/dom/events/XMutationEvent.hpp>
+#include <com/sun/star/xml/sax/FastToken.hpp>
+
+#include <comphelper/attributelist.hxx>
+#include <comphelper/servicehelper.hxx>
+
+#include <node.hxx>
+#include "attr.hxx"
+#include "elementlist.hxx"
+#include "attributesmap.hxx"
+#include "document.hxx"
+
+using namespace css::uno;
+using namespace css::xml::dom;
+using namespace css::xml::dom::events;
+using namespace css::xml::sax;
+
+namespace DOM
+{
+
+    CElement::CElement(CDocument const& rDocument, ::osl::Mutex const& rMutex,
+            xmlNodePtr const pNode)
+        : CElement_Base(rDocument, rMutex, NodeType_ELEMENT_NODE, pNode)
+    {
+    }
+
+    void CElement::saxify(const Reference< XDocumentHandler >& i_xHandler)
+    {
+        if (!i_xHandler.is()) throw RuntimeException();
+        rtl::Reference<comphelper::AttributeList> pAttrs =
+            new comphelper::AttributeList();
+        // add namespace definitions to attributes
+        for (xmlNsPtr pNs = m_aNodePtr->nsDef; pNs != nullptr; pNs = pNs->next) {
+            const xmlChar *pPrefix = pNs->prefix ? pNs->prefix : reinterpret_cast<const xmlChar*>("");
+            OUString prefix(reinterpret_cast<const char*>(pPrefix),
+                strlen(reinterpret_cast<const char*>(pPrefix)),
+                RTL_TEXTENCODING_UTF8);
+            OUString name = (prefix.isEmpty())
+                ? OUString( "xmlns" ) : "xmlns:" + prefix;
+            const xmlChar *pHref = pNs->href;
+            OUString val(reinterpret_cast<const char*>(pHref),
+                strlen(reinterpret_cast<const char*>(pHref)),
+                RTL_TEXTENCODING_UTF8);
+            pAttrs->AddAttribute(name, val);
+        }
+        // add attributes
+        for (xmlAttrPtr pAttr = m_aNodePtr->properties;
+                        pAttr != nullptr; pAttr = pAttr->next) {
+            ::rtl::Reference<CNode> const pNode = GetOwnerDocument().GetCNode(
+                    reinterpret_cast<xmlNodePtr>(pAttr));
+            OSL_ENSURE(pNode != nullptr, "CNode::get returned 0");
+            OUString prefix = pNode->getPrefix();
+            OUString name = (prefix.isEmpty())
+                ? pNode->getLocalName()
+                : prefix + ":" + pNode->getLocalName();
+            OUString val  = pNode->getNodeValue();
+            pAttrs->AddAttribute(name, val);
+        }
+        OUString prefix = getPrefix();
+        OUString name = (prefix.isEmpty())
+            ? getLocalName()
+            : prefix + ":" + getLocalName();
+        i_xHandler->startElement(name, pAttrs);
+        // recurse
+        for (xmlNodePtr pChild = m_aNodePtr->children;
+                        pChild != nullptr; pChild = pChild->next) {
+            ::rtl::Reference<CNode> const pNode(
+                    GetOwnerDocument().GetCNode(pChild));
+            OSL_ENSURE(pNode != nullptr, "CNode::get returned 0");
+            pNode->saxify(i_xHandler);
+        }
+        i_xHandler->endElement(name);
+    }
+
+    void CElement::fastSaxify( Context& i_rContext )
+    {
+        if (!i_rContext.mxDocHandler.is()) throw RuntimeException();
+        pushContext(i_rContext);
+        addNamespaces(i_rContext,m_aNodePtr);
+
+        // add attributes
+        i_rContext.mxAttribList->clear();
+        for (xmlAttrPtr pAttr = m_aNodePtr->properties;
+                        pAttr != nullptr; pAttr = pAttr->next) {
+            ::rtl::Reference<CNode> const pNode = GetOwnerDocument().GetCNode(
+                    reinterpret_cast<xmlNodePtr>(pAttr));
+            OSL_ENSURE(pNode != nullptr, "CNode::get returned 0");
+
+            const xmlChar* pName = pAttr->name;
+            sal_Int32 nAttributeToken=FastToken::DONTKNOW;
+
+            if( pAttr->ns && strlen(reinterpret_cast<char const *>(pAttr->ns->prefix)) )
+                nAttributeToken = getTokenWithPrefix( i_rContext,
+                                                      reinterpret_cast<char const *>(pAttr->ns->prefix),
+                                                      reinterpret_cast<char const *>(pName) );
+            else
+                nAttributeToken = getToken( i_rContext, reinterpret_cast<char const *>(pName) );
+
+            if( nAttributeToken != FastToken::DONTKNOW )
+                i_rContext.mxAttribList->add( nAttributeToken,
+                                              OUStringToOString(pNode->getNodeValue(),
+                                                                RTL_TEXTENCODING_UTF8));
+        }
+
+        const xmlChar* pPrefix = (m_aNodePtr->ns && m_aNodePtr->ns->prefix) ? m_aNodePtr->ns->prefix : reinterpret_cast<const xmlChar*>("");
+        const xmlChar* pName = m_aNodePtr->name;
+        sal_Int32 nElementToken=FastToken::DONTKNOW;
+        if( strlen(reinterpret_cast<char const *>(pPrefix)) )
+            nElementToken = getTokenWithPrefix( i_rContext, reinterpret_cast<char const *>(pPrefix), reinterpret_cast<char const *>(pName) );
+        else
+            nElementToken = getToken( i_rContext, reinterpret_cast<char const *>(pName) );
+
+        Reference<XFastContextHandler> xParentHandler(i_rContext.mxCurrentHandler);
+        try
+        {
+            Reference< XFastAttributeList > xAttr( i_rContext.mxAttribList );
+            if( nElementToken == FastToken::DONTKNOW )
+            {
+                const OUString aNamespace;
+                const OUString aElementName( reinterpret_cast<char const *>(pPrefix),
+                                             strlen(reinterpret_cast<char const *>(pPrefix)),
+                                             RTL_TEXTENCODING_UTF8 );
+
+                if( xParentHandler.is() )
+                    i_rContext.mxCurrentHandler = xParentHandler->createUnknownChildContext( aNamespace, aElementName, xAttr );
+                else
+                    i_rContext.mxCurrentHandler = i_rContext.mxDocHandler->createUnknownChildContext( aNamespace, aElementName, xAttr );
+
+                if( i_rContext.mxCurrentHandler.is() )
+                    i_rContext.mxCurrentHandler->startUnknownElement( aNamespace, aElementName, xAttr );
+            }
+            else
+            {
+                if( xParentHandler.is() )
+                    i_rContext.mxCurrentHandler = xParentHandler->createFastChildContext( nElementToken, xAttr );
+                else
+                    i_rContext.mxCurrentHandler = i_rContext.mxDocHandler->createFastChildContext( nElementToken, xAttr );
+
+                if( i_rContext.mxCurrentHandler.is() )
+                    i_rContext.mxCurrentHandler->startFastElement( nElementToken, xAttr );
+            }
+        }
+        catch( Exception& )
+        {}
+
+        // recurse
+        for (xmlNodePtr pChild = m_aNodePtr->children;
+                        pChild != nullptr; pChild = pChild->next) {
+            ::rtl::Reference<CNode> const pNode(
+                    GetOwnerDocument().GetCNode(pChild));
+            OSL_ENSURE(pNode != nullptr, "CNode::get returned 0");
+            pNode->fastSaxify(i_rContext);
+        }
+
+        if( i_rContext.mxCurrentHandler.is() ) try
+        {
+            if( nElementToken != FastToken::DONTKNOW )
+                i_rContext.mxCurrentHandler->endFastElement( nElementToken );
+            else
+            {
+                const OUString aElementName( reinterpret_cast<char const *>(pPrefix),
+                                             strlen(reinterpret_cast<char const *>(pPrefix)),
+                                             RTL_TEXTENCODING_UTF8 );
+
+                i_rContext.mxCurrentHandler->endUnknownElement( "", aElementName );
+            }
+        }
+        catch( Exception& )
+        {}
+
+        // restore after children have been processed
+        i_rContext.mxCurrentHandler = xParentHandler;
+        popContext(i_rContext);
+    }
+
+    bool CElement::IsChildTypeAllowed(NodeType const nodeType, NodeType const*const)
+    {
+        switch (nodeType) {
+            case NodeType_ELEMENT_NODE:
+            case NodeType_TEXT_NODE:
+            case NodeType_COMMENT_NODE:
+            case NodeType_PROCESSING_INSTRUCTION_NODE:
+            case NodeType_CDATA_SECTION_NODE:
+            case NodeType_ENTITY_REFERENCE_NODE:
+                return true;
+            case NodeType_ATTRIBUTE_NODE:
+                /* this is not really allowed by the DOM spec, but this
+                   implementation has evidently supported it (by special case
+                   handling, so the attribute does not actually become a child)
+                   so allow it for backward compatibility */
+                return true;
+            default:
+                return false;
+        }
+    }
+
+
+    /**
+        Retrieves an attribute value by name.
+        return empty string if attribute is not set
+    */
+    OUString SAL_CALL CElement::getAttribute(OUString const& name)
+    {
+        ::osl::MutexGuard const g(m_rMutex);
+
+        if (nullptr == m_aNodePtr) {
+            return OUString();
+        }
+        // search properties
+        OString o1 = OUStringToOString(name, RTL_TEXTENCODING_UTF8);
+        std::shared_ptr<xmlChar const> const pValue(
+            xmlGetProp(m_aNodePtr, reinterpret_cast<xmlChar const *>(o1.getStr())), xmlFree);
+        OUString const ret( pValue
+            ?   OUString(reinterpret_cast<char const*>(pValue.get()),
+                        strlen(reinterpret_cast<char const*>(pValue.get())),
+                        RTL_TEXTENCODING_UTF8)
+            :   OUString() );
+        return ret;
+    }
+
+    /**
+    Retrieves an attribute node by name.
+    */
+    Reference< XAttr > SAL_CALL CElement::getAttributeNode(OUString const& name)
+    {
+        ::osl::MutexGuard const g(m_rMutex);
+
+        if (nullptr == m_aNodePtr) {
+            return nullptr;
+        }
+        OString o1 = OUStringToOString(name, RTL_TEXTENCODING_UTF8);
+        xmlChar const*const pName =
+            reinterpret_cast<xmlChar const*>(o1.getStr());
+        xmlAttrPtr const pAttr = xmlHasProp(m_aNodePtr, pName);
+        if (nullptr == pAttr) {
+            return nullptr;
+        }
+        Reference< XAttr > const xRet(
+            static_cast< XNode* >(GetOwnerDocument().GetCNode(
+                    reinterpret_cast<xmlNodePtr>(pAttr)).get()),
+            UNO_QUERY_THROW);
+        return xRet;
+    }
+
+    /**
+    Retrieves an Attr node by local name and namespace URI.
+    */
+    Reference< XAttr > SAL_CALL CElement::getAttributeNodeNS(
+            const OUString& namespaceURI, const OUString& localName)
+    {
+        ::osl::MutexGuard const g(m_rMutex);
+
+        if (nullptr == m_aNodePtr) {
+            return nullptr;
+        }
+        OString o1 = OUStringToOString(localName, RTL_TEXTENCODING_UTF8);
+        xmlChar const*const pName =
+            reinterpret_cast<xmlChar const*>(o1.getStr());
+        OString o2 = OUStringToOString(namespaceURI, RTL_TEXTENCODING_UTF8);
+        xmlChar const*const pNS =
+            reinterpret_cast<xmlChar const*>(o2.getStr());
+        xmlAttrPtr const pAttr = xmlHasNsProp(m_aNodePtr, pName, pNS);
+        if (nullptr == pAttr) {
+            return nullptr;
+        }
+        Reference< XAttr > const xRet(
+            static_cast< XNode* >(GetOwnerDocument().GetCNode(
+                    reinterpret_cast<xmlNodePtr>(pAttr)).get()),
+            UNO_QUERY_THROW);
+        return xRet;
+    }
+
+    /**
+    Retrieves an attribute value by local name and namespace URI.
+    return empty string if attribute is not set
+    */
+    OUString SAL_CALL
+    CElement::getAttributeNS(
+            OUString const& namespaceURI, OUString const& localName)
+    {
+        ::osl::MutexGuard const g(m_rMutex);
+
+        if (nullptr == m_aNodePtr) {
+            return OUString();
+        }
+        OString o1 = OUStringToOString(localName, RTL_TEXTENCODING_UTF8);
+        xmlChar const*const pName =
+            reinterpret_cast<xmlChar const*>(o1.getStr());
+        OString o2 = OUStringToOString(namespaceURI, RTL_TEXTENCODING_UTF8);
+        xmlChar const*const pNS =
+            reinterpret_cast<xmlChar const*>(o2.getStr());
+        std::shared_ptr<xmlChar const> const pValue(
+                xmlGetNsProp(m_aNodePtr, pName, pNS), xmlFree);
+        if (nullptr == pValue) {
+            return OUString();
+        }
+        OUString const ret(reinterpret_cast<char const*>(pValue.get()),
+                        strlen(reinterpret_cast<char const*>(pValue.get())),
+                        RTL_TEXTENCODING_UTF8);
+        return ret;
+    }
+
+    /**
+    Returns a NodeList of all descendant Elements with a given tag name,
+    in the order in which they are
+    encountered in a preorder traversal of this Element tree.
+    */
+    Reference< XNodeList > SAL_CALL
+    CElement::getElementsByTagName(OUString const& rLocalName)
+    {
+        ::osl::MutexGuard const g(m_rMutex);
+
+        Reference< XNodeList > const xList(
+                new CElementList(this, m_rMutex, rLocalName));
+        return xList;
+    }
+
+    /**
+    Returns a NodeList of all the descendant Elements with a given local
+    name and namespace URI in the order in which they are encountered in
+    a preorder traversal of this Element tree.
+    */
+    Reference< XNodeList > SAL_CALL
+    CElement::getElementsByTagNameNS(
+            OUString const& rNamespaceURI, OUString const& rLocalName)
+    {
+        ::osl::MutexGuard const g(m_rMutex);
+
+        Reference< XNodeList > const xList(
+            new CElementList(this, m_rMutex, rLocalName, &rNamespaceURI));
+        return xList;
+    }
+
+    /**
+    The name of the element.
+    */
+    OUString SAL_CALL CElement::getTagName()
+    {
+        ::osl::MutexGuard const g(m_rMutex);
+
+        if (nullptr == m_aNodePtr) {
+            return OUString();
+        }
+        OUString const ret(reinterpret_cast<char const *>(m_aNodePtr->name),
+                strlen(reinterpret_cast<char const *>(m_aNodePtr->name)), RTL_TEXTENCODING_UTF8);
+        return ret;
+    }
+
+
+    /**
+    Returns true when an attribute with a given name is specified on this
+    element or has a default value, false otherwise.
+    */
+    sal_Bool SAL_CALL CElement::hasAttribute(OUString const& name)
+    {
+        ::osl::MutexGuard const g(m_rMutex);
+
+        OString o1 = OUStringToOString(name, RTL_TEXTENCODING_UTF8);
+        xmlChar const *pName = reinterpret_cast<xmlChar const *>(o1.getStr());
+        return (m_aNodePtr != nullptr && xmlHasProp(m_aNodePtr, pName) != nullptr);
+    }
+
+    /**
+    Returns true when an attribute with a given local name and namespace
+    URI is specified on this element or has a default value, false otherwise.
+    */
+    sal_Bool SAL_CALL CElement::hasAttributeNS(
+            OUString const& namespaceURI, OUString const& localName)
+    {
+        ::osl::MutexGuard const g(m_rMutex);
+
+        OString o1 = OUStringToOString(localName, RTL_TEXTENCODING_UTF8);
+        xmlChar const *pName = reinterpret_cast<xmlChar const *>(o1.getStr());
+        OString o2 = OUStringToOString(namespaceURI, RTL_TEXTENCODING_UTF8);
+        xmlChar const *pNs = reinterpret_cast<xmlChar const *>(o2.getStr());
+        return (m_aNodePtr != nullptr && xmlHasNsProp(m_aNodePtr, pName, pNs) != nullptr);
+    }
+
+    /**
+    Removes an attribute by name.
+    */
+    void SAL_CALL CElement::removeAttribute(OUString const& name)
+    {
+        ::osl::MutexGuard const g(m_rMutex);
+
+        if (nullptr == m_aNodePtr) {
+            return;
+        }
+        OString o1 = OUStringToOString(name, RTL_TEXTENCODING_UTF8);
+        xmlChar const*const pName =
+            reinterpret_cast<xmlChar const*>(o1.getStr());
+        xmlAttrPtr const pAttr = xmlHasProp(m_aNodePtr, pName);
+        if (0 == xmlUnsetProp(m_aNodePtr, pName)) {
+            ::rtl::Reference<CNode> const pCNode(GetOwnerDocument().GetCNode(
+                    reinterpret_cast<xmlNodePtr>(pAttr), false));
+            if (pCNode.is()) {
+                pCNode->invalidate(); // freed by xmlUnsetProp
+            }
+        }
+    }
+
+    /**
+    Removes an attribute by local name and namespace URI.
+    */
+    void SAL_CALL CElement::removeAttributeNS(
+            OUString const& namespaceURI, OUString const& localName)
+    {
+        ::osl::MutexGuard const g(m_rMutex);
+
+        if (nullptr == m_aNodePtr) {
+            return;
+        }
+        OString o1 = OUStringToOString(localName, RTL_TEXTENCODING_UTF8);
+        xmlChar const*const pName =
+            reinterpret_cast<xmlChar const*>(o1.getStr());
+        OString o2 = OUStringToOString(namespaceURI, RTL_TEXTENCODING_UTF8);
+        xmlChar const*const pURI =
+            reinterpret_cast<xmlChar const*>(o2.getStr());
+        xmlNsPtr const pNs =
+            xmlSearchNsByHref(m_aNodePtr->doc, m_aNodePtr, pURI);
+        xmlAttrPtr const pAttr = xmlHasNsProp(m_aNodePtr, pName, pURI);
+        if (0 == xmlUnsetNsProp(m_aNodePtr, pNs, pName)) {
+            ::rtl::Reference<CNode> const pCNode(GetOwnerDocument().GetCNode(
+                    reinterpret_cast<xmlNodePtr>(pAttr), false));
+            if (pCNode.is()) {
+                pCNode->invalidate(); // freed by xmlUnsetNsProp
+            }
+        }
+    }
+
+    /**
+    Removes the specified attribute node.
+    */
+    Reference< XAttr > SAL_CALL
+    CElement::removeAttributeNode(Reference< XAttr > const& oldAttr)
+    {
+        ::osl::MutexGuard const g(m_rMutex);
+
+        if (nullptr == m_aNodePtr) {
+            return nullptr;
+        }
+
+        ::rtl::Reference<CNode> const pCNode(
+            dynamic_cast<CNode*>(oldAttr.get()));
+        if (!pCNode.is()) { throw RuntimeException(); }
+
+        xmlNodePtr const pNode = pCNode->GetNodePtr();
+        xmlAttrPtr const pAttr = reinterpret_cast<xmlAttrPtr>(pNode);
+        if (!pAttr) { throw RuntimeException(); }
+
+        if (pAttr->parent != m_aNodePtr)
+        {
+            DOMException e;
+            e.Code = DOMExceptionType_HIERARCHY_REQUEST_ERR;
+            throw e;
+        }
+        if (pAttr->doc != m_aNodePtr->doc)
+        {
+            DOMException e;
+            e.Code = DOMExceptionType_WRONG_DOCUMENT_ERR;
+            throw e;
+        }
+
+        Reference< XAttr > aAttr;
+        if (!oldAttr->getNamespaceURI().isEmpty()) {
+            OUStringBuffer qname(oldAttr->getPrefix());
+            if (!qname.isEmpty()) {
+                qname.append(':');
+            }
+            qname.append(oldAttr->getName());
+            aAttr = GetOwnerDocument().createAttributeNS(
+                oldAttr->getNamespaceURI(), qname.makeStringAndClear());
+        } else {
+            aAttr = GetOwnerDocument().createAttribute(oldAttr->getName());
+        }
+        aAttr->setValue(oldAttr->getValue());
+        xmlRemoveProp(pAttr);
+        pCNode->invalidate(); // freed by xmlRemoveProp
+
+        return aAttr;
+    }
+
+    /**
+    Adds a new attribute node.
+    */
+    Reference< XAttr >
+    CElement::setAttributeNode_Impl_Lock(
+            Reference< XAttr > const& xNewAttr, bool const bNS)
+    {
+        if (xNewAttr->getOwnerDocument() != getOwnerDocument()) {
+            DOMException e;
+            e.Code = DOMExceptionType_WRONG_DOCUMENT_ERR;
+            throw e;
+        }
+
+        ::osl::ClearableMutexGuard guard(m_rMutex);
+
+        if (nullptr == m_aNodePtr) {
+            throw RuntimeException();
+        }
+
+        // get the implementation
+        CAttr *const pCAttr = dynamic_cast<CAttr*>(xNewAttr.get());
+        if (!pCAttr) { throw RuntimeException(); }
+        xmlAttrPtr const pAttr =
+            reinterpret_cast<xmlAttrPtr>(pCAttr->GetNodePtr());
+        if (!pAttr) { throw RuntimeException(); }
+
+        // check whether the attribute is not in use by another element
+        if (pAttr->parent) {
+            DOMException e;
+            e.Code = DOMExceptionType_INUSE_ATTRIBUTE_ERR;
+            throw e;
+        }
+
+        xmlAttrPtr res = nullptr;
+        xmlChar const*const pContent(
+                (pAttr->children) ? pAttr->children->content : nullptr);
+
+        if (bNS) {
+            xmlNsPtr const pNs( pCAttr->GetNamespace(m_aNodePtr) );
+            res = xmlNewNsProp(m_aNodePtr, pNs, pAttr->name, pContent);
+        } else {
+            res = xmlNewProp(m_aNodePtr, pAttr->name, pContent);
+        }
+
+        // get the new attr node
+        Reference< XAttr > const xAttr(
+            static_cast< XNode* >(GetOwnerDocument().GetCNode(
+                    reinterpret_cast<xmlNodePtr>(res)).get()),
+            UNO_QUERY_THROW);
+
+        // attribute addition event
+        // dispatch DOMAttrModified event
+        Reference< XDocumentEvent > docevent(getOwnerDocument(), UNO_QUERY);
+        Reference< XMutationEvent > event(docevent->createEvent(
+            "DOMAttrModified"), UNO_QUERY);
+        event->initMutationEvent("DOMAttrModified",
+            true, false, xAttr,
+            OUString(), xAttr->getValue(), xAttr->getName(),
+            AttrChangeType_ADDITION);
+
+        guard.clear(); // release mutex before calling event handlers
+
+        dispatchEvent(event);
+        dispatchSubtreeModified();
+
+        return xAttr;
+    }
+
+    Reference< XAttr >
+    CElement::setAttributeNode(const Reference< XAttr >& newAttr)
+    {
+        return setAttributeNode_Impl_Lock(newAttr, false);
+    }
+
+    /**
+    Adds a new attribute.
+    */
+    Reference< XAttr >
+    CElement::setAttributeNodeNS(const Reference< XAttr >& newAttr)
+    {
+        return setAttributeNode_Impl_Lock(newAttr, true);
+    }
+
+    /**
+    Adds a new attribute.
+    */
+    void SAL_CALL
+    CElement::setAttribute(OUString const& name, OUString const& value)
+    {
+        ::osl::ClearableMutexGuard guard(m_rMutex);
+
+        OString o1 = OUStringToOString(name, RTL_TEXTENCODING_UTF8);
+        xmlChar const *pName = reinterpret_cast<xmlChar const *>(o1.getStr());
+        OString o2 = OUStringToOString(value, RTL_TEXTENCODING_UTF8);
+        xmlChar const *pValue = reinterpret_cast<xmlChar const *>(o2.getStr());
+
+        if (nullptr == m_aNodePtr) {
+            throw RuntimeException();
+        }
+        OUString oldValue;
+        AttrChangeType aChangeType = AttrChangeType_MODIFICATION;
+        std::shared_ptr<xmlChar const> const pOld(
+            xmlGetProp(m_aNodePtr, pName), xmlFree);
+        if (pOld == nullptr) {
+            aChangeType = AttrChangeType_ADDITION;
+            xmlNewProp(m_aNodePtr, pName, pValue);
+        } else {
+            oldValue = OUString(reinterpret_cast<char const*>(pOld.get()),
+                        strlen(reinterpret_cast<char const*>(pOld.get())),
+                        RTL_TEXTENCODING_UTF8);
+            xmlSetProp(m_aNodePtr, pName, pValue);
+        }
+
+        // dispatch DOMAttrModified event
+        Reference< XDocumentEvent > docevent(getOwnerDocument(), UNO_QUERY);
+        Reference< XMutationEvent > event(docevent->createEvent(
+            "DOMAttrModified"), UNO_QUERY);
+        event->initMutationEvent("DOMAttrModified",
+            true, false,
+            getAttributeNode(name),
+            oldValue, value, name, aChangeType);
+
+        guard.clear(); // release mutex before calling event handlers
+        dispatchEvent(event);
+        dispatchSubtreeModified();
+    }
+
+    /**
+    Adds a new attribute.
+    */
+    void SAL_CALL
+    CElement::setAttributeNS(OUString const& namespaceURI,
+            OUString const& qualifiedName, OUString const& value)
+    {
+        if (namespaceURI.isEmpty()) throw RuntimeException();
+
+        ::osl::ClearableMutexGuard guard(m_rMutex);
+
+        OString o1, o2, o3, o4, o5;
+        xmlChar const *pPrefix = nullptr;
+        xmlChar const *pLName = nullptr;
+        o1 = OUStringToOString(qualifiedName, RTL_TEXTENCODING_UTF8);
+        xmlChar const *pQName = reinterpret_cast<xmlChar const *>(o1.getStr());
+        sal_Int32 idx = qualifiedName.indexOf(':');
+        if (idx != -1)
+        {
+            o2 = OUStringToOString(
+                qualifiedName.subView(0,idx),
+                RTL_TEXTENCODING_UTF8);
+            pPrefix = reinterpret_cast<xmlChar const *>(o2.getStr());
+            o3 = OUStringToOString(
+                qualifiedName.subView(idx+1),
+                RTL_TEXTENCODING_UTF8);
+            pLName = reinterpret_cast<xmlChar const *>(o3.getStr());
+        }  else {
+            pPrefix = reinterpret_cast<xmlChar const *>("");
+            pLName = pQName;
+        }
+        o4 = OUStringToOString(namespaceURI, RTL_TEXTENCODING_UTF8);
+        o5 = OUStringToOString(value, RTL_TEXTENCODING_UTF8);
+        xmlChar const *pURI= reinterpret_cast<xmlChar const *>(o4.getStr());
+        xmlChar const *pValue = reinterpret_cast<xmlChar const *>(o5.getStr());
+
+        if (nullptr == m_aNodePtr) {
+            throw RuntimeException();
+        }
+
+        //find the right namespace
+        xmlNsPtr pNs = xmlSearchNs(m_aNodePtr->doc, m_aNodePtr, pPrefix);
+        // if no namespace found, create a new one
+        if (pNs == nullptr) {
+            pNs = xmlNewNs(m_aNodePtr, pURI, pPrefix);
+        }
+
+        if (strcmp(reinterpret_cast<char const *>(pNs->href), reinterpret_cast<char const *>(pURI)) != 0) {
+            // ambiguous ns prefix
+            throw RuntimeException();
+        }
+
+        // found namespace matches
+
+        OUString oldValue;
+        AttrChangeType aChangeType = AttrChangeType_MODIFICATION;
+        std::shared_ptr<xmlChar const> const pOld(
+                xmlGetNsProp(m_aNodePtr, pLName, pNs->href), xmlFree);
+        if (pOld == nullptr) {
+            aChangeType = AttrChangeType_ADDITION;
+            xmlNewNsProp(m_aNodePtr, pNs, pLName, pValue);
+        } else {
+            oldValue = OUString(reinterpret_cast<char const*>(pOld.get()),
+                        strlen(reinterpret_cast<char const*>(pOld.get())),
+                        RTL_TEXTENCODING_UTF8);
+            xmlSetNsProp(m_aNodePtr, pNs, pLName, pValue);
+        }
+        // dispatch DOMAttrModified event
+        Reference< XDocumentEvent > docevent(getOwnerDocument(), UNO_QUERY);
+        Reference< XMutationEvent > event(docevent->createEvent(
+            "DOMAttrModified"), UNO_QUERY);
+        event->initMutationEvent(
+            "DOMAttrModified", true, false,
+            getAttributeNodeNS(namespaceURI, OUString(reinterpret_cast<char const *>(pLName), strlen(reinterpret_cast<char const *>(pLName)), RTL_TEXTENCODING_UTF8)),
+            oldValue, value, qualifiedName, aChangeType);
+
+        guard.clear(); // release mutex before calling event handlers
+        dispatchEvent(event);
+        dispatchSubtreeModified();
+    }
+
+    Reference< XNamedNodeMap > SAL_CALL
+    CElement::getAttributes()
+    {
+        ::osl::MutexGuard const g(m_rMutex);
+
+        Reference< XNamedNodeMap > const xMap(
+                new CAttributesMap(this, m_rMutex));
+        return xMap;
+    }
+
+    OUString SAL_CALL CElement::getNodeName()
+    {
+        return getLocalName();
+    }
+
+    OUString SAL_CALL CElement::getLocalName()
+    {
+        ::osl::MutexGuard const g(m_rMutex);
+
+        OUString aName;
+        if (m_aNodePtr != nullptr)
+        {
+            const xmlChar* pName = m_aNodePtr->name;
+            aName = OUString(reinterpret_cast<const char*>(pName), strlen(reinterpret_cast<const char*>(pName)), RTL_TEXTENCODING_UTF8);
+        }
+        return aName;
+    }
+
+    OUString SAL_CALL CElement::getNodeValue()
+    {
+        return OUString();
+    }
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/unoxml/source/dom/element.hxx b/unoxml/source/dom/element.hxx
new file mode 100644
index 0000000000..3810e09353
--- /dev/null
+++ b/unoxml/source/dom/element.hxx
@@ -0,0 +1,246 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#pragma once
+
+#include <libxml/tree.h>
+
+#include <com/sun/star/uno/Reference.h>
+#include <com/sun/star/xml/dom/XNode.hpp>
+#include <com/sun/star/xml/dom/XNodeList.hpp>
+#include <com/sun/star/xml/dom/XNamedNodeMap.hpp>
+#include <com/sun/star/xml/dom/NodeType.hpp>
+
+#include <cppuhelper/implbase.hxx>
+#include <node.hxx>
+
+namespace DOM
+{
+    typedef ::cppu::ImplInheritanceHelper<CNode, css::xml::dom::XElement > CElement_Base;
+
+    class CElement
+        : public CElement_Base
+    {
+    private:
+        friend class CDocument;
+
+        css::uno::Reference< css::xml::dom::XAttr > setAttributeNode_Impl_Lock(
+                css::uno::Reference< css::xml::dom::XAttr > const& xNewAttr, bool const bNS);
+
+    protected:
+        CElement(CDocument const& rDocument, ::osl::Mutex const& rMutex,
+                xmlNodePtr const pNode);
+
+    public:
+
+        virtual void saxify(const css::uno::Reference< css::xml::sax::XDocumentHandler >& i_xHandler) override;
+
+        virtual void fastSaxify( Context& i_rContext ) override;
+
+        virtual bool IsChildTypeAllowed(css::xml::dom::NodeType const nodeType,
+                        css::xml::dom::NodeType const*) override;
+
+        /**
+        Retrieves an attribute value by name.
+        */
+        virtual OUString  SAL_CALL getAttribute(const OUString& name) override;
+
+        /**
+        Retrieves an attribute node by name.
+        */
+        virtual css::uno::Reference< css::xml::dom::XAttr > SAL_CALL getAttributeNode(const OUString& name) override;
+
+        /**
+        Retrieves an Attr node by local name and namespace URI.
+        */
+        virtual css::uno::Reference< css::xml::dom::XAttr > SAL_CALL getAttributeNodeNS(const OUString& namespaceURI, const OUString& localName) override;
+
+        /**
+        Retrieves an attribute value by local name and namespace URI.
+        */
+        virtual OUString SAL_CALL getAttributeNS(const OUString& namespaceURI, const OUString& localName) override;
+
+        /**
+        Returns a NodeList of all descendant Elements with a given tag name,
+        in the order in which they are
+        encountered in a preorder traversal of this Element tree.
+        */
+        virtual css::uno::Reference< css::xml::dom::XNodeList > SAL_CALL getElementsByTagName(const OUString& name) override;
+
+        /**
+        Returns a NodeList of all the descendant Elements with a given local
+        name and namespace URI in the order in which they are encountered in
+        a preorder traversal of this Element tree.
+        */
+        virtual css::uno::Reference< css::xml::dom::XNodeList > SAL_CALL getElementsByTagNameNS(const OUString& namespaceURI,
+                const OUString& localName) override;
+
+        /**
+        The name of the element.
+        */
+        virtual OUString SAL_CALL getTagName() override;
+
+        /**
+        Returns true when an attribute with a given name is specified on this
+        element or has a default value, false otherwise.
+        */
+        virtual sal_Bool SAL_CALL hasAttribute(const OUString& name) override;
+
+        /**
+        Returns true when an attribute with a given local name and namespace
+        URI is specified on this element or has a default value, false otherwise.
+        */
+        virtual sal_Bool SAL_CALL hasAttributeNS(const OUString& namespaceURI, const OUString& localName) override;
+
+        /**
+        Removes an attribute by name.
+        */
+        virtual void SAL_CALL removeAttribute(const OUString& name) override;
+
+        /**
+        Removes the specified attribute node.
+        */
+        virtual css::uno::Reference< css::xml::dom::XAttr > SAL_CALL removeAttributeNode(const css::uno::Reference< css::xml::dom::XAttr >& oldAttr) override;
+
+        /**
+        Removes an attribute by local name and namespace URI.
+        */
+        virtual void SAL_CALL removeAttributeNS(const OUString& namespaceURI, const OUString& localName) override;
+
+        /**
+        Adds a new attribute.
+        */
+        virtual void SAL_CALL setAttribute(const OUString& name, const OUString& value) override;
+
+        /**
+        Adds a new attribute node.
+        */
+        virtual css::uno::Reference< css::xml::dom::XAttr > SAL_CALL setAttributeNode(const css::uno::Reference< css::xml::dom::XAttr >& newAttr) override;
+
+        /**
+        Adds a new attribute.
+        */
+        virtual css::uno::Reference< css::xml::dom::XAttr > SAL_CALL setAttributeNodeNS(const css::uno::Reference< css::xml::dom::XAttr >& newAttr) override;
+
+        /**
+        Adds a new attribute.
+        */
+        virtual void SAL_CALL setAttributeNS(
+                const OUString& namespaceURI, const OUString& qualifiedName, const OUString& value) override;
+
+        // overrides for XNode base
+        virtual OUString SAL_CALL getNodeName() override;
+        virtual OUString SAL_CALL getNodeValue() override;
+        virtual css::uno::Reference< css::xml::dom::XNamedNodeMap > SAL_CALL getAttributes() override;
+        virtual OUString SAL_CALL getLocalName() override;
+
+        // resolve uno inheritance problems...
+        // --- delegation for XNode base.
+        virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL appendChild(const css::uno::Reference< css::xml::dom::XNode >& newChild) override
+        {
+            return CNode::appendChild(newChild);
+        }
+        virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL cloneNode(sal_Bool deep) override
+        {
+            return CNode::cloneNode(deep);
+        }
+        virtual css::uno::Reference< css::xml::dom::XNodeList > SAL_CALL getChildNodes() override
+        {
+            return CNode::getChildNodes();
+        }
+        virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL getFirstChild() override
+        {
+            return CNode::getFirstChild();
+        }
+        virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL getLastChild() override
+        {
+            return CNode::getLastChild();
+        }
+        virtual OUString SAL_CALL getNamespaceURI() override
+        {
+            return CNode::getNamespaceURI();
+        }
+        virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL getNextSibling() override
+        {
+            return CNode::getNextSibling();
+        }
+        virtual css::xml::dom::NodeType SAL_CALL getNodeType() override
+        {
+            return CNode::getNodeType();
+        }
+        virtual css::uno::Reference< css::xml::dom::XDocument > SAL_CALL getOwnerDocument() override
+        {
+            return CNode::getOwnerDocument();
+        }
+        virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL getParentNode() override
+        {
+            return CNode::getParentNode();
+        }
+        virtual OUString SAL_CALL getPrefix() override
+        {
+            return CNode::getPrefix();
+        }
+        virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL getPreviousSibling() override
+        {
+            return CNode::getPreviousSibling();
+        }
+        virtual sal_Bool SAL_CALL hasAttributes() override
+        {
+            return CNode::hasAttributes();
+        }
+        virtual sal_Bool SAL_CALL hasChildNodes() override
+        {
+            return CNode::hasChildNodes();
+        }
+        virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL insertBefore(
+                const css::uno::Reference< css::xml::dom::XNode >& newChild, const css::uno::Reference< css::xml::dom::XNode >& refChild) override
+        {
+            return CNode::insertBefore(newChild, refChild);
+        }
+        virtual sal_Bool SAL_CALL isSupported(const OUString& feature, const OUString& ver) override
+        {
+            return CNode::isSupported(feature, ver);
+        }
+        virtual void SAL_CALL normalize() override
+        {
+            CNode::normalize();
+        }
+        virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL removeChild(const css::uno::Reference< css::xml::dom::XNode >& oldChild) override
+        {
+            return CNode::removeChild(oldChild);
+        }
+        virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL replaceChild(
+                const css::uno::Reference< css::xml::dom::XNode >& newChild, const css::uno::Reference< css::xml::dom::XNode >& oldChild) override
+        {
+            return CNode::replaceChild(newChild, oldChild);
+        }
+        virtual void SAL_CALL setNodeValue(const OUString& nodeValue) override
+        {
+            return CNode::setNodeValue(nodeValue);
+        }
+        virtual void SAL_CALL setPrefix(const OUString& prefix) override
+        {
+            return CNode::setPrefix(prefix);
+        }
+
+    };
+
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/unoxml/source/dom/elementlist.cxx b/unoxml/source/dom/elementlist.cxx
new file mode 100644
index 0000000000..275b7adb87
--- /dev/null
+++ b/unoxml/source/dom/elementlist.cxx
@@ -0,0 +1,192 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include "elementlist.hxx"
+
+#include <string.h>
+#include <string_view>
+
+#include <cppuhelper/implbase.hxx>
+#include <o3tl/safeint.hxx>
+#include <utility>
+#include <comphelper/diagnose_ex.hxx>
+
+#include "element.hxx"
+#include "document.hxx"
+
+using namespace css::uno;
+using namespace css::xml::dom;
+using namespace css::xml::dom::events;
+
+namespace
+{
+    class WeakEventListener : public ::cppu::WeakImplHelper<css::xml::dom::events::XEventListener>
+    {
+    private:
+        css::uno::WeakReference<css::xml::dom::events::XEventListener> mxOwner;
+
+    public:
+        explicit WeakEventListener(const css::uno::Reference<css::xml::dom::events::XEventListener>& rOwner)
+            : mxOwner(rOwner)
+        {
+        }
+
+        virtual void SAL_CALL handleEvent(const css::uno::Reference<css::xml::dom::events::XEvent>& rEvent) override
+        {
+            css::uno::Reference<css::xml::dom::events::XEventListener> xOwner(mxOwner.get(),
+                css::uno::UNO_QUERY);
+            if (xOwner.is())
+                xOwner->handleEvent(rEvent);
+        }
+    };
+}
+
+namespace DOM
+{
+
+    static xmlChar* lcl_initXmlString(std::u16string_view rString)
+    {
+        OString const os =
+            OUStringToOString(rString, RTL_TEXTENCODING_UTF8);
+        xmlChar *const pRet = new xmlChar[os.getLength() + 1];
+        strcpy(reinterpret_cast<char*>(pRet), os.getStr());
+        return pRet;
+    }
+
+    CElementList::CElementList(::rtl::Reference<CElement> const& pElement,
+            ::osl::Mutex & rMutex,
+            std::u16string_view rName, OUString const*const pURI)
+        : m_xImpl(new CElementListImpl(pElement, rMutex, rName, pURI))
+    {
+        if (pElement.is()) {
+            m_xImpl->registerListener(*pElement);
+        }
+    }
+
+    CElementListImpl::CElementListImpl(::rtl::Reference<CElement> pElement,
+            ::osl::Mutex & rMutex,
+            std::u16string_view rName, OUString const*const pURI)
+        : m_pElement(std::move(pElement))
+        , m_rMutex(rMutex)
+        , m_pName(lcl_initXmlString(rName))
+        , m_pURI(pURI ? lcl_initXmlString(*pURI) : nullptr)
+        , m_bRebuild(true)
+    {
+    }
+
+    CElementListImpl::~CElementListImpl()
+    {
+        if (m_xEventListener.is() && m_pElement.is())
+        {
+            Reference< XEventTarget > xTarget = m_pElement;
+            assert(xTarget.is());
+            if (!xTarget.is())
+                return;
+            xTarget->removeEventListener("DOMSubtreeModified", m_xEventListener, false/*capture*/);
+        }
+    }
+
+    void CElementListImpl::registerListener(CElement & rElement)
+    {
+        try {
+            Reference< XEventTarget > const xTarget(
+                    static_cast<XElement*>(& rElement), UNO_QUERY_THROW);
+            m_xEventListener = new WeakEventListener(this);
+            xTarget->addEventListener("DOMSubtreeModified", m_xEventListener, false/*capture*/);
+        } catch (const Exception &){
+            TOOLS_WARN_EXCEPTION( "unoxml", "Exception caught while registering NodeList as listener");
+        }
+    }
+
+    void CElementListImpl::buildlist(xmlNodePtr pNode, bool start)
+    {
+        // bail out if no rebuild is needed
+        if (start) {
+            if (!m_bRebuild)
+            {
+                return;
+            } else {
+                m_nodevector.clear();
+                m_bRebuild = false; // don't rebuild until tree is mutated
+            }
+        }
+
+        while (pNode != nullptr )
+        {
+            if (pNode->type == XML_ELEMENT_NODE &&
+                (strcmp(reinterpret_cast<char const *>(pNode->name), reinterpret_cast<char*>(m_pName.get())) == 0))
+            {
+                if (!m_pURI) {
+                    m_nodevector.push_back(pNode);
+                } else {
+                    if (pNode->ns != nullptr && (0 ==
+                         strcmp(reinterpret_cast<char const *>(pNode->ns->href), reinterpret_cast<char*>(m_pURI.get()))))
+                    {
+                        m_nodevector.push_back(pNode);
+                    }
+                }
+            }
+            if (pNode->children != nullptr) buildlist(pNode->children, false);
+
+            if (!start) pNode = pNode->next;
+            else break; // fold back
+        }
+    }
+
+    /**
+    The number of nodes in the list.
+    */
+    sal_Int32 SAL_CALL CElementListImpl::getLength()
+    {
+        ::osl::MutexGuard const g(m_rMutex);
+
+        if (!m_pElement.is()) { return 0; }
+
+        // this has to be 'live'
+        buildlist(m_pElement->GetNodePtr());
+        return m_nodevector.size();
+    }
+    /**
+    Returns the indexth item in the collection.
+    */
+    Reference< XNode > SAL_CALL CElementListImpl::item(sal_Int32 index)
+    {
+        if (index < 0) throw RuntimeException();
+
+        ::osl::MutexGuard const g(m_rMutex);
+
+        if (!m_pElement.is()) { return nullptr; }
+
+        buildlist(m_pElement->GetNodePtr());
+        if (m_nodevector.size() <= o3tl::make_unsigned(index)) {
+            throw RuntimeException();
+        }
+        return m_pElement->GetOwnerDocument().GetCNode(m_nodevector[index]);
+    }
+
+    // tree mutations can change the list
+    void SAL_CALL CElementListImpl::handleEvent(Reference< XEvent > const&)
+    {
+        ::osl::MutexGuard const g(m_rMutex);
+
+        m_bRebuild = true;
+    }
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/unoxml/source/dom/elementlist.hxx b/unoxml/source/dom/elementlist.hxx
new file mode 100644
index 0000000000..0925292821
--- /dev/null
+++ b/unoxml/source/dom/elementlist.hxx
@@ -0,0 +1,118 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#pragma once
+
+#include <vector>
+#include <string_view>
+#include <memory>
+
+#include <libxml/tree.h>
+
+#include <sal/types.h>
+#include <rtl/ref.hxx>
+
+#include <com/sun/star/uno/Reference.h>
+#include <com/sun/star/xml/dom/XNode.hpp>
+#include <com/sun/star/xml/dom/XNodeList.hpp>
+#include <com/sun/star/xml/dom/events/XEvent.hpp>
+#include <com/sun/star/xml/dom/events/XEventListener.hpp>
+
+#include <cppuhelper/implbase.hxx>
+
+namespace DOM
+{
+    class CElement;
+
+    class CElementListImpl
+        : public cppu::WeakImplHelper< css::xml::dom::XNodeList,
+                css::xml::dom::events::XEventListener >
+    {
+    private:
+        /** @short  proxy weak binding to forward Events to ourself without
+                    an ownership cycle
+          */
+        css::uno::Reference< css::xml::dom::events::XEventListener > m_xEventListener;
+
+        ::rtl::Reference<CElement> const m_pElement;
+        ::osl::Mutex & m_rMutex;
+        ::std::unique_ptr<xmlChar[]> const m_pName;
+        ::std::unique_ptr<xmlChar[]> const m_pURI;
+        bool m_bRebuild;
+        std::vector< xmlNodePtr > m_nodevector;
+
+        void buildlist(xmlNodePtr pNode, bool start=true);
+
+    public:
+        CElementListImpl(::rtl::Reference<CElement> pElement,
+                ::osl::Mutex & rMutex,
+                std::u16string_view rName, OUString const*const pURI);
+
+        void registerListener(CElement & rElement);
+
+        virtual ~CElementListImpl() override;
+
+        /**
+        The number of nodes in the list.
+        */
+        virtual sal_Int32 SAL_CALL getLength() override;
+        /**
+        Returns the indexth item in the collection.
+        */
+        virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL item(sal_Int32 index) override;
+
+        // XEventListener
+        virtual void SAL_CALL handleEvent(const css::uno::Reference< css::xml::dom::events::XEvent >& evt) override;
+    };
+
+    class CElementList
+        : public cppu::WeakImplHelper< css::xml::dom::XNodeList,
+                css::xml::dom::events::XEventListener >
+    {
+    private:
+        rtl::Reference<CElementListImpl> m_xImpl;
+    public:
+        CElementList(::rtl::Reference<CElement> const& pElement,
+                ::osl::Mutex & rMutex,
+                std::u16string_view rName, OUString const*const pURI = nullptr);
+
+        /**
+        The number of nodes in the list.
+        */
+        virtual sal_Int32 SAL_CALL getLength() override
+        {
+            return m_xImpl->getLength();
+        }
+        /**
+        Returns the indexth item in the collection.
+        */
+        virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL item(sal_Int32 index) override
+        {
+            return m_xImpl->item(index);
+        }
+
+        // XEventListener
+        virtual void SAL_CALL handleEvent(const css::uno::Reference< css::xml::dom::events::XEvent >& evt) override
+        {
+            m_xImpl->handleEvent(evt);
+        }
+    };
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/unoxml/source/dom/entitiesmap.cxx b/unoxml/source/dom/entitiesmap.cxx
new file mode 100644
index 0000000000..d5c65e7c2d
--- /dev/null
+++ b/unoxml/source/dom/entitiesmap.cxx
@@ -0,0 +1,122 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include "entitiesmap.hxx"
+
+#include <osl/diagnose.h>
+
+using namespace css::uno;
+using namespace css::xml::dom;
+
+namespace DOM
+{
+    CEntitiesMap::CEntitiesMap()
+    {
+    }
+
+    /**
+    The number of nodes in this map.
+    */
+    sal_Int32 SAL_CALL CEntitiesMap::getLength()
+    {
+        OSL_ENSURE(false,
+            "CEntitiesMap::getLength: not implemented (#i113683#)");
+        return 0;
+    }
+
+    /**
+    Retrieves a node specified by local name
+    */
+    Reference< XNode > SAL_CALL
+    CEntitiesMap::getNamedItem(OUString const& /*name*/)
+    {
+        OSL_ENSURE(false,
+            "CEntitiesMap::getNamedItem: not implemented (#i113683#)");
+        return Reference< XNode >();
+    }
+
+    /**
+    Retrieves a node specified by local name and namespace URI.
+    */
+    Reference< XNode > SAL_CALL
+    CEntitiesMap::getNamedItemNS(
+        OUString const& /*namespaceURI*/, OUString const& /*localName*/)
+    {
+        OSL_ENSURE(false,
+            "CEntitiesMap::getNamedItemNS: not implemented (#i113683#)");
+        return Reference< XNode >();
+    }
+
+    /**
+    Returns the indexth item in the map.
+    */
+    Reference< XNode > SAL_CALL
+    CEntitiesMap::item(sal_Int32 /*index*/)
+    {
+        OSL_ENSURE(false, "CEntitiesMap::item: not implemented (#i113683#)");
+        return Reference< XNode >();
+    }
+
+    /**
+    Removes a node specified by name.
+    */
+    Reference< XNode > SAL_CALL
+    CEntitiesMap::removeNamedItem(OUString const& /*name*/)
+    {
+        OSL_ENSURE(false,
+            "CEntitiesMap::removeNamedItem: not implemented (#i113683#)");
+        return Reference< XNode >();
+    }
+
+    /**
+    // Removes a node specified by local name and namespace URI.
+    */
+    Reference< XNode > SAL_CALL
+    CEntitiesMap::removeNamedItemNS(
+        OUString const& /*namespaceURI*/, OUString const& /*localName*/)
+    {
+        OSL_ENSURE(false,
+            "CEntitiesMap::removeNamedItemNS: not implemented (#i113683#)");
+        return Reference< XNode >();
+    }
+
+    /**
+    // Adds a node using its nodeName attribute.
+    */
+    Reference< XNode > SAL_CALL
+    CEntitiesMap::setNamedItem(Reference< XNode > const& /*arg*/)
+    {
+        OSL_ENSURE(false,
+            "CEntitiesMap::setNamedItem: not implemented (#i113683#)");
+        return Reference< XNode >();
+    }
+
+    /**
+    Adds a node using its namespaceURI and localName.
+    */
+    Reference< XNode > SAL_CALL
+    CEntitiesMap::setNamedItemNS(Reference< XNode > const& /*arg*/)
+    {
+        OSL_ENSURE(false,
+            "CEntitiesMap::setNamedItemNS: not implemented (#i113683#)");
+        return Reference< XNode >();
+    }
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/unoxml/source/dom/entitiesmap.hxx b/unoxml/source/dom/entitiesmap.hxx
new file mode 100644
index 0000000000..7349851ddb
--- /dev/null
+++ b/unoxml/source/dom/entitiesmap.hxx
@@ -0,0 +1,89 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#pragma once
+
+#include <sal/types.h>
+
+#include <com/sun/star/uno/Reference.h>
+#include <com/sun/star/xml/dom/XNode.hpp>
+#include <com/sun/star/xml/dom/XNamedNodeMap.hpp>
+
+#include <cppuhelper/implbase.hxx>
+
+namespace DOM
+{
+    class CDocumentType;
+
+    class CEntitiesMap
+        : public cppu::WeakImplHelper< css::xml::dom::XNamedNodeMap >
+    {
+    public:
+        CEntitiesMap();
+
+        /**
+        The number of nodes in this map.
+        */
+        virtual sal_Int32 SAL_CALL getLength() override;
+
+        /**
+        Retrieves a node specified by local name
+        */
+        virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL
+            getNamedItem(const OUString& name) override;
+
+        /**
+        Retrieves a node specified by local name and namespace URI.
+        */
+        virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL getNamedItemNS(
+                OUString const& namespaceURI, OUString const& localName) override;
+
+        /**
+        Returns the indexth item in the map.
+        */
+        virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL
+            item(sal_Int32 index) override;
+
+        /**
+        Removes a node specified by name.
+        */
+        virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL
+            removeNamedItem(OUString const& name) override;
+
+        /**
+        // Removes a node specified by local name and namespace URI.
+        */
+        virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL removeNamedItemNS(
+                OUString const& namespaceURI, OUString const& localName) override;
+
+        /**
+        // Adds a node using its nodeName attribute.
+        */
+        virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL
+            setNamedItem(css::uno::Reference< css::xml::dom::XNode > const& arg) override;
+
+        /**
+        Adds a node using its namespaceURI and localName.
+        */
+        virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL
+            setNamedItemNS(css::uno::Reference< css::xml::dom::XNode > const& arg) override;
+    };
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/unoxml/source/dom/entity.cxx b/unoxml/source/dom/entity.cxx
new file mode 100644
index 0000000000..98909dfe8f
--- /dev/null
+++ b/unoxml/source/dom/entity.cxx
@@ -0,0 +1,113 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include "entity.hxx"
+
+#include <osl/diagnose.h>
+
+#include <string.h>
+#include <libxml/entities.h>
+
+using namespace css::uno;
+using namespace css::xml::dom;
+
+namespace DOM
+{
+
+    CEntity::CEntity(CDocument const& rDocument, ::osl::Mutex const& rMutex,
+            xmlEntityPtr const pEntity)
+        : CEntity_Base(rDocument, rMutex,
+            NodeType_ENTITY_NODE, reinterpret_cast<xmlNodePtr>(pEntity))
+        , m_aEntityPtr(pEntity)
+    {
+    }
+
+    bool CEntity::IsChildTypeAllowed(NodeType const nodeType, NodeType const*const)
+    {
+        switch (nodeType) {
+            case NodeType_ELEMENT_NODE:
+            case NodeType_PROCESSING_INSTRUCTION_NODE:
+            case NodeType_COMMENT_NODE:
+            case NodeType_TEXT_NODE:
+            case NodeType_CDATA_SECTION_NODE:
+            case NodeType_ENTITY_REFERENCE_NODE:
+                return true;
+            default:
+                return false;
+        }
+    }
+
+    /**
+    For unparsed entities, the name of the notation for the entity.
+    */
+    OUString SAL_CALL CEntity::getNotationName()
+    {
+        OSL_ENSURE(false,
+                "CEntity::getNotationName: not implemented (#i113683#)");
+        return OUString();
+    }
+
+    /**
+    The public identifier associated with the entity, if specified.
+    */
+    OUString SAL_CALL CEntity::getPublicId()
+    {
+        ::osl::MutexGuard const g(m_rMutex);
+
+        OUString aID;
+        if(m_aEntityPtr != nullptr)
+        {
+            aID = OUString(reinterpret_cast<char const *>(m_aEntityPtr->ExternalID), strlen(reinterpret_cast<char const *>(m_aEntityPtr->ExternalID)), RTL_TEXTENCODING_UTF8);
+        }
+        return aID;
+    }
+
+    /**
+    The system identifier associated with the entity, if specified.
+    */
+    OUString SAL_CALL CEntity::getSystemId()
+    {
+        ::osl::MutexGuard const g(m_rMutex);
+
+        OUString aID;
+        if(m_aEntityPtr != nullptr)
+        {
+            aID = OUString(reinterpret_cast<char const *>(m_aEntityPtr->SystemID), strlen(reinterpret_cast<char const *>(m_aEntityPtr->SystemID)), RTL_TEXTENCODING_UTF8);
+        }
+        return aID;
+    }
+    OUString SAL_CALL CEntity::getNodeName()
+    {
+        ::osl::MutexGuard const g(m_rMutex);
+
+        OUString aName;
+        if (m_aNodePtr != nullptr)
+        {
+            const xmlChar* pName = m_aNodePtr->name;
+            aName = OUString(reinterpret_cast<char const *>(pName), strlen(reinterpret_cast<char const *>(pName)), RTL_TEXTENCODING_UTF8);
+        }
+        return aName;
+    }
+    OUString SAL_CALL CEntity::getNodeValue()
+    {
+        return OUString();
+    }
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/unoxml/source/dom/entity.hxx b/unoxml/source/dom/entity.hxx
new file mode 100644
index 0000000000..2668adb687
--- /dev/null
+++ b/unoxml/source/dom/entity.hxx
@@ -0,0 +1,170 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#pragma once
+
+#include <libxml/tree.h>
+
+#include <sal/types.h>
+
+#include <com/sun/star/uno/Reference.h>
+#include <com/sun/star/xml/dom/XEntity.hpp>
+
+#include <cppuhelper/implbase.hxx>
+#include <node.hxx>
+
+namespace DOM
+{
+    typedef ::cppu::ImplInheritanceHelper< CNode, css::xml::dom::XEntity > CEntity_Base;
+
+    class CEntity
+        : public CEntity_Base
+    {
+    private:
+        friend class CDocument;
+
+        xmlEntityPtr m_aEntityPtr;
+
+        CEntity(CDocument const& rDocument, ::osl::Mutex const& rMutex,
+                xmlEntityPtr const pEntity);
+
+    public:
+        virtual bool IsChildTypeAllowed(css::xml::dom::NodeType const nodeType,
+                        css::xml::dom::NodeType const*) override;
+
+        /**
+        For unparsed entities, the name of the notation for the entity.
+        */
+        virtual OUString SAL_CALL getNotationName() override;
+
+        /**
+        The public identifier associated with the entity, if specified.
+        */
+        virtual OUString SAL_CALL getPublicId() override;
+
+        /**
+        The system identifier associated with the entity, if specified.
+        */
+        virtual OUString SAL_CALL getSystemId() override;
+
+        // ---- resolve uno inheritance problems...
+        // overrides for XNode base
+        virtual OUString SAL_CALL getNodeName() override;
+        virtual OUString SAL_CALL getNodeValue() override;
+    // --- delegation for XNode base.
+    virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL appendChild(const css::uno::Reference< css::xml::dom::XNode >& newChild) override
+    {
+        return CNode::appendChild(newChild);
+    }
+    virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL cloneNode(sal_Bool deep) override
+    {
+        return CNode::cloneNode(deep);
+    }
+    virtual css::uno::Reference< css::xml::dom::XNamedNodeMap > SAL_CALL getAttributes() override
+    {
+        return CNode::getAttributes();
+    }
+    virtual css::uno::Reference< css::xml::dom::XNodeList > SAL_CALL getChildNodes() override
+    {
+        return CNode::getChildNodes();
+    }
+    virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL getFirstChild() override
+    {
+        return CNode::getFirstChild();
+    }
+    virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL getLastChild() override
+    {
+        return CNode::getLastChild();
+    }
+    virtual OUString SAL_CALL getLocalName() override
+    {
+        return CNode::getLocalName();
+    }
+    virtual OUString SAL_CALL getNamespaceURI() override
+    {
+        return CNode::getNamespaceURI();
+    }
+    virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL getNextSibling() override
+    {
+        return CNode::getNextSibling();
+    }
+    virtual css::xml::dom::NodeType SAL_CALL getNodeType() override
+    {
+        return CNode::getNodeType();
+    }
+    virtual css::uno::Reference< css::xml::dom::XDocument > SAL_CALL getOwnerDocument() override
+    {
+        return CNode::getOwnerDocument();
+    }
+    virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL getParentNode() override
+    {
+        return CNode::getParentNode();
+    }
+    virtual OUString SAL_CALL getPrefix() override
+    {
+        return CNode::getPrefix();
+    }
+    virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL getPreviousSibling() override
+    {
+        return CNode::getPreviousSibling();
+    }
+    virtual sal_Bool SAL_CALL hasAttributes() override
+    {
+        return CNode::hasAttributes();
+    }
+    virtual sal_Bool SAL_CALL hasChildNodes() override
+    {
+        return CNode::hasChildNodes();
+    }
+    virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL insertBefore(
+            const css::uno::Reference< css::xml::dom::XNode >& newChild, const css::uno::Reference< css::xml::dom::XNode >& refChild) override
+    {
+        return CNode::insertBefore(newChild, refChild);
+    }
+    virtual sal_Bool SAL_CALL isSupported(const OUString& feature, const OUString& ver) override
+    {
+        return CNode::isSupported(feature, ver);
+    }
+    virtual void SAL_CALL normalize() override
+    {
+        CNode::normalize();
+    }
+    virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL removeChild(const css::uno::Reference< css::xml::dom::XNode >& oldChild) override
+    {
+        return CNode::removeChild(oldChild);
+    }
+    virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL replaceChild(
+            const css::uno::Reference< css::xml::dom::XNode >& newChild, const css::uno::Reference< css::xml::dom::XNode >& oldChild) override
+    {
+        return CNode::replaceChild(newChild, oldChild);
+    }
+    virtual void SAL_CALL setNodeValue(const OUString& nodeValue) override
+    {
+        return CNode::setNodeValue(nodeValue);
+    }
+    virtual void SAL_CALL setPrefix(const OUString& prefix) override
+    {
+        return CNode::setPrefix(prefix);
+    }
+
+
+    };
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/unoxml/source/dom/entityreference.cxx b/unoxml/source/dom/entityreference.cxx
new file mode 100644
index 0000000000..a3a06a2381
--- /dev/null
+++ b/unoxml/source/dom/entityreference.cxx
@@ -0,0 +1,71 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include "entityreference.hxx"
+
+#include <string.h>
+
+using namespace css::uno;
+using namespace css::xml::dom;
+
+namespace DOM
+{
+    CEntityReference::CEntityReference(
+            CDocument const& rDocument, ::osl::Mutex const& rMutex,
+            xmlNodePtr const pNode)
+        : CEntityReference_Base(rDocument, rMutex,
+                NodeType_ENTITY_REFERENCE_NODE, pNode)
+    {
+    }
+
+    bool CEntityReference::IsChildTypeAllowed(NodeType const nodeType, NodeType const*const)
+    {
+        switch (nodeType) {
+            case NodeType_ELEMENT_NODE:
+            case NodeType_PROCESSING_INSTRUCTION_NODE:
+            case NodeType_COMMENT_NODE:
+            case NodeType_TEXT_NODE:
+            case NodeType_CDATA_SECTION_NODE:
+            case NodeType_ENTITY_REFERENCE_NODE:
+                return true;
+            default:
+                return false;
+        }
+    }
+
+    OUString SAL_CALL CEntityReference::getNodeName()
+    {
+        ::osl::MutexGuard const g(m_rMutex);
+
+        OUString aName;
+        if (m_aNodePtr != nullptr)
+        {
+            const xmlChar* pName = m_aNodePtr->name;
+            aName = OUString(reinterpret_cast<char const *>(pName), strlen(reinterpret_cast<char const *>(pName)), RTL_TEXTENCODING_UTF8);
+        }
+        return aName;
+    }
+
+    OUString SAL_CALL CEntityReference::getNodeValue()
+    {
+        return OUString();
+    }
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/unoxml/source/dom/entityreference.hxx b/unoxml/source/dom/entityreference.hxx
new file mode 100644
index 0000000000..2ed9f568b7
--- /dev/null
+++ b/unoxml/source/dom/entityreference.hxx
@@ -0,0 +1,152 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#pragma once
+
+#include <libxml/tree.h>
+
+#include <com/sun/star/uno/Reference.h>
+#include <com/sun/star/xml/dom/XEntityReference.hpp>
+
+#include <cppuhelper/implbase.hxx>
+#include <node.hxx>
+
+namespace DOM
+{
+    typedef ::cppu::ImplInheritanceHelper< CNode, css::xml::dom::XEntityReference >
+        CEntityReference_Base;
+
+    class CEntityReference
+        : public CEntityReference_Base
+    {
+    private:
+        friend class CDocument;
+
+        CEntityReference(
+            CDocument const& rDocument, ::osl::Mutex const& rMutex,
+            xmlNodePtr const pNode);
+
+    public:
+        virtual bool IsChildTypeAllowed(css::xml::dom::NodeType const nodeType,
+                        css::xml::dom::NodeType const*) override;
+
+        // ---- resolve uno inheritance problems...
+        // overrides for XNode base
+        virtual OUString SAL_CALL getNodeName() override;
+        virtual OUString SAL_CALL getNodeValue() override;
+    // --- delegation for XNode base.
+    virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL appendChild(const css::uno::Reference< css::xml::dom::XNode >& newChild) override
+    {
+        return CNode::appendChild(newChild);
+    }
+    virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL cloneNode(sal_Bool deep) override
+    {
+        return CNode::cloneNode(deep);
+    }
+    virtual css::uno::Reference< css::xml::dom::XNamedNodeMap > SAL_CALL getAttributes() override
+    {
+        return CNode::getAttributes();
+    }
+    virtual css::uno::Reference< css::xml::dom::XNodeList > SAL_CALL getChildNodes() override
+    {
+        return CNode::getChildNodes();
+    }
+    virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL getFirstChild() override
+    {
+        return CNode::getFirstChild();
+    }
+    virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL getLastChild() override
+    {
+        return CNode::getLastChild();
+    }
+    virtual OUString SAL_CALL getLocalName() override
+    {
+        return CNode::getLocalName();
+    }
+    virtual OUString SAL_CALL getNamespaceURI() override
+    {
+        return CNode::getNamespaceURI();
+    }
+    virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL getNextSibling() override
+    {
+        return CNode::getNextSibling();
+    }
+    virtual css::xml::dom::NodeType SAL_CALL getNodeType() override
+    {
+        return CNode::getNodeType();
+    }
+    virtual css::uno::Reference< css::xml::dom::XDocument > SAL_CALL getOwnerDocument() override
+    {
+        return CNode::getOwnerDocument();
+    }
+    virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL getParentNode() override
+    {
+        return CNode::getParentNode();
+    }
+    virtual OUString SAL_CALL getPrefix() override
+    {
+        return CNode::getPrefix();
+    }
+    virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL getPreviousSibling() override
+    {
+        return CNode::getPreviousSibling();
+    }
+    virtual sal_Bool SAL_CALL hasAttributes() override
+    {
+        return CNode::hasAttributes();
+    }
+    virtual sal_Bool SAL_CALL hasChildNodes() override
+    {
+        return CNode::hasChildNodes();
+    }
+    virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL insertBefore(
+            const css::uno::Reference< css::xml::dom::XNode >& newChild, const css::uno::Reference< css::xml::dom::XNode >& refChild) override
+    {
+        return CNode::insertBefore(newChild, refChild);
+    }
+    virtual sal_Bool SAL_CALL isSupported(const OUString& feature, const OUString& ver) override
+    {
+        return CNode::isSupported(feature, ver);
+    }
+    virtual void SAL_CALL normalize() override
+    {
+        CNode::normalize();
+    }
+    virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL removeChild(const css::uno::Reference< css::xml::dom::XNode >& oldChild) override
+    {
+        return CNode::removeChild(oldChild);
+    }
+    virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL replaceChild(
+            const css::uno::Reference< css::xml::dom::XNode >& newChild, const css::uno::Reference< css::xml::dom::XNode >& oldChild) override
+    {
+        return CNode::replaceChild(newChild, oldChild);
+    }
+    virtual void SAL_CALL setNodeValue(const OUString& nodeValue) override
+    {
+        return CNode::setNodeValue(nodeValue);
+    }
+    virtual void SAL_CALL setPrefix(const OUString& prefix) override
+    {
+        return CNode::setPrefix(prefix);
+    }
+
+    };
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/unoxml/source/dom/node.cxx b/unoxml/source/dom/node.cxx
new file mode 100644
index 0000000000..2e3f56c689
--- /dev/null
+++ b/unoxml/source/dom/node.cxx
@@ -0,0 +1,973 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <node.hxx>
+
+#include <string.h>
+
+#include <libxml/xmlstring.h>
+
+#include <algorithm>
+
+#include <osl/mutex.hxx>
+#include <osl/diagnose.h>
+#include <sal/log.hxx>
+
+#include <com/sun/star/xml/dom/DOMException.hpp>
+#include <com/sun/star/xml/dom/events/XMutationEvent.hpp>
+#include <com/sun/star/xml/sax/FastToken.hpp>
+
+#include <comphelper/servicehelper.hxx>
+
+#include "document.hxx"
+#include "attr.hxx"
+#include "childlist.hxx"
+
+#include <eventdispatcher.hxx>
+
+using namespace css;
+using namespace css::uno;
+using namespace css::xml::dom;
+using namespace css::xml::dom::events;
+using namespace css::xml::sax;
+
+namespace DOM
+{
+    void pushContext(Context& io_rContext)
+    {
+        // Explicitly use a temp. variable.
+        // Windows/VC++ seems to mess up if .back() is directly passed as
+        // parameter. i.e. Don't use push_back( .back() );
+        Context::NamespaceVectorType::value_type aVal = io_rContext.maNamespaces.back();
+        io_rContext.maNamespaces.push_back( aVal );
+    }
+
+    void popContext(Context& io_rContext)
+    {
+        io_rContext.maNamespaces.pop_back();
+    }
+
+    void addNamespaces(Context& io_rContext, xmlNodePtr pNode)
+    {
+        // add node's namespaces to current context
+        for (xmlNsPtr pNs = pNode->nsDef; pNs != nullptr; pNs = pNs->next) {
+            const xmlChar *pPrefix = pNs->prefix;
+            // prefix can be NULL when xmlns attribute is empty (xmlns="")
+            OString prefix(reinterpret_cast<const char*>(pPrefix),
+                           pPrefix ? strlen(reinterpret_cast<const char*>(pPrefix)) : 0);
+            const xmlChar *pHref = pNs->href;
+            OUString val(reinterpret_cast<const char*>(pHref),
+                strlen(reinterpret_cast<const char*>(pHref)),
+                RTL_TEXTENCODING_UTF8);
+
+            Context::NamespaceMapType::iterator aIter=
+                io_rContext.maNamespaceMap.find(val);
+            if( aIter != io_rContext.maNamespaceMap.end() )
+            {
+                Context::Namespace aNS;
+                aNS.maPrefix = prefix;
+                aNS.mnToken = aIter->second;
+
+                io_rContext.maNamespaces.back().push_back(aNS);
+
+                SAL_INFO("unoxml", "Added with token " << aIter->second);
+            }
+        }
+    }
+
+    sal_Int32 getToken( const Context& rContext, const char* pToken )
+    {
+        const Sequence<sal_Int8> aSeq( reinterpret_cast<sal_Int8 const *>(pToken), strlen( pToken ) );
+        return rContext.mxTokenHandler->getTokenFromUTF8( aSeq );
+    }
+
+    sal_Int32 getTokenWithPrefix( const Context& rContext, const char* pPrefix, const char* pName )
+    {
+        sal_Int32 nNamespaceToken = FastToken::DONTKNOW;
+        OString prefix(pPrefix,
+                       strlen(pPrefix));
+
+        SAL_INFO("unoxml", "getTokenWithPrefix(): prefix " << pPrefix << ", name " << pName);
+
+        Context::NamespaceVectorType::value_type::const_iterator aIter;
+        if( (aIter=std::find_if(rContext.maNamespaces.back().begin(),
+                                rContext.maNamespaces.back().end(),
+                                [&prefix](const Context::Namespace &aNamespace){ return aNamespace.getPrefix() == prefix; } )) !=
+                                            rContext.maNamespaces.back().end() )
+        {
+            nNamespaceToken = aIter->mnToken;
+            sal_Int32 nNameToken = getToken( rContext, pName );
+            if( nNameToken == FastToken::DONTKNOW )
+                nNamespaceToken = FastToken::DONTKNOW;
+            else
+                nNamespaceToken |= nNameToken;
+        }
+
+        return nNamespaceToken;
+    }
+
+
+    CNode::CNode(CDocument const& rDocument, ::osl::Mutex const& rMutex,
+                NodeType const& reNodeType, xmlNodePtr const& rpNode)
+        :   m_bUnlinked(false)
+        ,   m_aNodeType(reNodeType)
+        ,   m_aNodePtr(rpNode)
+        // keep containing document alive
+        // (but not if this is a document; that would create a leak!)
+        ,   m_xDocument( (m_aNodePtr->type != XML_DOCUMENT_NODE)
+                ? &const_cast<CDocument&>(rDocument) : nullptr )
+        ,   m_rMutex(const_cast< ::osl::Mutex & >(rMutex))
+    {
+        OSL_ASSERT(m_aNodePtr);
+    }
+
+    void CNode::invalidate()
+    {
+        //remove from list if this wrapper goes away
+        if (m_aNodePtr != nullptr && m_xDocument.is()) {
+            m_xDocument->RemoveCNode(m_aNodePtr, this);
+        }
+        // #i113663#: unlinked nodes will not be freed by xmlFreeDoc
+        if (m_bUnlinked) {
+            xmlFreeNode(m_aNodePtr);
+        }
+        m_aNodePtr = nullptr;
+    }
+
+    CNode::~CNode()
+    {
+        // if this is the document itself, the mutex is already freed!
+        if (NodeType_DOCUMENT_NODE == m_aNodeType) {
+            invalidate();
+        } else {
+            ::osl::MutexGuard const g(m_rMutex);
+            invalidate(); // other nodes are still alive so must lock mutex
+        }
+    }
+
+    CDocument & CNode::GetOwnerDocument()
+    {
+        OSL_ASSERT(m_xDocument.is());
+        return *m_xDocument; // needs overriding in CDocument!
+    }
+
+
+    static void lcl_nsexchange(
+            xmlNodePtr const aNode, xmlNsPtr const oldNs, xmlNsPtr const newNs)
+    {
+        // recursively exchange any references to oldNs with references to newNs
+        xmlNodePtr cur = aNode;
+        while (cur != nullptr)
+        {
+            if (cur->ns == oldNs)
+                cur->ns = newNs;
+            if (cur->type == XML_ELEMENT_NODE)
+            {
+                xmlAttrPtr curAttr = cur->properties;
+                while(curAttr != nullptr)
+                {
+                    if (curAttr->ns == oldNs)
+                        curAttr->ns = newNs;
+                    curAttr = curAttr->next;
+                }
+                lcl_nsexchange(cur->children, oldNs, newNs);
+            }
+            cur = cur->next;
+        }
+    }
+
+    /*static*/ void nscleanup(const xmlNodePtr aNode, const xmlNodePtr aParent)
+    {
+        xmlNodePtr cur = aNode;
+
+        //handle attributes
+        if (cur != nullptr && cur->type == XML_ELEMENT_NODE)
+        {
+            xmlAttrPtr curAttr = cur->properties;
+            while(curAttr != nullptr)
+            {
+                if (curAttr->ns != nullptr)
+                {
+                    xmlNsPtr ns = xmlSearchNs(cur->doc, aParent, curAttr->ns->prefix);
+                    if (ns != nullptr)
+                        curAttr->ns = ns;
+                }
+                curAttr = curAttr->next;
+            }
+        }
+
+        while (cur != nullptr)
+        {
+            nscleanup(cur->children, cur);
+            if (cur->ns != nullptr)
+            {
+                xmlNsPtr ns = xmlSearchNs(cur->doc, aParent, cur->ns->prefix);
+                if (ns != nullptr && ns != cur->ns && strcmp(reinterpret_cast<char const *>(ns->href), reinterpret_cast<char const *>(cur->ns->href))==0)
+                {
+                    xmlNsPtr curDef = cur->nsDef;
+                    xmlNsPtr *refp = &(cur->nsDef); // insert point
+                    while (curDef != nullptr)
+                    {
+                        ns = xmlSearchNs(cur->doc, aParent, curDef->prefix);
+                        if (ns != nullptr && ns != curDef && strcmp(reinterpret_cast<char const *>(ns->href), reinterpret_cast<char const *>(curDef->href))==0)
+                        {
+                            // reconnect ns pointers in sub-tree to newly found ns before
+                            // removing redundant nsdecl to prevent dangling pointers.
+                            lcl_nsexchange(cur, curDef, ns);
+                            *refp = curDef->next;
+                            xmlFreeNs(curDef);
+                            curDef = *refp;
+                        } else {
+                            refp = &(curDef->next);
+                            curDef = curDef->next;
+                        }
+                    }
+                }
+            }
+            cur = cur->next;
+        }
+    }
+
+    void CNode::saxify(const Reference< XDocumentHandler >& i_xHandler)
+    {
+        if (!i_xHandler.is()) throw RuntimeException();
+        // default: do nothing
+    }
+
+    void CNode::fastSaxify(Context& io_rContext)
+    {
+        if (!io_rContext.mxDocHandler.is()) throw RuntimeException();
+        // default: do nothing
+    }
+
+    bool CNode::IsChildTypeAllowed(NodeType const /*nodeType*/, NodeType const*const)
+    {
+        // default: no children allowed
+        return false;
+    }
+
+    void CNode::checkNoParent(Reference<XNode>const& xNode){
+        if (xNode->getParentNode() != Reference<XNode>(this)){
+            DOMException e;
+            e.Code = DOMExceptionType_HIERARCHY_REQUEST_ERR;
+            throw e;
+        }
+    }
+    void CNode::checkNoParent(const xmlNodePtr pNode){
+        if (pNode->parent != nullptr){
+            DOMException e;
+            e.Code = DOMExceptionType_HIERARCHY_REQUEST_ERR;
+            throw e;
+        }
+    }
+    void CNode::checkSameOwner(Reference<XNode>const& xNode){
+        if (xNode->getOwnerDocument() != getOwnerDocument()) {
+            DOMException e;
+            e.Code = DOMExceptionType_WRONG_DOCUMENT_ERR;
+            throw e;
+        }
+    }
+
+    /**
+    Adds the node newChild to the end of the list of children of this node.
+    */
+    Reference< XNode > SAL_CALL CNode::appendChild(
+            Reference< XNode > const& xNewChild)
+    {
+        ::osl::ClearableMutexGuard guard(m_rMutex);
+
+        if (nullptr == m_aNodePtr) { return nullptr; }
+
+        CNode *const pNewChild(dynamic_cast<CNode*>(xNewChild.get()));
+        if (!pNewChild) { throw RuntimeException(); }
+        xmlNodePtr const cur = pNewChild->GetNodePtr();
+        if (!cur) { throw RuntimeException(); }
+
+        // error checks:
+        // from other document
+        if (cur->doc != m_aNodePtr->doc) {
+            DOMException e;
+            e.Code = DOMExceptionType_WRONG_DOCUMENT_ERR;
+            throw e;
+        }
+        // same node
+        if (cur == m_aNodePtr) {
+            DOMException e;
+            e.Code = DOMExceptionType_HIERARCHY_REQUEST_ERR;
+            throw e;
+        }
+        checkNoParent(cur);
+
+        if (!IsChildTypeAllowed(pNewChild->m_aNodeType, nullptr)) {
+            DOMException e;
+            e.Code = DOMExceptionType_HIERARCHY_REQUEST_ERR;
+            throw e;
+        }
+
+        // check whether this is an attribute node; it needs special handling
+        xmlNodePtr res = nullptr;
+        if (cur->type == XML_ATTRIBUTE_NODE)
+        {
+            xmlChar const*const pChildren((cur->children)
+                    ? cur->children->content
+                    : reinterpret_cast<xmlChar const*>(""));
+            CAttr *const pCAttr(dynamic_cast<CAttr *>(pNewChild));
+            if (!pCAttr) { throw RuntimeException(); }
+            xmlNsPtr const pNs( pCAttr->GetNamespace(m_aNodePtr) );
+            if (pNs) {
+                res = reinterpret_cast<xmlNodePtr>(
+                        xmlNewNsProp(m_aNodePtr, pNs, cur->name, pChildren));
+            } else {
+                res = reinterpret_cast<xmlNodePtr>(
+                        xmlNewProp(m_aNodePtr, cur->name, pChildren));
+            }
+        }
+        else
+        {
+            res = xmlAddChild(m_aNodePtr, cur);
+
+            // libxml can do optimization when appending nodes.
+            // if res != cur, something was optimized and the newchild-wrapper
+            // should be updated
+            if (res && (cur != res)) {
+                pNewChild->invalidate(); // cur has been freed
+            }
+        }
+
+        if (!res) { return nullptr; }
+
+        // use custom ns cleanup instead of
+        // xmlReconciliateNs(m_aNodePtr->doc, m_aNodePtr);
+        // because that will not remove unneeded ns decls
+        nscleanup(res, m_aNodePtr);
+
+        ::rtl::Reference<CNode> const pNode = GetOwnerDocument().GetCNode(res);
+
+        if (!pNode.is()) { return nullptr; }
+
+        // dispatch DOMNodeInserted event, target is the new node
+        // this node is the related node
+        // does bubble
+        pNode->m_bUnlinked = false; // will be deleted by xmlFreeDoc
+        Reference< XDocumentEvent > docevent(getOwnerDocument(), UNO_QUERY);
+        Reference< XMutationEvent > event(docevent->createEvent(
+            "DOMNodeInserted"), UNO_QUERY);
+        event->initMutationEvent("DOMNodeInserted", true, false, this,
+            OUString(), OUString(), OUString(), AttrChangeType(0) );
+
+        // the following dispatch functions use only UNO interfaces
+        // and call event listeners, so release mutex to prevent deadlocks.
+        guard.clear();
+
+        dispatchEvent(event);
+        // dispatch subtree modified for this node
+        dispatchSubtreeModified();
+
+        return pNode;
+    }
+
+    /**
+    Returns a duplicate of this node, i.e., serves as a generic copy
+    constructor for nodes.
+    */
+    Reference< XNode > SAL_CALL CNode::cloneNode(sal_Bool bDeep)
+    {
+        ::osl::MutexGuard const g(m_rMutex);
+
+        if (nullptr == m_aNodePtr) {
+            return nullptr;
+        }
+        ::rtl::Reference<CNode> const pNode = GetOwnerDocument().GetCNode(
+            xmlCopyNode(m_aNodePtr, bDeep ? 1 : 0));
+        if (!pNode.is()) { return nullptr; }
+        pNode->m_bUnlinked = true; // not linked yet
+        return pNode;
+    }
+
+    /**
+    A NamedNodeMap containing the attributes of this node (if it is an Element)
+    or null otherwise.
+    */
+    Reference< XNamedNodeMap > SAL_CALL CNode::getAttributes()
+    {
+        // return empty reference; only element node may override this impl
+        return Reference< XNamedNodeMap>();
+    }
+
+    /**
+    A NodeList that contains all children of this node.
+    */
+    Reference< XNodeList > SAL_CALL CNode::getChildNodes()
+    {
+        ::osl::MutexGuard const g(m_rMutex);
+
+        if (nullptr == m_aNodePtr) {
+            return nullptr;
+        }
+        Reference< XNodeList > const xNodeList(new CChildList(this, m_rMutex));
+        return xNodeList;
+    }
+
+    /**
+    The first child of this node.
+    */
+    Reference< XNode > SAL_CALL CNode::getFirstChild()
+    {
+        ::osl::MutexGuard const g(m_rMutex);
+
+        if (nullptr == m_aNodePtr) {
+            return nullptr;
+        }
+        return GetOwnerDocument().GetCNode(m_aNodePtr->children);
+    }
+
+    /**
+    The last child of this node.
+    */
+    Reference< XNode > SAL_CALL CNode::getLastChild()
+    {
+        ::osl::MutexGuard const g(m_rMutex);
+
+        if (nullptr == m_aNodePtr) {
+            return nullptr;
+        }
+        return GetOwnerDocument().GetCNode(xmlGetLastChild(m_aNodePtr));
+    }
+
+    /**
+    Returns the local part of the qualified name of this node.
+    */
+    OUString SAL_CALL CNode::getLocalName()
+    {
+        // see CElement/CAttr
+        return OUString();
+    }
+
+
+    /**
+    The namespace URI of this node, or null if it is unspecified.
+    */
+    OUString SAL_CALL CNode::getNamespaceURI()
+    {
+        ::osl::MutexGuard const g(m_rMutex);
+
+        OUString aURI;
+        if (m_aNodePtr != nullptr &&
+            (m_aNodePtr->type == XML_ELEMENT_NODE || m_aNodePtr->type == XML_ATTRIBUTE_NODE) &&
+            m_aNodePtr->ns != nullptr)
+        {
+            const xmlChar* pHref = m_aNodePtr->ns->href;
+            aURI = OUString(reinterpret_cast<char const *>(pHref), strlen(reinterpret_cast<char const *>(pHref)), RTL_TEXTENCODING_UTF8);
+        }
+        return aURI;
+    }
+
+    /**
+    The node immediately following this node.
+    */
+    Reference< XNode > SAL_CALL CNode::getNextSibling()
+    {
+        ::osl::MutexGuard const g(m_rMutex);
+
+        if (nullptr == m_aNodePtr) {
+            return nullptr;
+        }
+        return GetOwnerDocument().GetCNode(m_aNodePtr->next);
+    }
+
+    /**
+    The name of this node, depending on its type; see the table above.
+    */
+    OUString SAL_CALL CNode::getNodeName()
+    {
+        /*
+        Interface        nodeName               nodeValue                       attributes
+        --------------------------------------------------------------------------------------
+        Attr             name of attribute      value of attribute              null
+        CDATASection     "#cdata-section"       content of the CDATA Section    null
+        Comment          "#comment"             content of the comment          null
+        Document         "#document"            null                            null
+        DocumentFragment "#document-fragment"   null                            null
+        DocumentType     document type name     null                            null
+        Element          tag name               null                            NamedNodeMap
+        Entity           entity name            null                            null
+        EntityReference  name of entity         null                            null
+                         referenced
+        Notation         notation name          null                            null
+        Processing\      target                 entire content excluding        null
+        Instruction                             the target
+        Text             "#text"                content of the text node        null
+        */
+        return OUString();
+    }
+
+    /**
+    A code representing the type of the underlying object, as defined above.
+    */
+    NodeType SAL_CALL CNode::getNodeType()
+    {
+        ::osl::MutexGuard const g(m_rMutex);
+
+        return m_aNodeType;
+    }
+
+    /**
+    The value of this node, depending on its type; see the table above.
+    */
+    OUString SAL_CALL CNode::getNodeValue()
+    {
+        return OUString();
+    }
+
+    /**
+    The Document object associated with this node.
+    */
+    Reference< XDocument > SAL_CALL CNode::getOwnerDocument()
+    {
+        ::osl::MutexGuard const g(m_rMutex);
+
+        if (nullptr == m_aNodePtr) {
+            return nullptr;
+        }
+        Reference< XDocument > const xDoc(& GetOwnerDocument());
+        return xDoc;
+    }
+
+    /**
+    The parent of this node.
+    */
+    Reference< XNode > SAL_CALL CNode::getParentNode()
+    {
+        ::osl::MutexGuard const g(m_rMutex);
+
+        if (nullptr == m_aNodePtr) {
+            return nullptr;
+        }
+        return GetOwnerDocument().GetCNode(m_aNodePtr->parent);
+    }
+
+    /**
+    The namespace prefix of this node, or null if it is unspecified.
+    */
+    OUString SAL_CALL CNode::getPrefix()
+    {
+        ::osl::MutexGuard const g(m_rMutex);
+
+        OUString aPrefix;
+        if (m_aNodePtr != nullptr &&
+            (m_aNodePtr->type == XML_ELEMENT_NODE || m_aNodePtr->type == XML_ATTRIBUTE_NODE) &&
+            m_aNodePtr->ns != nullptr)
+        {
+            const xmlChar* pPrefix = m_aNodePtr->ns->prefix;
+            if( pPrefix != nullptr )
+                aPrefix = OUString(reinterpret_cast<char const *>(pPrefix), strlen(reinterpret_cast<char const *>(pPrefix)), RTL_TEXTENCODING_UTF8);
+        }
+        return aPrefix;
+
+    }
+
+    /**
+    The node immediately preceding this node.
+    */
+    Reference< XNode > SAL_CALL CNode::getPreviousSibling()
+    {
+        ::osl::MutexGuard const g(m_rMutex);
+
+        if (nullptr == m_aNodePtr) {
+            return nullptr;
+        }
+        return GetOwnerDocument().GetCNode(m_aNodePtr->prev);
+    }
+
+    /**
+    Returns whether this node (if it is an element) has any attributes.
+    */
+    sal_Bool SAL_CALL CNode::hasAttributes()
+    {
+        ::osl::MutexGuard const g(m_rMutex);
+
+        return (m_aNodePtr != nullptr && m_aNodePtr->properties != nullptr);
+    }
+
+    /**
+    Returns whether this node has any children.
+    */
+    sal_Bool SAL_CALL CNode::hasChildNodes()
+    {
+        ::osl::MutexGuard const g(m_rMutex);
+
+        return (m_aNodePtr != nullptr && m_aNodePtr->children != nullptr);
+    }
+
+    /**
+    Inserts the node newChild before the existing child node refChild.
+    */
+    Reference< XNode > SAL_CALL CNode::insertBefore(
+            const Reference< XNode >& newChild, const Reference< XNode >& refChild)
+    {
+        if (!newChild.is() || !refChild.is()) { throw RuntimeException(); }
+
+        checkSameOwner(newChild);
+
+        if (refChild->getParentNode() != Reference< XNode >(this)) {
+            DOMException e;
+            e.Code = DOMExceptionType_HIERARCHY_REQUEST_ERR;
+            throw e;
+        }
+
+        ::osl::ClearableMutexGuard guard(m_rMutex);
+
+        CNode *const pNewNode(dynamic_cast<CNode*>(newChild.get()));
+        CNode *const pRefNode(dynamic_cast<CNode*>(refChild.get()));
+        if (!pNewNode || !pRefNode) { throw RuntimeException(); }
+        xmlNodePtr const pNewChild(pNewNode->GetNodePtr());
+        xmlNodePtr const pRefChild(pRefNode->GetNodePtr());
+        if (!pNewChild || !pRefChild) { throw RuntimeException(); }
+
+        if (pNewChild == m_aNodePtr) {
+            DOMException e;
+            e.Code = DOMExceptionType_HIERARCHY_REQUEST_ERR;
+            throw e;
+        }
+        // already has parent
+        checkNoParent(pNewChild);
+
+        if (!IsChildTypeAllowed(pNewNode->m_aNodeType, nullptr)) {
+            DOMException e;
+            e.Code = DOMExceptionType_HIERARCHY_REQUEST_ERR;
+            throw e;
+        }
+
+        // attributes are unordered anyway, so just do appendChild
+        if (XML_ATTRIBUTE_NODE == pNewChild->type) {
+            guard.clear();
+            return appendChild(newChild);
+        }
+
+        xmlNodePtr cur = m_aNodePtr->children;
+
+        //search child before which to insert
+        while (cur != nullptr)
+        {
+            if (cur == pRefChild) {
+                // insert before
+                pNewChild->next = cur;
+                pNewChild->prev = cur->prev;
+                cur->prev = pNewChild;
+                if (pNewChild->prev != nullptr) {
+                    pNewChild->prev->next = pNewChild;
+                }
+                pNewChild->parent = cur->parent;
+                if (pNewChild->parent->children == cur) {
+                    pNewChild->parent->children = pNewChild;
+                }
+                // do not update parent->last here!
+                pNewNode->m_bUnlinked = false; // will be deleted by xmlFreeDoc
+                break;
+            }
+            cur = cur->next;
+        }
+        return refChild;
+    }
+
+    /**
+    Tests whether the DOM implementation implements a specific feature and
+    that feature is supported by this node.
+    */
+  sal_Bool SAL_CALL CNode::isSupported(const OUString& /*feature*/, const OUString& /*ver*/)
+    {
+        OSL_ENSURE(false, "CNode::isSupported: not implemented (#i113683#)");
+        return false;
+    }
+
+    /**
+    Puts all Text nodes in the full depth of the sub-tree underneath this
+    Node, including attribute nodes, into a "normal" form where only structure
+    (e.g., elements, comments, processing instructions, CDATA sections, and
+    entity references) separates Text nodes, i.e., there are neither adjacent
+    Text nodes nor empty Text nodes.
+    */
+    void SAL_CALL CNode::normalize()
+    {
+        //XXX combine adjacent text nodes and remove empty ones
+        OSL_ENSURE(false, "CNode::normalize: not implemented (#i113683#)");
+    }
+
+    /**
+    Removes the child node indicated by oldChild from the list of children,
+    and returns it.
+    */
+    Reference< XNode > SAL_CALL
+    CNode::removeChild(const Reference< XNode >& xOldChild)
+    {
+        if (!xOldChild.is()) {
+            throw RuntimeException();
+        }
+
+        checkSameOwner(xOldChild);
+
+        if (xOldChild->getParentNode() != Reference< XNode >(this)) {
+            DOMException e;
+            e.Code = DOMExceptionType_HIERARCHY_REQUEST_ERR;
+            throw e;
+        }
+
+        ::osl::ClearableMutexGuard guard(m_rMutex);
+
+        if (!m_aNodePtr) { throw RuntimeException(); }
+
+        Reference<XNode> xReturn( xOldChild );
+
+        ::rtl::Reference<CNode> const pOld(dynamic_cast<CNode*>(xOldChild.get()));
+        if (!pOld.is()) { throw RuntimeException(); }
+        xmlNodePtr const old = pOld->GetNodePtr();
+        if (!old) { throw RuntimeException(); }
+
+        if( old->type == XML_ATTRIBUTE_NODE )
+        {
+            xmlAttrPtr pAttr = reinterpret_cast<xmlAttrPtr>(old);
+            xmlRemoveProp( pAttr );
+            pOld->invalidate(); // freed by xmlRemoveProp
+            xReturn.clear();
+        }
+        else
+        {
+            xmlUnlinkNode(old);
+            pOld->m_bUnlinked = true;
+        }
+
+        /*DOMNodeRemoved
+         * Fired when a node is being removed from its parent node.
+         * This event is dispatched before the node is removed from the tree.
+         * The target of this event is the node being removed.
+         *   Bubbles: Yes
+         *   Cancelable: No
+         *   Context Info: relatedNode holds the parent node
+         */
+        Reference< XDocumentEvent > docevent(getOwnerDocument(), UNO_QUERY);
+        Reference< XMutationEvent > event(docevent->createEvent(
+            "DOMNodeRemoved"), UNO_QUERY);
+        event->initMutationEvent("DOMNodeRemoved",
+            true,
+            false,
+            this,
+            OUString(), OUString(), OUString(), AttrChangeType(0) );
+
+        // the following dispatch functions use only UNO interfaces
+        // and call event listeners, so release mutex to prevent deadlocks.
+        guard.clear();
+
+        dispatchEvent(event);
+        // subtree modified for this node
+        dispatchSubtreeModified();
+
+        return xReturn;
+    }
+
+    /**
+    Replaces the child node oldChild with newChild in the list of children,
+    and returns the oldChild node.
+    */
+    Reference< XNode > SAL_CALL CNode::replaceChild(
+            Reference< XNode > const& xNewChild,
+            Reference< XNode > const& xOldChild)
+     {
+        if (!xOldChild.is() || !xNewChild.is()) {
+            throw RuntimeException();
+        }
+
+        checkSameOwner(xNewChild);
+
+        if (xOldChild->getParentNode() != Reference< XNode >(this)) {
+            DOMException e;
+            e.Code = DOMExceptionType_HIERARCHY_REQUEST_ERR;
+            throw e;
+        }
+
+        ::osl::ClearableMutexGuard guard(m_rMutex);
+
+        ::rtl::Reference<CNode> const pOldNode(dynamic_cast<CNode*>(xOldChild.get()));
+        ::rtl::Reference<CNode> const pNewNode(dynamic_cast<CNode*>(xNewChild.get()));
+        if (!pOldNode.is() || !pNewNode.is()) { throw RuntimeException(); }
+        xmlNodePtr const pOld = pOldNode->GetNodePtr();
+        xmlNodePtr const pNew = pNewNode->GetNodePtr();
+        if (!pOld || !pNew) { throw RuntimeException(); }
+
+        if (pNew == m_aNodePtr) {
+            DOMException e;
+            e.Code = DOMExceptionType_HIERARCHY_REQUEST_ERR;
+            throw e;
+        }
+        // already has parent
+        checkNoParent(pNew);
+
+        if (!IsChildTypeAllowed(pNewNode->m_aNodeType, &pOldNode->m_aNodeType)) {
+            DOMException e;
+            e.Code = DOMExceptionType_HIERARCHY_REQUEST_ERR;
+            throw e;
+        }
+
+        if( pOld->type == XML_ATTRIBUTE_NODE )
+        {
+            // can only replace attribute with attribute
+            if ( pOld->type != pNew->type )
+            {
+                DOMException e;
+                e.Code = DOMExceptionType_HIERARCHY_REQUEST_ERR;
+                throw e;
+            }
+
+            xmlAttrPtr pAttr = reinterpret_cast<xmlAttrPtr>(pOld);
+            xmlRemoveProp( pAttr );
+            pOldNode->invalidate(); // freed by xmlRemoveProp
+            appendChild(xNewChild);
+        }
+        else
+        {
+
+        xmlNodePtr cur = m_aNodePtr->children;
+        //find old node in child list
+        while (cur != nullptr)
+        {
+            if(cur == pOld)
+            {
+                // exchange nodes
+                pNew->prev = pOld->prev;
+                if (pNew->prev != nullptr)
+                    pNew->prev->next = pNew;
+                pNew->next = pOld->next;
+                if (pNew->next != nullptr)
+                    pNew->next->prev = pNew;
+                pNew->parent = pOld->parent;
+                assert(pNew->parent && "coverity[var_deref_op] pNew->parent cannot be NULL here");
+                if(pNew->parent->children == pOld)
+                    pNew->parent->children = pNew;
+                if(pNew->parent->last == pOld)
+                    pNew->parent->last = pNew;
+                pOld->next = nullptr;
+                pOld->prev = nullptr;
+                pOld->parent = nullptr;
+                pOldNode->m_bUnlinked = true;
+                pNewNode->m_bUnlinked = false; // will be deleted by xmlFreeDoc
+            }
+            cur = cur->next;
+        }
+        }
+
+        guard.clear(); // release for calling event handlers
+        dispatchSubtreeModified();
+
+        return xOldChild;
+    }
+
+    void CNode::dispatchSubtreeModified()
+    {
+        // only uses UNO interfaces => needs no mutex
+
+        // dispatch DOMSubtreeModified
+        // target is _this_ node
+        Reference< XDocumentEvent > docevent(getOwnerDocument(), UNO_QUERY);
+        Reference< XMutationEvent > event(docevent->createEvent(
+            "DOMSubtreeModified"), UNO_QUERY);
+        event->initMutationEvent(
+            "DOMSubtreeModified", true,
+            false, Reference< XNode >(),
+            OUString(), OUString(), OUString(), AttrChangeType(0) );
+        dispatchEvent(event);
+    }
+
+    /**
+    The value of this node, depending on its type; see the table above.
+    */
+    void SAL_CALL CNode::setNodeValue(const OUString& /*nodeValue*/)
+    {
+        // use specific node implementation
+        // if we end up down here, something went wrong
+        DOMException e;
+        e.Code = DOMExceptionType_NO_MODIFICATION_ALLOWED_ERR;
+        throw e;
+    }
+
+    /**
+    The namespace prefix of this node, or null if it is unspecified.
+    */
+    void SAL_CALL CNode::setPrefix(const OUString& prefix)
+    {
+        ::osl::MutexGuard const g(m_rMutex);
+
+        if ((nullptr == m_aNodePtr) ||
+            ((m_aNodePtr->type != XML_ELEMENT_NODE) &&
+             (m_aNodePtr->type != XML_ATTRIBUTE_NODE)))
+        {
+            DOMException e;
+            e.Code = DOMExceptionType_NO_MODIFICATION_ALLOWED_ERR;
+            throw e;
+        }
+        OString o1 = OUStringToOString(prefix, RTL_TEXTENCODING_UTF8);
+        xmlChar const *pBuf = reinterpret_cast<xmlChar const *>(o1.getStr());
+        if (m_aNodePtr != nullptr && m_aNodePtr->ns != nullptr)
+        {
+            xmlFree(const_cast<xmlChar *>(m_aNodePtr->ns->prefix));
+            m_aNodePtr->ns->prefix = xmlStrdup(pBuf);
+        }
+
+    }
+
+        // --- XEventTarget
+    void SAL_CALL CNode::addEventListener(const OUString& eventType,
+        const Reference< css::xml::dom::events::XEventListener >& listener,
+        sal_Bool useCapture)
+    {
+        ::osl::MutexGuard const g(m_rMutex);
+
+        CDocument & rDocument(GetOwnerDocument());
+        events::CEventDispatcher & rDispatcher(rDocument.GetEventDispatcher());
+        rDispatcher.addListener(m_aNodePtr, eventType, listener, useCapture);
+    }
+
+    void SAL_CALL CNode::removeEventListener(const OUString& eventType,
+        const Reference< css::xml::dom::events::XEventListener >& listener,
+        sal_Bool useCapture)
+    {
+        ::osl::MutexGuard const g(m_rMutex);
+
+        CDocument & rDocument(GetOwnerDocument());
+        events::CEventDispatcher & rDispatcher(rDocument.GetEventDispatcher());
+        rDispatcher.removeListener(m_aNodePtr, eventType, listener, useCapture);
+    }
+
+    sal_Bool SAL_CALL CNode::dispatchEvent(const Reference< XEvent >& evt)
+    {
+        CDocument * pDocument;
+        events::CEventDispatcher * pDispatcher;
+        xmlNodePtr pNode;
+        {
+            ::osl::MutexGuard const g(m_rMutex);
+
+            pDocument = & GetOwnerDocument();
+            pDispatcher = & pDocument->GetEventDispatcher();
+            pNode = m_aNodePtr;
+        }
+        // this calls event listeners, do not call with locked mutex
+        pDispatcher->dispatchEvent(*pDocument, m_rMutex, pNode, this, evt);
+        return true;
+    }
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/unoxml/source/dom/notation.cxx b/unoxml/source/dom/notation.cxx
new file mode 100644
index 0000000000..352d5b0029
--- /dev/null
+++ b/unoxml/source/dom/notation.cxx
@@ -0,0 +1,75 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include "notation.hxx"
+
+#include <string.h>
+
+#include <osl/diagnose.h>
+
+using namespace css::uno;
+using namespace css::xml::dom;
+
+namespace DOM
+{
+    CNotation::CNotation(CDocument const& rDocument, ::osl::Mutex const& rMutex,
+            xmlNotationPtr const pNotation)
+        : CNotation_Base(rDocument, rMutex,
+            NodeType_NOTATION_NODE, reinterpret_cast<xmlNodePtr>(pNotation))
+    {
+    }
+
+    OUString SAL_CALL CNotation::getPublicId()
+    {
+        OSL_ENSURE(false,
+            "CNotation::getPublicId: not implemented (#i113683#)");
+        return OUString();
+    }
+
+    /**
+    The system identifier of this notation.
+    */
+    OUString SAL_CALL CNotation::getSystemId()
+    {
+        OSL_ENSURE(false,
+            "CNotation::getSystemId: not implemented (#i113683#)");
+        return OUString();
+    }
+
+
+    OUString SAL_CALL CNotation::getNodeName()
+    {
+        ::osl::MutexGuard const g(m_rMutex);
+
+        OUString aName;
+        if (m_aNodePtr != nullptr)
+        {
+            const xmlChar* pName = m_aNodePtr->name;
+            aName = OUString(reinterpret_cast<char const *>(pName), strlen(reinterpret_cast<char const *>(pName)), RTL_TEXTENCODING_UTF8);
+        }
+        return aName;
+    }
+
+    OUString SAL_CALL CNotation::getNodeValue()
+    {
+        return OUString();
+    }
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/unoxml/source/dom/notation.hxx b/unoxml/source/dom/notation.hxx
new file mode 100644
index 0000000000..2a95200f51
--- /dev/null
+++ b/unoxml/source/dom/notation.hxx
@@ -0,0 +1,157 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#pragma once
+
+#include <libxml/tree.h>
+
+#include <com/sun/star/uno/Reference.h>
+#include <com/sun/star/xml/dom/XNotation.hpp>
+
+#include <cppuhelper/implbase.hxx>
+#include <node.hxx>
+
+namespace DOM
+{
+    typedef cppu::ImplInheritanceHelper< CNode, css::xml::dom::XNotation > CNotation_Base;
+
+    class CNotation
+        : public CNotation_Base
+    {
+    private:
+        friend class CDocument;
+
+        CNotation(CDocument const& rDocument, ::osl::Mutex const& rMutex,
+                xmlNotationPtr const pNotation);
+
+        /**
+        The public identifier of this notation.
+        */
+        virtual OUString SAL_CALL getPublicId() override;
+
+        /**
+        The system identifier of this notation.
+        */
+        virtual OUString SAL_CALL getSystemId() override;
+
+        // ---- resolve uno inheritance problems...
+        // overrides for XNode base
+        virtual OUString SAL_CALL getNodeName() override;
+        virtual OUString SAL_CALL getNodeValue() override;
+    // --- delegation for XNode base.
+    virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL appendChild(const css::uno::Reference< css::xml::dom::XNode >& newChild) override
+    {
+        return CNode::appendChild(newChild);
+    }
+    virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL cloneNode(sal_Bool deep) override
+    {
+        return CNode::cloneNode(deep);
+    }
+    virtual css::uno::Reference< css::xml::dom::XNamedNodeMap > SAL_CALL getAttributes() override
+    {
+        return CNode::getAttributes();
+    }
+    virtual css::uno::Reference< css::xml::dom::XNodeList > SAL_CALL getChildNodes() override
+    {
+        return CNode::getChildNodes();
+    }
+    virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL getFirstChild() override
+    {
+        return CNode::getFirstChild();
+    }
+    virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL getLastChild() override
+    {
+        return CNode::getLastChild();
+    }
+    virtual OUString SAL_CALL getLocalName() override
+    {
+        return CNode::getLocalName();
+    }
+    virtual OUString SAL_CALL getNamespaceURI() override
+    {
+        return CNode::getNamespaceURI();
+    }
+    virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL getNextSibling() override
+    {
+        return CNode::getNextSibling();
+    }
+    virtual css::xml::dom::NodeType SAL_CALL getNodeType() override
+    {
+        return CNode::getNodeType();
+    }
+    virtual css::uno::Reference< css::xml::dom::XDocument > SAL_CALL getOwnerDocument() override
+    {
+        return CNode::getOwnerDocument();
+    }
+    virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL getParentNode() override
+    {
+        return CNode::getParentNode();
+    }
+    virtual OUString SAL_CALL getPrefix() override
+    {
+        return CNode::getPrefix();
+    }
+    virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL getPreviousSibling() override
+    {
+        return CNode::getPreviousSibling();
+    }
+    virtual sal_Bool SAL_CALL hasAttributes() override
+    {
+        return CNode::hasAttributes();
+    }
+    virtual sal_Bool SAL_CALL hasChildNodes() override
+    {
+        return CNode::hasChildNodes();
+    }
+    virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL insertBefore(
+            const css::uno::Reference< css::xml::dom::XNode >& newChild, const css::uno::Reference< css::xml::dom::XNode >& refChild) override
+    {
+        return CNode::insertBefore(newChild, refChild);
+    }
+    virtual sal_Bool SAL_CALL isSupported(const OUString& feature, const OUString& ver) override
+    {
+        return CNode::isSupported(feature, ver);
+    }
+    virtual void SAL_CALL normalize() override
+    {
+        CNode::normalize();
+    }
+    virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL removeChild(const css::uno::Reference< css::xml::dom::XNode >& oldChild) override
+    {
+        return CNode::removeChild(oldChild);
+    }
+    virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL replaceChild(
+            const css::uno::Reference< css::xml::dom::XNode >& newChild, const css::uno::Reference< css::xml::dom::XNode >& oldChild) override
+    {
+        return CNode::replaceChild(newChild, oldChild);
+    }
+    virtual void SAL_CALL setNodeValue(const OUString& nodeValue) override
+    {
+        return CNode::setNodeValue(nodeValue);
+    }
+    virtual void SAL_CALL setPrefix(const OUString& prefix) override
+    {
+        return CNode::setPrefix(prefix);
+    }
+
+
+    };
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/unoxml/source/dom/notationsmap.cxx b/unoxml/source/dom/notationsmap.cxx
new file mode 100644
index 0000000000..07cb851b3f
--- /dev/null
+++ b/unoxml/source/dom/notationsmap.cxx
@@ -0,0 +1,122 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include "notationsmap.hxx"
+
+#include <osl/diagnose.h>
+
+using namespace css::uno;
+using namespace css::xml::dom;
+
+namespace DOM
+{
+    CNotationsMap::CNotationsMap()
+    {
+    }
+
+    /**
+    The number of nodes in this map.
+    */
+    sal_Int32 SAL_CALL CNotationsMap::getLength()
+    {
+        OSL_ENSURE(false,
+            "CNotationsMap::getLength: not implemented (#i113683#)");
+        return 0;
+    }
+
+    /**
+    Retrieves a node specified by local name
+    */
+    Reference< XNode > SAL_CALL
+    CNotationsMap::getNamedItem(OUString const& /*name*/)
+    {
+        OSL_ENSURE(false,
+            "CNotationsMap::getNamedItem: not implemented (#i113683#)");
+        return Reference< XNode >();
+    }
+
+    /**
+    Retrieves a node specified by local name and namespace URI.
+    */
+    Reference< XNode > SAL_CALL
+    CNotationsMap::getNamedItemNS(
+        OUString const& /*namespaceURI*/, OUString const& /*localName*/)
+    {
+        OSL_ENSURE(false,
+            "CNotationsMap::getNamedItemNS: not implemented (#i113683#)");
+        return Reference< XNode >();
+    }
+
+    /**
+    Returns the indexth item in the map.
+    */
+    Reference< XNode > SAL_CALL
+    CNotationsMap::item(sal_Int32 /*index*/)
+    {
+        OSL_ENSURE(false, "CNotationsMap::item: not implemented (#i113683#)");
+        return Reference< XNode >();
+    }
+
+    /**
+    Removes a node specified by name.
+    */
+    Reference< XNode > SAL_CALL
+    CNotationsMap::removeNamedItem(OUString const& /*name*/)
+    {
+        OSL_ENSURE(false,
+            "CNotationsMap::removeNamedItem: not implemented (#i113683#)");
+        return Reference< XNode >();
+    }
+
+    /**
+    // Removes a node specified by local name and namespace URI.
+    */
+    Reference< XNode > SAL_CALL
+    CNotationsMap::removeNamedItemNS(
+        OUString const& /*namespaceURI*/, OUString const& /*localName*/)
+    {
+        OSL_ENSURE(false,
+            "CNotationsMap::removeNamedItemNS: not implemented (#i113683#)");
+        return Reference< XNode >();
+    }
+
+    /**
+    // Adds a node using its nodeName attribute.
+    */
+    Reference< XNode > SAL_CALL
+    CNotationsMap::setNamedItem(Reference< XNode > const& /*arg*/)
+    {
+        OSL_ENSURE(false,
+            "CNotationsMap::setNamedItem: not implemented (#i113683#)");
+        return Reference< XNode >();
+    }
+
+    /**
+    Adds a node using its namespaceURI and localName.
+    */
+    Reference< XNode > SAL_CALL
+    CNotationsMap::setNamedItemNS(Reference< XNode > const& /*arg*/)
+    {
+        OSL_ENSURE(false,
+            "CNotationsMap::setNamedItemNS: not implemented (#i113683#)");
+        return Reference< XNode >();
+    }
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/unoxml/source/dom/notationsmap.hxx b/unoxml/source/dom/notationsmap.hxx
new file mode 100644
index 0000000000..9dac7d968c
--- /dev/null
+++ b/unoxml/source/dom/notationsmap.hxx
@@ -0,0 +1,89 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#pragma once
+
+#include <sal/types.h>
+
+#include <com/sun/star/uno/Reference.h>
+#include <com/sun/star/xml/dom/XNode.hpp>
+#include <com/sun/star/xml/dom/XNamedNodeMap.hpp>
+
+#include <cppuhelper/implbase.hxx>
+
+namespace DOM
+{
+    class CDocumentType;
+
+    class CNotationsMap
+        : public cppu::WeakImplHelper< css::xml::dom::XNamedNodeMap >
+    {
+    public:
+        CNotationsMap();
+
+        /**
+        The number of nodes in this map.
+        */
+        virtual sal_Int32 SAL_CALL getLength() override;
+
+        /**
+        Retrieves a node specified by local name
+        */
+        virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL
+            getNamedItem(OUString const& name) override;
+
+        /**
+        Retrieves a node specified by local name and namespace URI.
+        */
+        virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL getNamedItemNS(
+                OUString const& namespaceURI, OUString const& localName) override;
+
+        /**
+        Returns the indexth item in the map.
+        */
+        virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL
+            item(sal_Int32 index) override;
+
+        /**
+        Removes a node specified by name.
+        */
+        virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL
+            removeNamedItem(OUString const& name) override;
+
+        /**
+        // Removes a node specified by local name and namespace URI.
+        */
+        virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL removeNamedItemNS(
+                OUString const& namespaceURI, OUString const& localName) override;
+
+        /**
+        // Adds a node using its nodeName attribute.
+        */
+        virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL
+            setNamedItem(css::uno::Reference< css::xml::dom::XNode > const& arg) override;
+
+        /**
+        Adds a node using its namespaceURI and localName.
+        */
+        virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL
+            setNamedItemNS(css::uno::Reference< css::xml::dom::XNode > const& arg) override;
+    };
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/unoxml/source/dom/processinginstruction.cxx b/unoxml/source/dom/processinginstruction.cxx
new file mode 100644
index 0000000000..9eda0b9046
--- /dev/null
+++ b/unoxml/source/dom/processinginstruction.cxx
@@ -0,0 +1,137 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include "processinginstruction.hxx"
+
+#include <string.h>
+
+#include <com/sun/star/xml/sax/XExtendedDocumentHandler.hpp>
+
+using namespace css::uno;
+using namespace css::xml::dom;
+using namespace css::xml::sax;
+
+namespace DOM
+{
+    CProcessingInstruction::CProcessingInstruction(
+            CDocument const& rDocument, ::osl::Mutex const& rMutex,
+            xmlNodePtr const pNode)
+        : CProcessingInstruction_Base(rDocument, rMutex,
+            NodeType_PROCESSING_INSTRUCTION_NODE, pNode)
+    {
+    }
+
+    void CProcessingInstruction::saxify(
+            const Reference< XDocumentHandler >& i_xHandler) {
+        if (!i_xHandler.is()) throw RuntimeException();
+        Reference< XExtendedDocumentHandler > xExtended(i_xHandler, UNO_QUERY);
+        if (xExtended.is()) {
+            xExtended->processingInstruction(getTarget(), getData());
+        }
+    }
+
+    /**
+    The content of this processing instruction.
+    */
+    OUString SAL_CALL
+    CProcessingInstruction::getData()
+    {
+        ::osl::MutexGuard const g(m_rMutex);
+
+        if (nullptr == m_aNodePtr) {
+            return OUString();
+        }
+
+        char const*const pContent(
+                reinterpret_cast<char const*>(m_aNodePtr->content));
+        if (nullptr == pContent) {
+            return OUString();
+        }
+        OUString const ret(pContent, strlen(pContent), RTL_TEXTENCODING_UTF8);
+        return ret;
+    }
+
+    /**
+    The target of this processing instruction.
+    */
+    OUString SAL_CALL
+    CProcessingInstruction::getTarget()
+    {
+        ::osl::MutexGuard const g(m_rMutex);
+
+        if (nullptr == m_aNodePtr) {
+            return OUString();
+        }
+
+        char const*const pName(
+                reinterpret_cast<char const*>(m_aNodePtr->name));
+        if (nullptr == pName) {
+            return OUString();
+        }
+        OUString const ret(pName, strlen(pName), RTL_TEXTENCODING_UTF8);
+        return ret;
+    }
+
+    /**
+    The content of this processing instruction.
+    */
+    void SAL_CALL CProcessingInstruction::setData(OUString const& rData)
+    {
+        ::osl::MutexGuard const g(m_rMutex);
+
+        if (nullptr == m_aNodePtr) {
+            throw RuntimeException();
+        }
+
+        OString const data(
+                OUStringToOString(rData, RTL_TEXTENCODING_UTF8));
+        xmlChar const*const pData(
+                reinterpret_cast<xmlChar const*>(data.getStr()) );
+        xmlFree(m_aNodePtr->content);
+        m_aNodePtr->content = xmlStrdup(pData);
+    }
+
+    OUString SAL_CALL
+    CProcessingInstruction::getNodeName()
+    {
+        ::osl::MutexGuard const g(m_rMutex);
+
+        if (nullptr == m_aNodePtr) {
+            return OUString();
+        }
+
+        char const*const pName =
+            reinterpret_cast<char const*>(m_aNodePtr->name);
+        OUString const ret(pName, strlen(pName), RTL_TEXTENCODING_UTF8);
+        return ret;
+    }
+
+    OUString SAL_CALL CProcessingInstruction::getNodeValue()
+    {
+        return getData();
+    }
+
+    void SAL_CALL
+    CProcessingInstruction::setNodeValue(OUString const& rNodeValue)
+    {
+        return setData(rNodeValue);
+    }
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/unoxml/source/dom/processinginstruction.hxx b/unoxml/source/dom/processinginstruction.hxx
new file mode 100644
index 0000000000..e2c0278169
--- /dev/null
+++ b/unoxml/source/dom/processinginstruction.hxx
@@ -0,0 +1,165 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#pragma once
+
+#include <libxml/tree.h>
+
+#include <com/sun/star/uno/Reference.h>
+#include <com/sun/star/xml/dom/XProcessingInstruction.hpp>
+
+#include <cppuhelper/implbase.hxx>
+#include <node.hxx>
+
+namespace DOM
+{
+    typedef ::cppu::ImplInheritanceHelper< CNode, css::xml::dom::XProcessingInstruction >
+        CProcessingInstruction_Base;
+
+    class CProcessingInstruction
+        : public CProcessingInstruction_Base
+    {
+    private:
+        friend class CDocument;
+
+        CProcessingInstruction(
+                CDocument const& rDocument, ::osl::Mutex const& rMutex,
+                xmlNodePtr const pNode);
+
+    public:
+
+        virtual void saxify(const css::uno::Reference< css::xml::sax::XDocumentHandler >& i_xHandler) override;
+
+        /**
+        The content of this processing instruction.
+        */
+        virtual OUString SAL_CALL getData() override;
+
+        /**
+        The target of this processing instruction.
+        */
+        virtual OUString SAL_CALL getTarget() override;
+
+        /**
+        The content of this processing instruction.
+        */
+        virtual void SAL_CALL setData(const OUString& data) override;
+
+        // ---- resolve uno inheritance problems...
+        // overrides for XNode base
+        virtual OUString SAL_CALL getNodeName() override;
+        virtual OUString SAL_CALL getNodeValue() override;
+        virtual void SAL_CALL setNodeValue(OUString const& rNodeValue) override;
+
+    // --- delegation for XNode base.
+    virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL appendChild(const css::uno::Reference< css::xml::dom::XNode >& newChild) override
+    {
+        return CNode::appendChild(newChild);
+    }
+    virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL cloneNode(sal_Bool deep) override
+    {
+        return CNode::cloneNode(deep);
+    }
+    virtual css::uno::Reference< css::xml::dom::XNamedNodeMap > SAL_CALL getAttributes() override
+    {
+        return CNode::getAttributes();
+    }
+    virtual css::uno::Reference< css::xml::dom::XNodeList > SAL_CALL getChildNodes() override
+    {
+        return CNode::getChildNodes();
+    }
+    virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL getFirstChild() override
+    {
+        return CNode::getFirstChild();
+    }
+    virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL getLastChild() override
+    {
+        return CNode::getLastChild();
+    }
+    virtual OUString SAL_CALL getLocalName() override
+    {
+        return CNode::getLocalName();
+    }
+    virtual OUString SAL_CALL getNamespaceURI() override
+    {
+        return CNode::getNamespaceURI();
+    }
+    virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL getNextSibling() override
+    {
+        return CNode::getNextSibling();
+    }
+    virtual css::xml::dom::NodeType SAL_CALL getNodeType() override
+    {
+        return CNode::getNodeType();
+    }
+    virtual css::uno::Reference< css::xml::dom::XDocument > SAL_CALL getOwnerDocument() override
+    {
+        return CNode::getOwnerDocument();
+    }
+    virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL getParentNode() override
+    {
+        return CNode::getParentNode();
+    }
+    virtual OUString SAL_CALL getPrefix() override
+    {
+        return CNode::getPrefix();
+    }
+    virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL getPreviousSibling() override
+    {
+        return CNode::getPreviousSibling();
+    }
+    virtual sal_Bool SAL_CALL hasAttributes() override
+    {
+        return CNode::hasAttributes();
+    }
+    virtual sal_Bool SAL_CALL hasChildNodes() override
+    {
+        return CNode::hasChildNodes();
+    }
+    virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL insertBefore(
+            const css::uno::Reference< css::xml::dom::XNode >& newChild, const css::uno::Reference< css::xml::dom::XNode >& refChild) override
+    {
+        return CNode::insertBefore(newChild, refChild);
+    }
+    virtual sal_Bool SAL_CALL isSupported(const OUString& feature, const OUString& ver) override
+    {
+        return CNode::isSupported(feature, ver);
+    }
+    virtual void SAL_CALL normalize() override
+    {
+        CNode::normalize();
+    }
+    virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL removeChild(const css::uno::Reference< css::xml::dom::XNode >& oldChild) override
+    {
+        return CNode::removeChild(oldChild);
+    }
+    virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL replaceChild(
+            const css::uno::Reference< css::xml::dom::XNode >& newChild, const css::uno::Reference< css::xml::dom::XNode >& oldChild) override
+    {
+        return CNode::replaceChild(newChild, oldChild);
+    }
+    virtual void SAL_CALL setPrefix(const OUString& prefix) override
+    {
+        return CNode::setPrefix(prefix);
+    }
+
+    };
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/unoxml/source/dom/saxbuilder.cxx b/unoxml/source/dom/saxbuilder.cxx
new file mode 100644
index 0000000000..61b7a496a5
--- /dev/null
+++ b/unoxml/source/dom/saxbuilder.cxx
@@ -0,0 +1,344 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include "saxbuilder.hxx"
+
+#include <com/sun/star/xml/dom/DocumentBuilder.hpp>
+#include <com/sun/star/xml/sax/SAXException.hpp>
+#include <cppuhelper/supportsservice.hxx>
+#include <sax/fastattribs.hxx>
+#include <xmloff/xmlimp.hxx>
+
+using namespace css::lang;
+using namespace css::uno;
+using namespace css::xml::dom;
+using namespace css::xml::sax;
+
+namespace DOM
+{
+    CSAXDocumentBuilder::CSAXDocumentBuilder(const Reference< XComponentContext >& ctx)
+        : m_xContext(ctx)
+        , m_aState( SAXDocumentBuilderState_READY)
+    {}
+
+    Sequence< OUString > SAL_CALL CSAXDocumentBuilder::getSupportedServiceNames()
+    {
+        return { "com.sun.star.xml.dom.SAXDocumentBuilder" };
+    }
+
+    OUString SAL_CALL CSAXDocumentBuilder::getImplementationName()
+    {
+        return "com.sun.star.comp.xml.dom.SAXDocumentBuilder";
+    }
+
+    sal_Bool SAL_CALL CSAXDocumentBuilder::supportsService(const OUString& aServiceName)
+    {
+        return cppu::supportsService(this, aServiceName);
+    }
+
+    SAXDocumentBuilderState SAL_CALL CSAXDocumentBuilder::getState()
+    {
+        std::scoped_lock g(m_Mutex);
+
+        return m_aState;
+    }
+
+    void SAL_CALL CSAXDocumentBuilder::reset()
+    {
+        std::scoped_lock g(m_Mutex);
+
+        m_aDocument.clear();
+        m_aFragment.clear();
+        while (!m_aNodeStack.empty()) m_aNodeStack.pop();
+        m_aState = SAXDocumentBuilderState_READY;
+    }
+
+    Reference< XDocument > SAL_CALL CSAXDocumentBuilder::getDocument()
+    {
+        std::scoped_lock g(m_Mutex);
+
+        if (m_aState != SAXDocumentBuilderState_DOCUMENT_FINISHED)
+            throw RuntimeException();
+
+        return m_aDocument;
+    }
+
+    Reference< XDocumentFragment > SAL_CALL CSAXDocumentBuilder::getDocumentFragment()
+    {
+        std::scoped_lock g(m_Mutex);
+
+        if (m_aState != SAXDocumentBuilderState_FRAGMENT_FINISHED)
+            throw RuntimeException();
+        return m_aFragment;
+    }
+
+    void SAL_CALL CSAXDocumentBuilder::startDocumentFragment(const Reference< XDocument >& ownerDoc)
+    {
+        std::scoped_lock g(m_Mutex);
+
+        // start a new document fragment and push it onto the stack
+        // we have to be in a clean state to do this
+        if (m_aState != SAXDocumentBuilderState_READY)
+            throw RuntimeException();
+
+        m_aDocument = ownerDoc;
+        Reference< XDocumentFragment > aFragment = m_aDocument->createDocumentFragment();
+        m_aNodeStack.push(aFragment);
+        m_aFragment = aFragment;
+        m_aState = SAXDocumentBuilderState_BUILDING_FRAGMENT;
+    }
+
+    void SAL_CALL CSAXDocumentBuilder::endDocumentFragment()
+    {
+        std::scoped_lock g(m_Mutex);
+
+        // there should only be the document left on the node stack
+        if (m_aState != SAXDocumentBuilderState_BUILDING_FRAGMENT)
+            throw RuntimeException();
+
+        Reference< XNode > aNode = m_aNodeStack.top();
+        if ( aNode->getNodeType() != NodeType_DOCUMENT_FRAGMENT_NODE)
+            throw RuntimeException();
+        m_aNodeStack.pop();
+        m_aState = SAXDocumentBuilderState_FRAGMENT_FINISHED;
+    }
+
+    //XFastDocumentHandler
+    void SAL_CALL CSAXDocumentBuilder::startDocument()
+    {
+        std::scoped_lock g(m_Mutex);
+
+        // start a new document and push it onto the stack
+        // we have to be in a clean state to do this
+        if (m_aState != SAXDocumentBuilderState_READY)
+            throw SAXException();
+
+        Reference< XDocumentBuilder > aBuilder(DocumentBuilder::create(m_xContext));
+        Reference< XDocument > aDocument = aBuilder->newDocument();
+        m_aNodeStack.push(aDocument);
+        m_aDocument = aDocument;
+        m_aState = SAXDocumentBuilderState_BUILDING_DOCUMENT;
+    }
+
+    void SAL_CALL CSAXDocumentBuilder::endDocument()
+    {
+        std::scoped_lock g(m_Mutex);
+
+        // there should only be the document left on the node stack
+        if (m_aState != SAXDocumentBuilderState_BUILDING_DOCUMENT)
+            throw SAXException();
+
+        Reference< XNode > aNode = m_aNodeStack.top();
+        if ( aNode->getNodeType() != NodeType_DOCUMENT_NODE)
+            throw SAXException();
+        m_aNodeStack.pop();
+        m_aState = SAXDocumentBuilderState_DOCUMENT_FINISHED;
+    }
+
+    void SAL_CALL CSAXDocumentBuilder::processingInstruction( const OUString& rTarget, const OUString& rData )
+    {
+        std::scoped_lock g(m_Mutex);
+
+        //  append PI node to the current top
+        if ( m_aState != SAXDocumentBuilderState_BUILDING_DOCUMENT &&
+             m_aState != SAXDocumentBuilderState_BUILDING_FRAGMENT)
+            throw SAXException();
+
+        Reference< XProcessingInstruction > aInstruction = m_aDocument->createProcessingInstruction(
+                rTarget, rData);
+        m_aNodeStack.top()->appendChild(aInstruction);
+    }
+
+    void SAL_CALL CSAXDocumentBuilder::setDocumentLocator( const Reference< XLocator >& )
+    {
+    }
+
+    void SAL_CALL CSAXDocumentBuilder::startFastElement( sal_Int32 nElement , const Reference< XFastAttributeList >& xAttribs  )
+    {
+        std::scoped_lock g(m_Mutex);
+
+        if ( m_aState != SAXDocumentBuilderState_BUILDING_DOCUMENT &&
+             m_aState != SAXDocumentBuilderState_BUILDING_FRAGMENT)
+        {
+            throw SAXException();
+        }
+
+        Reference< XElement > aElement;
+        const OUString& aPrefix(SvXMLImport::getNamespacePrefixFromToken(nElement, nullptr));
+        const OUString& aURI( SvXMLImport::getNamespaceURIFromToken( nElement ) );
+        OUString aQualifiedName( SvXMLImport::getNameFromToken( nElement ) );
+        if( !aPrefix.isEmpty() )
+            aQualifiedName = aPrefix + SvXMLImport::aNamespaceSeparator + aQualifiedName;
+
+        if ( !aURI.isEmpty() )
+        {
+            // found a URI for prefix
+            // qualified name
+            aElement = m_aDocument->createElementNS( aURI, aQualifiedName );
+        }
+        else
+        {
+            // no URI for prefix
+            aElement = m_aDocument->createElement( aQualifiedName );
+        }
+        aElement.set( m_aNodeStack.top()->appendChild(aElement), UNO_QUERY);
+        m_aNodeStack.push(aElement);
+
+        if (xAttribs.is())
+            setElementFastAttributes(aElement, xAttribs);
+    }
+
+    // For arbitrary meta elements
+    void SAL_CALL CSAXDocumentBuilder::startUnknownElement( const OUString& rNamespace, const OUString& rName, const Reference< XFastAttributeList >& xAttribs )
+    {
+        std::scoped_lock g(m_Mutex);
+
+        if ( m_aState != SAXDocumentBuilderState_BUILDING_DOCUMENT &&
+             m_aState != SAXDocumentBuilderState_BUILDING_FRAGMENT)
+        {
+            throw SAXException();
+        }
+
+        Reference< XElement > aElement;
+        if ( !rNamespace.isEmpty() )
+            aElement = m_aDocument->createElementNS( rNamespace, rName );
+        else
+            aElement = m_aDocument->createElement( rName );
+
+        aElement.set( m_aNodeStack.top()->appendChild(aElement), UNO_QUERY);
+        m_aNodeStack.push(aElement);
+
+        if (!xAttribs.is())
+            return;
+
+        setElementFastAttributes(aElement, xAttribs);
+        const Sequence< css::xml::Attribute > unknownAttribs = xAttribs->getUnknownAttributes();
+        for ( const auto& rUnknownAttrib : unknownAttribs )
+        {
+            const OUString& rAttrValue = rUnknownAttrib.Value;
+            const OUString& rAttrName = rUnknownAttrib.Name;
+            const OUString& rAttrNamespace = rUnknownAttrib.NamespaceURL;
+            if ( !rAttrNamespace.isEmpty() )
+                aElement->setAttributeNS( rAttrNamespace, rAttrName, rAttrValue );
+            else
+                aElement->setAttribute( rAttrName, rAttrValue );
+        }
+    }
+
+    void CSAXDocumentBuilder::setElementFastAttributes(const Reference< XElement >& aElement, const Reference< XFastAttributeList >& xAttribs)
+    {
+        for (auto &it : sax_fastparser::castToFastAttributeList( xAttribs ))
+        {
+            sal_Int32 nAttrToken = it.getToken();
+            const OUString& aAttrPrefix(SvXMLImport::getNamespacePrefixFromToken(nAttrToken, nullptr));
+            const OUString& aAttrURI( SvXMLImport::getNamespaceURIFromToken( nAttrToken ) );
+            OUString aAttrQualifiedName( SvXMLImport::getNameFromToken( nAttrToken ) );
+            if( !aAttrPrefix.isEmpty() )
+                aAttrQualifiedName = aAttrPrefix + SvXMLImport::aNamespaceSeparator + aAttrQualifiedName;
+
+            if ( !aAttrURI.isEmpty() )
+                aElement->setAttributeNS( aAttrURI, aAttrQualifiedName, it.toString() );
+            else
+                aElement->setAttribute( aAttrQualifiedName, it.toString() );
+        }
+    }
+
+    void SAL_CALL CSAXDocumentBuilder::endFastElement( sal_Int32 nElement )
+    {
+        std::scoped_lock g(m_Mutex);
+
+        // pop the current element from the stack
+        if ( m_aState != SAXDocumentBuilderState_BUILDING_DOCUMENT &&
+             m_aState != SAXDocumentBuilderState_BUILDING_FRAGMENT)
+            throw SAXException();
+
+        Reference< XNode > aNode(m_aNodeStack.top());
+        if (aNode->getNodeType() != NodeType_ELEMENT_NODE)
+            throw SAXException();
+
+        Reference< XElement > aElement(aNode, UNO_QUERY);
+        if( aElement->getPrefix() != SvXMLImport::getNamespacePrefixFromToken(nElement, nullptr) ||
+            aElement->getTagName() != SvXMLImport::getNameFromToken( nElement ) ) // consistency check
+            throw SAXException();
+
+        // pop it
+        m_aNodeStack.pop();
+    }
+
+
+    void SAL_CALL CSAXDocumentBuilder::endUnknownElement( const OUString& /*rNamespace*/, const OUString& rName )
+    {
+        std::scoped_lock g(m_Mutex);
+
+        // pop the current element from the stack
+        if ( m_aState != SAXDocumentBuilderState_BUILDING_DOCUMENT &&
+             m_aState != SAXDocumentBuilderState_BUILDING_FRAGMENT)
+            throw SAXException();
+
+        Reference< XNode > aNode(m_aNodeStack.top());
+        if (aNode->getNodeType() != NodeType_ELEMENT_NODE)
+            throw SAXException();
+
+        Reference< XElement > aElement(aNode, UNO_QUERY);
+        OUString aRefName;
+        const OUString& aPrefix = aElement->getPrefix();
+        if (!aPrefix.isEmpty())
+            aRefName = aPrefix + SvXMLImport::aNamespaceSeparator + aElement->getTagName();
+        else
+            aRefName = aElement->getTagName();
+        if (aRefName != rName) // consistency check
+            throw SAXException();
+
+        // pop it
+        m_aNodeStack.pop();
+    }
+
+    Reference< XFastContextHandler > SAL_CALL CSAXDocumentBuilder::createFastChildContext( sal_Int32/* nElement */, const Reference< XFastAttributeList >&/* xAttribs */ )
+    {
+        return nullptr;
+    }
+
+
+    Reference< XFastContextHandler > SAL_CALL CSAXDocumentBuilder::createUnknownChildContext( const OUString&/* rNamespace */, const OUString&/* rName */, const Reference< XFastAttributeList >&/* xAttribs */ )
+    {
+        return nullptr;
+    }
+
+    void SAL_CALL CSAXDocumentBuilder::characters( const OUString& rChars )
+    {
+        std::scoped_lock g(m_Mutex);
+
+        //  append text node to the current top element
+        if (m_aState != SAXDocumentBuilderState_BUILDING_DOCUMENT &&
+             m_aState != SAXDocumentBuilderState_BUILDING_FRAGMENT)
+            throw SAXException();
+
+        Reference< XText > aText = m_aDocument->createTextNode(rChars);
+        m_aNodeStack.top()->appendChild(aText);
+    }
+}
+
+extern "C" SAL_DLLPUBLIC_EXPORT css::uno::XInterface*
+unoxml_CSAXDocumentBuilder_get_implementation(
+    css::uno::XComponentContext* context , css::uno::Sequence<css::uno::Any> const&)
+{
+    return cppu::acquire(new DOM::CSAXDocumentBuilder(context));
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/unoxml/source/dom/saxbuilder.hxx b/unoxml/source/dom/saxbuilder.hxx
new file mode 100644
index 0000000000..83b82912e6
--- /dev/null
+++ b/unoxml/source/dom/saxbuilder.hxx
@@ -0,0 +1,92 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#pragma once
+
+#include <mutex>
+#include <stack>
+
+#include <sal/types.h>
+#include <cppuhelper/implbase.hxx>
+#include <com/sun/star/uno/Reference.h>
+#include <com/sun/star/uno/Sequence.h>
+
+#include <com/sun/star/xml/dom/XSAXDocumentBuilder2.hpp>
+#include <com/sun/star/xml/dom/SAXDocumentBuilderState.hpp>
+#include <com/sun/star/xml/dom/XDocument.hpp>
+#include <com/sun/star/xml/dom/XDocumentFragment.hpp>
+#include <com/sun/star/xml/sax/XLocator.hpp>
+#include <com/sun/star/lang/XServiceInfo.hpp>
+#include <com/sun/star/uno/XComponentContext.hpp>
+
+namespace DOM
+{
+    class  CSAXDocumentBuilder
+        : public ::cppu::WeakImplHelper< css::xml::dom::XSAXDocumentBuilder2, css::lang::XServiceInfo >
+    {
+
+    private:
+        std::mutex m_Mutex;
+        const css::uno::Reference< css::uno::XComponentContext> m_xContext;
+
+        css::xml::dom::SAXDocumentBuilderState m_aState;
+        std::stack< css::uno::Reference< css::xml::dom::XNode > > m_aNodeStack;
+
+        css::uno::Reference< css::xml::dom::XDocument > m_aDocument;
+        css::uno::Reference< css::xml::dom::XDocumentFragment > m_aFragment;
+
+
+    public:
+        explicit CSAXDocumentBuilder(const css::uno::Reference< css::uno::XComponentContext >& );
+        static void setElementFastAttributes(const css::uno::Reference< css::xml::dom::XElement >& aElement, const css::uno::Reference< css::xml::sax::XFastAttributeList >& xAttribs);
+
+
+        // XServiceInfo
+        virtual OUString SAL_CALL getImplementationName() override;
+        virtual sal_Bool SAL_CALL supportsService(const OUString& ServiceName) override;
+        virtual css::uno::Sequence< OUString > SAL_CALL getSupportedServiceNames () override;
+
+        // XFastDocumentHandler
+        virtual void SAL_CALL startDocument() override;
+        virtual void SAL_CALL endDocument() override;
+        virtual void SAL_CALL processingInstruction( const OUString& rTarget, const OUString& rData ) override;
+        virtual void SAL_CALL setDocumentLocator( const css::uno::Reference< css::xml::sax::XLocator >& xLocator ) override;
+
+        // XFastContextHandler
+        virtual void SAL_CALL startFastElement( sal_Int32 nElement, const css::uno::Reference< css::xml::sax::XFastAttributeList >& Attribs ) override;
+        virtual void SAL_CALL startUnknownElement( const OUString& Namespace, const OUString& Name, const css::uno::Reference< css::xml::sax::XFastAttributeList >& Attribs ) override;
+        virtual void SAL_CALL endFastElement( sal_Int32 Element ) override;
+        virtual void SAL_CALL endUnknownElement( const OUString& Namespace, const OUString& Name ) override;
+        virtual css::uno::Reference< XFastContextHandler > SAL_CALL createFastChildContext( sal_Int32 nElement, const css::uno::Reference< css::xml::sax::XFastAttributeList >& Attribs ) override;
+        virtual css::uno::Reference< XFastContextHandler > SAL_CALL createUnknownChildContext( const OUString& Namespace, const OUString& Name, const css::uno::Reference< css::xml::sax::XFastAttributeList >& Attribs ) override;
+        virtual void SAL_CALL characters( const OUString& aChars ) override;
+
+        // XSAXDocumentBuilder
+        virtual css::xml::dom::SAXDocumentBuilderState SAL_CALL getState() override;
+        virtual void SAL_CALL reset() override;
+        virtual css::uno::Reference< css::xml::dom::XDocument > SAL_CALL getDocument() override;
+        virtual css::uno::Reference< css::xml::dom::XDocumentFragment > SAL_CALL getDocumentFragment() override;
+        virtual void SAL_CALL startDocumentFragment(const css::uno::Reference< css::xml::dom::XDocument >& ownerDoc) override;
+        virtual void SAL_CALL endDocumentFragment() override;
+
+
+    };
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/unoxml/source/dom/text.cxx b/unoxml/source/dom/text.cxx
new file mode 100644
index 0000000000..08db01ba32
--- /dev/null
+++ b/unoxml/source/dom/text.cxx
@@ -0,0 +1,73 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include "text.hxx"
+
+#include <osl/diagnose.h>
+
+using namespace css::uno;
+using namespace css::xml::dom;
+using namespace css::xml::sax;
+
+namespace DOM
+{
+    CText::CText(CDocument const& rDocument, ::osl::Mutex const& rMutex,
+            NodeType const& reNodeType, xmlNodePtr const& rpNode)
+        : CText_Base(rDocument, rMutex, reNodeType, rpNode)
+    {
+    }
+
+    CText::CText(CDocument const& rDocument, ::osl::Mutex const& rMutex,
+            xmlNodePtr const pNode)
+        : CText_Base(rDocument, rMutex, NodeType_TEXT_NODE, pNode)
+    {
+    }
+
+    void CText::saxify(
+            const Reference< XDocumentHandler >& i_xHandler) {
+        if (!i_xHandler.is()) throw RuntimeException();
+        i_xHandler->characters(getData());
+    }
+
+    void CText::fastSaxify( Context& io_rContext )
+    {
+        if (io_rContext.mxCurrentHandler.is())
+        {
+            try
+            {
+                io_rContext.mxCurrentHandler->characters( getData() );
+            }
+            catch( Exception& )
+            {}
+        }
+    }
+
+    OUString SAL_CALL CText::getNodeName()
+    {
+        return "#text";
+    }
+
+    Reference< XText > SAL_CALL CText::splitText(sal_Int32 /*offset*/)
+    {
+        OSL_FAIL("CText::splitText: not implemented (#i113683#)");
+        return Reference< XText >(this);
+    }
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/unoxml/source/dom/text.hxx b/unoxml/source/dom/text.hxx
new file mode 100644
index 0000000000..d594b15866
--- /dev/null
+++ b/unoxml/source/dom/text.hxx
@@ -0,0 +1,203 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#pragma once
+
+#include <libxml/tree.h>
+
+#include <sal/types.h>
+
+#include <cppuhelper/implbase.hxx>
+
+#include <com/sun/star/uno/Reference.h>
+#include <com/sun/star/xml/dom/XNode.hpp>
+#include <com/sun/star/xml/dom/XText.hpp>
+
+#include "characterdata.hxx"
+
+namespace DOM
+{
+    typedef ::cppu::ImplInheritanceHelper< CCharacterData, css::xml::dom::XText > CText_Base;
+
+    class CText
+        : public CText_Base
+    {
+    private:
+        friend class CDocument;
+
+    protected:
+        CText(CDocument const& rDocument, ::osl::Mutex const& rMutex,
+                css::xml::dom::NodeType const& reNodeType, xmlNodePtr const& rpNode);
+        CText(CDocument const& rDocument, ::osl::Mutex const& rMutex,
+                xmlNodePtr const pNode);
+
+    public:
+
+        virtual void saxify(const css::uno::Reference< css::xml::sax::XDocumentHandler >& i_xHandler) override;
+
+        virtual void fastSaxify( Context& io_rContext ) override;
+
+         // Breaks this node into two nodes at the specified offset, keeping
+         // both in the tree as siblings.
+         virtual css::uno::Reference< css::xml::dom::XText > SAL_CALL splitText(sal_Int32 offset) override;
+
+
+         // --- delegations for XCharacterData
+        virtual void SAL_CALL appendData(const OUString& arg) override
+        {
+            CCharacterData::appendData(arg);
+        }
+        virtual void SAL_CALL deleteData(sal_Int32 offset, sal_Int32 count) override
+        {
+            CCharacterData::deleteData(offset, count);
+        }
+        virtual OUString SAL_CALL getData() override
+        {
+            return CCharacterData::getData();
+        }
+        virtual sal_Int32 SAL_CALL getLength() override
+        {
+            return CCharacterData::getLength();
+        }
+        virtual void SAL_CALL insertData(sal_Int32 offset, const OUString& arg) override
+        {
+            CCharacterData::insertData(offset, arg);
+        }
+        virtual void SAL_CALL replaceData(sal_Int32 offset, sal_Int32 count, const OUString& arg) override
+        {
+            CCharacterData::replaceData(offset, count, arg);
+        }
+        virtual void SAL_CALL setData(const OUString& data) override
+        {
+            CCharacterData::setData(data);
+        }
+        virtual OUString SAL_CALL subStringData(sal_Int32 offset, sal_Int32 count) override
+        {
+            return CCharacterData::subStringData(offset, count);
+        }
+
+
+         // --- overrides for XNode base
+        virtual OUString SAL_CALL getNodeName() override;
+
+        // --- resolve uno inheritance problems...
+        // --- delegation for XNode base.
+        virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL appendChild(const css::uno::Reference< css::xml::dom::XNode >& newChild) override
+        {
+            return CCharacterData::appendChild(newChild);
+        }
+        virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL cloneNode(sal_Bool deep) override
+        {
+            return CCharacterData::cloneNode(deep);
+        }
+        virtual css::uno::Reference< css::xml::dom::XNamedNodeMap > SAL_CALL getAttributes() override
+        {
+            return CCharacterData::getAttributes();
+        }
+        virtual css::uno::Reference< css::xml::dom::XNodeList > SAL_CALL getChildNodes() override
+        {
+            return CCharacterData::getChildNodes();
+        }
+        virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL getFirstChild() override
+        {
+            return CCharacterData::getFirstChild();
+        }
+        virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL getLastChild() override
+        {
+            return CCharacterData::getLastChild();
+        }
+        virtual OUString SAL_CALL getLocalName() override
+        {
+            return CCharacterData::getLocalName();
+        }
+        virtual OUString SAL_CALL getNamespaceURI() override
+        {
+            return CCharacterData::getNamespaceURI();
+        }
+        virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL getNextSibling() override
+        {
+            return CCharacterData::getNextSibling();
+        }
+        virtual css::xml::dom::NodeType SAL_CALL getNodeType() override
+        {
+            return CCharacterData::getNodeType();
+        }
+        virtual OUString SAL_CALL getNodeValue() override
+        {
+            return CCharacterData::getNodeValue();
+        }
+        virtual css::uno::Reference< css::xml::dom::XDocument > SAL_CALL getOwnerDocument() override
+        {
+            return CCharacterData::getOwnerDocument();
+        }
+        virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL getParentNode() override
+        {
+            return CCharacterData::getParentNode();
+        }
+        virtual OUString SAL_CALL getPrefix() override
+        {
+            return CCharacterData::getPrefix();
+        }
+        virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL getPreviousSibling() override
+        {
+            return CCharacterData::getPreviousSibling();
+        }
+        virtual sal_Bool SAL_CALL hasAttributes() override
+        {
+            return CCharacterData::hasAttributes();
+        }
+        virtual sal_Bool SAL_CALL hasChildNodes() override
+        {
+            return CCharacterData::hasChildNodes();
+        }
+        virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL insertBefore(
+                const css::uno::Reference< css::xml::dom::XNode >& newChild, const css::uno::Reference< css::xml::dom::XNode >& refChild) override
+        {
+            return CCharacterData::insertBefore(newChild, refChild);
+        }
+        virtual sal_Bool SAL_CALL isSupported(const OUString& feature, const OUString& ver) override
+        {
+            return CCharacterData::isSupported(feature, ver);
+        }
+        virtual void SAL_CALL normalize() override
+        {
+            CCharacterData::normalize();
+        }
+        virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL removeChild(const css::uno::Reference< css::xml::dom::XNode >& oldChild) override
+        {
+            return CCharacterData::removeChild(oldChild);
+        }
+        virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL replaceChild(
+                const css::uno::Reference< css::xml::dom::XNode >& newChild, const css::uno::Reference< css::xml::dom::XNode >& oldChild) override
+        {
+            return CCharacterData::replaceChild(newChild, oldChild);
+        }
+        virtual void SAL_CALL setNodeValue(const OUString& nodeValue) override
+        {
+            return CCharacterData::setNodeValue(nodeValue);
+        }
+        virtual void SAL_CALL setPrefix(const OUString& prefix) override
+        {
+            return CCharacterData::setPrefix(prefix);
+        }
+
+    };
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/unoxml/source/events/event.cxx b/unoxml/source/events/event.cxx
new file mode 100644
index 0000000000..e3b092ff38
--- /dev/null
+++ b/unoxml/source/events/event.cxx
@@ -0,0 +1,108 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <event.hxx>
+
+using namespace css::uno;
+using namespace css::xml::dom::events;
+
+namespace DOM::events
+{
+
+    CEvent::CEvent()
+        : m_canceled(false)
+        , m_phase(PhaseType_CAPTURING_PHASE)
+        , m_bubbles(false)
+        , m_cancelable(true)
+    {
+    }
+
+    CEvent::~CEvent()
+    {
+    }
+
+    OUString SAL_CALL CEvent::getType()
+    {
+        std::unique_lock const g(m_Mutex);
+        return m_eventType;
+    }
+
+    Reference< XEventTarget > SAL_CALL
+    CEvent::getTarget()
+    {
+        std::unique_lock const g(m_Mutex);
+        return m_target;
+    }
+
+    Reference< XEventTarget > SAL_CALL
+    CEvent::getCurrentTarget()
+    {
+        std::unique_lock const g(m_Mutex);
+        return m_currentTarget;
+    }
+
+    PhaseType SAL_CALL CEvent::getEventPhase()
+    {
+        std::unique_lock const g(m_Mutex);
+        return m_phase;
+    }
+
+    sal_Bool SAL_CALL CEvent::getBubbles()
+    {
+        std::unique_lock const g(m_Mutex);
+        return m_bubbles;
+    }
+
+    sal_Bool SAL_CALL CEvent::getCancelable()
+    {
+        std::unique_lock const g(m_Mutex);
+        return m_cancelable;
+    }
+
+    css::util::Time SAL_CALL
+    CEvent::getTimeStamp()
+    {
+        std::unique_lock const g(m_Mutex);
+        return m_time;
+    }
+
+    void SAL_CALL CEvent::stopPropagation()
+    {
+        std::unique_lock const g(m_Mutex);
+        if (m_cancelable) { m_canceled = true; }
+    }
+
+    void SAL_CALL CEvent::preventDefault()
+    {
+    }
+
+    void SAL_CALL
+    CEvent::initEvent(OUString const& eventTypeArg, sal_Bool canBubbleArg,
+        sal_Bool cancelableArg)
+    {
+        std::unique_lock const g(m_Mutex);
+
+        m_eventType = eventTypeArg;
+        m_bubbles = canBubbleArg;
+        m_cancelable = cancelableArg;
+    }
+
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/unoxml/source/events/eventdispatcher.cxx b/unoxml/source/events/eventdispatcher.cxx
new file mode 100644
index 0000000000..201f682f7d
--- /dev/null
+++ b/unoxml/source/events/eventdispatcher.cxx
@@ -0,0 +1,251 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <eventdispatcher.hxx>
+
+#include <event.hxx>
+#include <mutationevent.hxx>
+#include <uievent.hxx>
+#include <mouseevent.hxx>
+
+#include "../dom/document.hxx"
+
+#include <osl/mutex.hxx>
+
+using namespace css::uno;
+using namespace css::xml::dom;
+using namespace css::xml::dom::events;
+
+namespace DOM::events {
+
+    void CEventDispatcher::addListener(xmlNodePtr pNode, const OUString& aType, const Reference<XEventListener>& aListener, bool bCapture)
+    {
+        TypeListenerMap *const pTMap = bCapture
+            ? (& m_CaptureListeners) : (& m_TargetListeners);
+
+        // get the multimap for the specified type
+        ListenerMap *pMap = nullptr;
+        auto tIter = pTMap->find(aType);
+        if (tIter == pTMap->end()) {
+            // the map has to be created
+            auto const pair = pTMap->emplace(aType, ListenerMap());
+            pMap = & pair.first->second;
+        } else {
+            pMap = & tIter->second;
+        }
+        assert(pMap != nullptr);
+        pMap->emplace(pNode, aListener);
+    }
+
+    void CEventDispatcher::removeListener(xmlNodePtr pNode, const OUString& aType, const Reference<XEventListener>& aListener, bool bCapture)
+    {
+        TypeListenerMap *const pTMap = bCapture
+            ? (& m_CaptureListeners) : (& m_TargetListeners);
+
+        // get the multimap for the specified type
+        auto tIter = pTMap->find(aType);
+        if (tIter == pTMap->end())
+            return;
+
+        ListenerMap & rMap = tIter->second;
+        // find listeners of specified type for specified node
+        ListenerMap::iterator iter = rMap.find(pNode);
+        while (iter != rMap.end() && iter->first == pNode)
+        {
+            // erase all references to specified listener
+            if (iter->second.is() && iter->second == aListener)
+            {
+                iter = rMap.erase(iter);
+            }
+            else
+                ++iter;
+        }
+    }
+
+    CEventDispatcher::~CEventDispatcher()
+    {
+    }
+
+    void CEventDispatcher::callListeners(
+            TypeListenerMap const& rTMap,
+            xmlNodePtr const pNode,
+            const OUString& aType, Reference< XEvent > const& xEvent)
+    {
+        // get the multimap for the specified type
+        TypeListenerMap::const_iterator tIter = rTMap.find(aType);
+        if (tIter != rTMap.end()) {
+            ListenerMap const& rMap = tIter->second;
+            auto iterRange = rMap.equal_range(pNode);
+            for( auto iter = iterRange.first; iter != iterRange.second; ++iter )
+            {
+                if(iter->second.is())
+                    (iter->second)->handleEvent(xEvent);
+            }
+        }
+    }
+
+    void CEventDispatcher::dispatchEvent(
+            DOM::CDocument & rDocument, ::osl::Mutex & rMutex,
+            xmlNodePtr const pNode, Reference<XNode> const& xNode,
+            Reference< XEvent > const& i_xEvent) const
+    {
+        TypeListenerMap captureListeners;
+        TypeListenerMap targetListeners;
+        {
+            ::osl::MutexGuard g(rMutex);
+
+            captureListeners = m_CaptureListeners;
+            targetListeners = m_TargetListeners;
+        }
+
+        if (captureListeners.empty() && targetListeners.empty())
+            return;
+
+        rtl::Reference<CEvent> pEvent; // pointer to internal event representation
+
+        OUString const aType = i_xEvent->getType();
+        if (aType == "DOMSubtreeModified"          ||
+            aType == "DOMNodeInserted"             ||
+            aType == "DOMNodeRemoved"              ||
+            aType == "DOMNodeRemovedFromDocument"  ||
+            aType == "DOMNodeInsertedIntoDocument" ||
+            aType == "DOMAttrModified"             ||
+            aType == "DOMCharacterDataModified"    )
+        {
+                Reference< XMutationEvent > const aMEvent(i_xEvent,
+                        UNO_QUERY_THROW);
+                // dispatch a mutation event
+                // we need to clone the event in order to have complete control
+                // over the implementation
+                rtl::Reference<CMutationEvent> pMEvent = new CMutationEvent;
+                pMEvent->initMutationEvent(
+                    aType, aMEvent->getBubbles(), aMEvent->getCancelable(),
+                    aMEvent->getRelatedNode(), aMEvent->getPrevValue(),
+                    aMEvent->getNewValue(), aMEvent->getAttrName(),
+                    aMEvent->getAttrChange());
+                pEvent = pMEvent;
+        } else if ( // UIEvent
+            aType == "DOMFocusIn"  ||
+            aType == "DOMFocusOut" ||
+            aType == "DOMActivate" )
+        {
+            Reference< XUIEvent > const aUIEvent(i_xEvent, UNO_QUERY_THROW);
+            rtl::Reference<CUIEvent> pUIEvent = new CUIEvent;
+            pUIEvent->initUIEvent(aType,
+                aUIEvent->getBubbles(), aUIEvent->getCancelable(),
+                aUIEvent->getView(), aUIEvent->getDetail());
+            pEvent = pUIEvent;
+        } else if ( // MouseEvent
+            aType == "click"     ||
+            aType == "mousedown" ||
+            aType == "mouseup"   ||
+            aType == "mouseover" ||
+            aType == "mousemove" ||
+            aType == "mouseout"  )
+        {
+            Reference< XMouseEvent > const aMouseEvent(i_xEvent,
+                    UNO_QUERY_THROW);
+            rtl::Reference<CMouseEvent> pMouseEvent = new CMouseEvent;
+            pMouseEvent->initMouseEvent(aType,
+                aMouseEvent->getBubbles(), aMouseEvent->getCancelable(),
+                aMouseEvent->getView(), aMouseEvent->getDetail(),
+                aMouseEvent->getScreenX(), aMouseEvent->getScreenY(),
+                aMouseEvent->getClientX(), aMouseEvent->getClientY(),
+                aMouseEvent->getCtrlKey(), aMouseEvent->getAltKey(),
+                aMouseEvent->getShiftKey(), aMouseEvent->getMetaKey(),
+                aMouseEvent->getButton(), aMouseEvent->getRelatedTarget());
+            pEvent = pMouseEvent;
+        }
+        else // generic event
+        {
+            pEvent = new CEvent;
+            pEvent->initEvent(
+                aType, i_xEvent->getBubbles(), i_xEvent->getCancelable());
+        }
+        pEvent->m_target.set(xNode, UNO_QUERY_THROW);
+        pEvent->m_currentTarget = i_xEvent->getCurrentTarget();
+        pEvent->m_time = i_xEvent->getTimeStamp();
+
+        // create the reference to the private event implementation
+        // that will be dispatched to the listeners
+        Reference< XEvent > const xEvent(pEvent);
+
+        // build the path from target node to the root
+        typedef std::vector< ::std::pair<Reference<XEventTarget>, xmlNodePtr> >
+            NodeVector_t;
+        NodeVector_t captureVector;
+        {
+            ::osl::MutexGuard g(rMutex);
+
+            xmlNodePtr cur = pNode;
+            while (cur != nullptr)
+            {
+                Reference< XEventTarget > const xRef(
+                        rDocument.GetCNode(cur));
+                captureVector.emplace_back(xRef, cur);
+                cur = cur->parent;
+            }
+        }
+
+        // the capture vector now holds the node path from target to root
+        // first we must search for capture listeners in order root to
+        // to target. after that, any target listeners have to be called
+        // then bubbeling phase listeners are called in target to root
+        // order
+        // start at the root
+        NodeVector_t::const_reverse_iterator rinode =
+            const_cast<NodeVector_t const&>(captureVector).rbegin();
+        if (rinode == const_cast<NodeVector_t const&>(captureVector).rend())
+            return;
+
+        // capturing phase:
+        pEvent->m_phase = PhaseType_CAPTURING_PHASE;
+        while (rinode !=
+                const_cast<NodeVector_t const&>(captureVector).rend())
+        {
+            pEvent->m_currentTarget = rinode->first;
+            callListeners(captureListeners, rinode->second, aType, xEvent);
+            if  (pEvent->m_canceled) return;
+            ++rinode;
+        }
+
+        NodeVector_t::const_iterator inode = captureVector.begin();
+
+        // target phase
+        pEvent->m_phase = PhaseType_AT_TARGET;
+        pEvent->m_currentTarget = inode->first;
+        callListeners(targetListeners, inode->second, aType, xEvent);
+        if  (pEvent->m_canceled) return;
+        // bubbeling phase
+        ++inode;
+        if (i_xEvent->getBubbles()) {
+            pEvent->m_phase = PhaseType_BUBBLING_PHASE;
+            while (inode != captureVector.end())
+            {
+                pEvent->m_currentTarget = inode->first;
+                callListeners(targetListeners,
+                        inode->second, aType, xEvent);
+                if  (pEvent->m_canceled) return;
+                ++inode;
+            }
+        }
+    }
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/unoxml/source/events/mouseevent.cxx b/unoxml/source/events/mouseevent.cxx
new file mode 100644
index 0000000000..4ae8a1b557
--- /dev/null
+++ b/unoxml/source/events/mouseevent.cxx
@@ -0,0 +1,194 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <mouseevent.hxx>
+
+using namespace css::uno;
+using namespace css::xml::dom::events;
+using namespace css::xml::dom::views;
+
+namespace DOM::events
+{
+    CMouseEvent::CMouseEvent()
+        : m_screenX(0)
+        , m_screenY(0)
+        , m_clientX(0)
+        , m_clientY(0)
+        , m_ctrlKey(false)
+        , m_shiftKey(false)
+        , m_altKey(false)
+        , m_metaKey(false)
+        , m_button(0)
+    {
+    }
+
+    sal_Int32 SAL_CALL CMouseEvent::getScreenX()
+    {
+        std::unique_lock const g(m_Mutex);
+        return m_screenX;
+    }
+    sal_Int32 SAL_CALL CMouseEvent::getScreenY()
+    {
+        std::unique_lock const g(m_Mutex);
+        return m_screenY;
+    }
+    sal_Int32 SAL_CALL CMouseEvent::getClientX()
+    {
+        std::unique_lock const g(m_Mutex);
+        return m_clientX;
+    }
+    sal_Int32 SAL_CALL CMouseEvent::getClientY()
+    {
+        std::unique_lock const g(m_Mutex);
+        return m_clientY;
+    }
+    sal_Bool SAL_CALL CMouseEvent::getCtrlKey()
+    {
+        std::unique_lock const g(m_Mutex);
+        return m_ctrlKey;
+    }
+    sal_Bool SAL_CALL CMouseEvent::getShiftKey()
+    {
+        std::unique_lock const g(m_Mutex);
+        return m_shiftKey;
+    }
+    sal_Bool SAL_CALL CMouseEvent::getAltKey()
+    {
+        std::unique_lock const g(m_Mutex);
+        return m_altKey;
+    }
+    sal_Bool SAL_CALL CMouseEvent::getMetaKey()
+    {
+        std::unique_lock const g(m_Mutex);
+        return m_metaKey;
+    }
+    sal_Int16 SAL_CALL CMouseEvent::getButton()
+    {
+        std::unique_lock const g(m_Mutex);
+        return m_button;
+    }
+    Reference< XEventTarget > SAL_CALL CMouseEvent::getRelatedTarget()
+    {
+        return Reference< XEventTarget >();
+    }
+
+    void SAL_CALL CMouseEvent::initMouseEvent(
+                        const OUString& typeArg,
+                        sal_Bool canBubbleArg,
+                        sal_Bool cancelableArg,
+                        const Reference< XAbstractView >& viewArg,
+                        sal_Int32 detailArg,
+                        sal_Int32 screenXArg,
+                        sal_Int32 screenYArg,
+                        sal_Int32 clientXArg,
+                        sal_Int32 clientYArg,
+                        sal_Bool ctrlKeyArg,
+                        sal_Bool altKeyArg,
+                        sal_Bool shiftKeyArg,
+                        sal_Bool metaKeyArg,
+                        sal_Int16 buttonArg,
+                        const Reference< XEventTarget >& /*relatedTargetArg*/)
+    {
+        CUIEvent::initUIEvent(typeArg, canBubbleArg, cancelableArg, viewArg, detailArg);
+        std::unique_lock const g(m_Mutex);
+        m_screenX = screenXArg;
+        m_screenY = screenYArg;
+        m_clientX = clientXArg;
+        m_clientY = clientYArg;
+        m_ctrlKey = ctrlKeyArg;
+        m_altKey = altKeyArg;
+        m_shiftKey = shiftKeyArg;
+        m_metaKey = metaKeyArg;
+        m_button = buttonArg;
+    }
+
+    // delegate to CUIEvent, since we are inheriting from CUIEvent and XUIEvent
+    Reference< XAbstractView > SAL_CALL CMouseEvent::getView()
+    {
+        return CUIEvent::getView();
+    }
+
+    sal_Int32 SAL_CALL CMouseEvent::getDetail()
+    {
+        return CUIEvent::getDetail();
+    }
+
+    void SAL_CALL CMouseEvent::initUIEvent(const OUString& typeArg,
+                     sal_Bool canBubbleArg,
+                     sal_Bool cancelableArg,
+                     const Reference< XAbstractView >& viewArg,
+                     sal_Int32 detailArg)
+    {
+        CUIEvent::initUIEvent(typeArg, canBubbleArg, cancelableArg, viewArg, detailArg);
+    }
+
+    OUString SAL_CALL CMouseEvent::getType()
+    {
+        return CUIEvent::getType();
+    }
+
+    Reference< XEventTarget > SAL_CALL CMouseEvent::getTarget()
+    {
+        return CUIEvent::getTarget();
+    }
+
+    Reference< XEventTarget > SAL_CALL CMouseEvent::getCurrentTarget()
+    {
+        return CUIEvent::getCurrentTarget();
+    }
+
+    PhaseType SAL_CALL CMouseEvent::getEventPhase()
+    {
+        return CUIEvent::getEventPhase();
+    }
+
+    sal_Bool SAL_CALL CMouseEvent::getBubbles()
+    {
+        return CEvent::getBubbles();
+    }
+
+    sal_Bool SAL_CALL CMouseEvent::getCancelable()
+    {
+        return CUIEvent::getCancelable();
+    }
+
+    css::util::Time SAL_CALL CMouseEvent::getTimeStamp()
+    {
+        return CUIEvent::getTimeStamp();
+    }
+
+    void SAL_CALL CMouseEvent::stopPropagation()
+    {
+        CUIEvent::stopPropagation();
+    }
+
+    void SAL_CALL CMouseEvent::preventDefault()
+    {
+        CUIEvent::preventDefault();
+    }
+
+    void SAL_CALL CMouseEvent::initEvent(const OUString& eventTypeArg, sal_Bool canBubbleArg,
+        sal_Bool cancelableArg)
+    {
+        // base initializer
+        CUIEvent::initEvent(eventTypeArg, canBubbleArg, cancelableArg);
+    }
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/unoxml/source/events/mutationevent.cxx b/unoxml/source/events/mutationevent.cxx
new file mode 100644
index 0000000000..8ef91f0e31
--- /dev/null
+++ b/unoxml/source/events/mutationevent.cxx
@@ -0,0 +1,137 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <mutationevent.hxx>
+
+using namespace css::uno;
+using namespace css::xml::dom;
+using namespace css::xml::dom::events;
+
+namespace DOM::events
+{
+    CMutationEvent::CMutationEvent()
+        : m_attrChangeType(AttrChangeType_MODIFICATION)
+    {
+    }
+
+    CMutationEvent::~CMutationEvent()
+    {
+    }
+
+    Reference< XNode > SAL_CALL CMutationEvent::getRelatedNode()
+    {
+        std::unique_lock const g(m_Mutex);
+        return m_relatedNode;
+    }
+
+    OUString SAL_CALL CMutationEvent::getPrevValue()
+    {
+        std::unique_lock const g(m_Mutex);
+        return m_prevValue;
+    }
+
+    OUString SAL_CALL CMutationEvent::getNewValue()
+    {
+        std::unique_lock const g(m_Mutex);
+        return m_newValue;
+    }
+
+    OUString SAL_CALL CMutationEvent::getAttrName()
+    {
+        std::unique_lock const g(m_Mutex);
+        return m_attrName;
+    }
+
+    AttrChangeType SAL_CALL CMutationEvent::getAttrChange()
+    {
+        std::unique_lock const g(m_Mutex);
+        return m_attrChangeType;
+    }
+
+    void SAL_CALL CMutationEvent::initMutationEvent(const OUString& typeArg,
+        sal_Bool canBubbleArg, sal_Bool cancelableArg,
+        const Reference< XNode >& relatedNodeArg, const OUString& prevValueArg,
+        const OUString& newValueArg, const OUString& attrNameArg,
+        AttrChangeType attrChangeArg)
+    {
+        CEvent::initEvent(typeArg, canBubbleArg, cancelableArg);
+
+        std::unique_lock const g(m_Mutex);
+
+        m_relatedNode = relatedNodeArg;
+        m_prevValue = prevValueArg;
+        m_newValue = newValueArg;
+        m_attrName = attrNameArg;
+        m_attrChangeType = attrChangeArg;
+    }
+
+    // delegate to CEvent, since we are inheriting from CEvent and XEvent
+    OUString SAL_CALL CMutationEvent::getType()
+    {
+        return CEvent::getType();
+    }
+
+    Reference< XEventTarget > SAL_CALL CMutationEvent::getTarget()
+    {
+        return CEvent::getTarget();
+    }
+
+    Reference< XEventTarget > SAL_CALL CMutationEvent::getCurrentTarget()
+    {
+        return CEvent::getCurrentTarget();
+    }
+
+    PhaseType SAL_CALL CMutationEvent::getEventPhase()
+    {
+        return CEvent::getEventPhase();
+    }
+
+    sal_Bool SAL_CALL CMutationEvent::getBubbles()
+    {
+        return CEvent::getBubbles();
+    }
+
+    sal_Bool SAL_CALL CMutationEvent::getCancelable()
+    {
+        return CEvent::getCancelable();
+    }
+
+    css::util::Time SAL_CALL CMutationEvent::getTimeStamp()
+    {
+        return CEvent::getTimeStamp();
+    }
+
+    void SAL_CALL CMutationEvent::stopPropagation()
+    {
+        CEvent::stopPropagation();
+    }
+    void SAL_CALL CMutationEvent::preventDefault()
+    {
+        CEvent::preventDefault();
+    }
+
+    void SAL_CALL CMutationEvent::initEvent(const OUString& eventTypeArg, sal_Bool canBubbleArg,
+        sal_Bool cancelableArg)
+    {
+        // base initializer
+        CEvent::initEvent(eventTypeArg, canBubbleArg, cancelableArg);
+    }
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/unoxml/source/events/uievent.cxx b/unoxml/source/events/uievent.cxx
new file mode 100644
index 0000000000..be61ca5cf3
--- /dev/null
+++ b/unoxml/source/events/uievent.cxx
@@ -0,0 +1,113 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <uievent.hxx>
+
+using namespace css::uno;
+using namespace css::xml::dom::events;
+using namespace css::xml::dom::views;
+
+namespace DOM::events
+{
+    CUIEvent::CUIEvent()
+        : m_detail(0)
+    {
+    }
+
+    Reference< XAbstractView > SAL_CALL
+    CUIEvent::getView()
+    {
+        std::unique_lock const g(m_Mutex);
+        return m_view;
+    }
+
+    sal_Int32 SAL_CALL CUIEvent::getDetail()
+    {
+        std::unique_lock const g(m_Mutex);
+        return m_detail;
+    }
+
+    void SAL_CALL CUIEvent::initUIEvent(const OUString& typeArg,
+                     sal_Bool canBubbleArg,
+                     sal_Bool cancelableArg,
+                     const Reference< XAbstractView >& viewArg,
+                     sal_Int32 detailArg)
+    {
+        CEvent::initEvent(typeArg, canBubbleArg, cancelableArg);
+        std::unique_lock const g(m_Mutex);
+        m_view = viewArg;
+        m_detail = detailArg;
+    }
+
+
+    // delegate to CEvent, since we are inheriting from CEvent and XEvent
+    OUString SAL_CALL CUIEvent::getType()
+    {
+        return CEvent::getType();
+    }
+
+    Reference< XEventTarget > SAL_CALL CUIEvent::getTarget()
+    {
+        return CEvent::getTarget();
+    }
+
+    Reference< XEventTarget > SAL_CALL CUIEvent::getCurrentTarget()
+    {
+        return CEvent::getCurrentTarget();
+    }
+
+    PhaseType SAL_CALL CUIEvent::getEventPhase()
+    {
+        return CEvent::getEventPhase();
+    }
+
+    sal_Bool SAL_CALL CUIEvent::getBubbles()
+    {
+        return CEvent::getBubbles();
+    }
+
+    sal_Bool SAL_CALL CUIEvent::getCancelable()
+    {
+        // mutation events cannot be canceled
+        return false;
+    }
+
+    css::util::Time SAL_CALL CUIEvent::getTimeStamp()
+    {
+        return CEvent::getTimeStamp();
+    }
+
+    void SAL_CALL CUIEvent::stopPropagation()
+    {
+        CEvent::stopPropagation();
+    }
+    void SAL_CALL CUIEvent::preventDefault()
+    {
+        CEvent::preventDefault();
+    }
+
+    void SAL_CALL CUIEvent::initEvent(const OUString& eventTypeArg, sal_Bool canBubbleArg,
+        sal_Bool cancelableArg)
+    {
+        // base initializer
+        CEvent::initEvent(eventTypeArg, canBubbleArg, cancelableArg);
+    }
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/unoxml/source/rdf/CBlankNode.cxx b/unoxml/source/rdf/CBlankNode.cxx
new file mode 100644
index 0000000000..6e0140cc90
--- /dev/null
+++ b/unoxml/source/rdf/CBlankNode.cxx
@@ -0,0 +1,117 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <cppuhelper/implbase.hxx>
+#include <cppuhelper/supportsservice.hxx>
+#include <com/sun/star/lang/XServiceInfo.hpp>
+#include <com/sun/star/lang/XInitialization.hpp>
+#include <com/sun/star/rdf/XBlankNode.hpp>
+#include <com/sun/star/uno/XComponentContext.hpp>
+
+#include <com/sun/star/lang/IllegalArgumentException.hpp>
+
+
+/// anonymous implementation namespace
+namespace {
+
+class CBlankNode:
+    public ::cppu::WeakImplHelper<
+        css::lang::XServiceInfo,
+        css::lang::XInitialization,
+        css::rdf::XBlankNode>
+{
+public:
+    CBlankNode();
+
+    // css::lang::XServiceInfo:
+    virtual OUString SAL_CALL getImplementationName() override;
+    virtual sal_Bool SAL_CALL supportsService(const OUString & ServiceName) override;
+    virtual css::uno::Sequence< OUString > SAL_CALL getSupportedServiceNames() override;
+
+    // css::lang::XInitialization:
+    virtual void SAL_CALL initialize(const css::uno::Sequence< css::uno::Any > & aArguments) override;
+
+    // css::rdf::XNode:
+    virtual OUString SAL_CALL getStringValue() override;
+
+private:
+    CBlankNode(CBlankNode const&) = delete;
+    CBlankNode& operator=(CBlankNode const&) = delete;
+
+    OUString m_NodeID;
+};
+
+CBlankNode::CBlankNode()
+{}
+
+// com.sun.star.uno.XServiceInfo:
+OUString SAL_CALL CBlankNode::getImplementationName()
+{
+    return  "CBlankNode";
+}
+
+sal_Bool SAL_CALL CBlankNode::supportsService(OUString const & serviceName)
+{
+    return cppu::supportsService(this, serviceName);
+}
+
+css::uno::Sequence< OUString > SAL_CALL CBlankNode::getSupportedServiceNames()
+{
+    return { "com.sun.star.rdf.BlankNode" };
+}
+
+// css::lang::XInitialization:
+void SAL_CALL CBlankNode::initialize(const css::uno::Sequence< css::uno::Any > & aArguments)
+{
+    if (aArguments.getLength() != 1) {
+        throw css::lang::IllegalArgumentException(
+            "CBlankNode::initialize: must give exactly 1 argument", *this, 1);
+    }
+
+    OUString arg;
+    if (!(aArguments[0] >>= arg)) {
+        throw css::lang::IllegalArgumentException(
+            "CBlankNode::initialize: argument must be string", *this, 0);
+    }
+
+    //FIXME: what is legal?
+    if (arg.isEmpty()) {
+        throw css::lang::IllegalArgumentException(
+            "CBlankNode::initialize: argument is not valid blank node ID", *this, 0);
+    }
+    m_NodeID = arg;
+}
+
+// css::rdf::XNode:
+OUString SAL_CALL CBlankNode::getStringValue()
+{
+    return m_NodeID;
+}
+
+} // closing anonymous implementation namespace
+
+
+extern "C" SAL_DLLPUBLIC_EXPORT css::uno::XInterface*
+unoxml_CBlankNode_get_implementation(
+    css::uno::XComponentContext* , css::uno::Sequence<css::uno::Any> const&)
+{
+    return cppu::acquire(new CBlankNode());
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/unoxml/source/rdf/CLiteral.cxx b/unoxml/source/rdf/CLiteral.cxx
new file mode 100644
index 0000000000..b1c756883e
--- /dev/null
+++ b/unoxml/source/rdf/CLiteral.cxx
@@ -0,0 +1,167 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <cppuhelper/implbase.hxx>
+#include <cppuhelper/supportsservice.hxx>
+#include <com/sun/star/lang/XServiceInfo.hpp>
+#include <com/sun/star/lang/XInitialization.hpp>
+#include <com/sun/star/rdf/XLiteral.hpp>
+#include <com/sun/star/uno/XComponentContext.hpp>
+
+#include <com/sun/star/lang/IllegalArgumentException.hpp>
+
+
+/// anonymous implementation namespace
+namespace {
+
+class CLiteral:
+    public ::cppu::WeakImplHelper<
+        css::lang::XServiceInfo,
+        css::lang::XInitialization,
+        css::rdf::XLiteral>
+{
+public:
+    explicit CLiteral();
+
+    // css::lang::XServiceInfo:
+    virtual OUString SAL_CALL getImplementationName() override;
+    virtual sal_Bool SAL_CALL supportsService(const OUString & ServiceName) override;
+    virtual css::uno::Sequence< OUString > SAL_CALL getSupportedServiceNames() override;
+
+    // css::lang::XInitialization:
+    virtual void SAL_CALL initialize(const css::uno::Sequence< css::uno::Any > & aArguments) override;
+
+    // css::rdf::XNode:
+    virtual OUString SAL_CALL getStringValue() override;
+
+    // css::rdf::XLiteral:
+    virtual OUString SAL_CALL getValue() override;
+    virtual OUString SAL_CALL getLanguage() override;
+    virtual css::uno::Reference< css::rdf::XURI > SAL_CALL getDatatype() override;
+
+private:
+    CLiteral(CLiteral const&) = delete;
+    CLiteral& operator=(CLiteral const&) = delete;
+
+    OUString m_Value;
+    OUString m_Language;
+    css::uno::Reference< css::rdf::XURI > m_xDatatype;
+};
+
+CLiteral::CLiteral()
+{}
+
+// com.sun.star.uno.XServiceInfo:
+OUString SAL_CALL CLiteral::getImplementationName()
+{
+    return "CLiteral";
+}
+
+sal_Bool SAL_CALL CLiteral::supportsService(OUString const & serviceName)
+{
+    return cppu::supportsService(this, serviceName);
+}
+
+css::uno::Sequence< OUString > SAL_CALL CLiteral::getSupportedServiceNames()
+{
+    return { "com.sun.star.rdf.Literal" };
+}
+
+// css::lang::XInitialization:
+void SAL_CALL CLiteral::initialize(const css::uno::Sequence< css::uno::Any > & aArguments)
+{
+    const sal_Int32 len( aArguments.getLength() );
+    if (len < 1 || len > 2) {
+            throw css::lang::IllegalArgumentException(
+                "CLiteral::initialize: must give 1 or 2 argument(s)", *this, 2);
+    }
+
+    OUString arg0;
+    if (!(aArguments[0] >>= arg0)) {
+        throw css::lang::IllegalArgumentException(
+            "CLiteral::initialize: argument must be string", *this, 0);
+    }
+    //FIXME: what is legal?
+    if (!(true)) {
+        throw css::lang::IllegalArgumentException(
+            "CLiteral::initialize: argument is not valid literal value", *this, 0);
+    }
+    m_Value = arg0;
+
+    if (len <= 1)
+        return;
+
+    OUString arg1;
+    css::uno::Reference< css::rdf::XURI > xURI;
+    if (aArguments[1] >>= arg1) {
+        if (arg1.isEmpty()) {
+            throw css::lang::IllegalArgumentException(
+                "CLiteral::initialize: argument is not valid language", *this, 1);
+        }
+        m_Language = arg1;
+    } else if (aArguments[1] >>= xURI) {
+        if (!xURI.is()) {
+            throw css::lang::IllegalArgumentException(
+                "CLiteral::initialize: argument is null", *this, 1);
+        }
+        m_xDatatype = xURI;
+    } else {
+        throw css::lang::IllegalArgumentException(
+            "CLiteral::initialize: argument must be string or URI", *this, 1);
+    }
+}
+
+// css::rdf::XNode:
+OUString SAL_CALL CLiteral::getStringValue()
+{
+    if (!m_Language.isEmpty()) {
+        return m_Value + "@" + m_Language;
+    } else if (m_xDatatype.is()) {
+        return m_Value + "^^" +  m_xDatatype->getStringValue();
+    } else {
+        return m_Value;
+    }
+}
+
+// css::rdf::XLiteral:
+OUString SAL_CALL CLiteral::getValue()
+{
+    return m_Value;
+}
+
+OUString SAL_CALL CLiteral::getLanguage()
+{
+    return m_Language;
+}
+
+css::uno::Reference< css::rdf::XURI > SAL_CALL CLiteral::getDatatype()
+{
+    return m_xDatatype;
+}
+
+} // closing anonymous implementation namespace
+
+extern "C" SAL_DLLPUBLIC_EXPORT css::uno::XInterface*
+unoxml_CLiteral_get_implementation(
+    css::uno::XComponentContext* , css::uno::Sequence<css::uno::Any> const&)
+{
+    return cppu::acquire(new CLiteral());
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/unoxml/source/rdf/CURI.cxx b/unoxml/source/rdf/CURI.cxx
new file mode 100644
index 0000000000..0de8bb97e9
--- /dev/null
+++ b/unoxml/source/rdf/CURI.cxx
@@ -0,0 +1,807 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <cppuhelper/implbase.hxx>
+#include <cppuhelper/supportsservice.hxx>
+#include <com/sun/star/lang/XServiceInfo.hpp>
+#include <com/sun/star/lang/XInitialization.hpp>
+#include <com/sun/star/rdf/XURI.hpp>
+#include <com/sun/star/rdf/URIs.hpp>
+#include <com/sun/star/uno/XComponentContext.hpp>
+
+#include <com/sun/star/lang/IllegalArgumentException.hpp>
+
+
+/// anonymous implementation namespace
+namespace {
+
+class CURI:
+    public ::cppu::WeakImplHelper<
+        css::lang::XServiceInfo,
+        css::lang::XInitialization,
+        css::rdf::XURI>
+{
+public:
+    explicit CURI();
+
+    // css::lang::XServiceInfo:
+    virtual OUString SAL_CALL getImplementationName() override;
+    virtual sal_Bool SAL_CALL supportsService(const OUString & ServiceName) override;
+    virtual css::uno::Sequence< OUString > SAL_CALL getSupportedServiceNames() override;
+
+    // css::lang::XInitialization:
+    virtual void SAL_CALL initialize(const css::uno::Sequence< css::uno::Any > & aArguments) override;
+
+    // css::rdf::XNode:
+    virtual OUString SAL_CALL getStringValue() override;
+
+    // css::rdf::XURI:
+    virtual OUString SAL_CALL getLocalName() override;
+    virtual OUString SAL_CALL getNamespace() override;
+
+private:
+    CURI(CURI const&) = delete;
+    CURI& operator=(CURI const&) = delete;
+
+    /// handle css.rdf.URIs
+    void initFromConstant(const sal_Int16 i_Constant);
+
+    OUString m_Namespace;
+    OUString m_LocalName;
+};
+
+CURI::CURI()
+{}
+
+// com.sun.star.uno.XServiceInfo:
+OUString SAL_CALL CURI::getImplementationName()
+{
+    return "CURI";
+}
+
+sal_Bool SAL_CALL CURI::supportsService(OUString const & serviceName)
+{
+    return cppu::supportsService(this, serviceName);
+}
+
+css::uno::Sequence< OUString > SAL_CALL CURI::getSupportedServiceNames()
+{
+    return { "com.sun.star.rdf.URI" };
+}
+
+const char s_nsXSD      [] = "http://www.w3.org/2001/XMLSchema-datatypes#";
+const char s_nsRDF      [] = "http://www.w3.org/1999/02/22-rdf-syntax-ns#";
+const char s_nsRDFs     [] = "http://www.w3.org/2000/01/rdf-schema#";
+const char s_nsOWL      [] = "http://www.w3.org/2002/07/owl#";
+const char s_nsPkg      [] =
+    "http://docs.oasis-open.org/ns/office/1.2/meta/pkg#";
+const char s_nsODF      [] =
+    "http://docs.oasis-open.org/ns/office/1.2/meta/odf#";
+const char s_nsLO_EXT   [] =
+    "urn:org:documentfoundation:names:experimental:office:xmlns:loext:1.0odf#";
+
+void CURI::initFromConstant(const sal_Int16 i_Constant)
+{
+    const char *ns(nullptr);
+    const char *ln(nullptr);
+    switch (i_Constant)
+    {
+        case css::rdf::URIs::XSD_NCNAME:
+            ns = s_nsXSD;
+            ln = "NCName";
+            break;
+
+        case css::rdf::URIs::XSD_STRING:
+            ns = s_nsXSD;
+            ln = "string";
+            break;
+
+        case css::rdf::URIs::XSD_NORMALIZEDSTRING:
+            ns = s_nsXSD;
+            ln = "normalizedString";
+            break;
+
+        case css::rdf::URIs::XSD_BOOLEAN:
+            ns = s_nsXSD;
+            ln = "boolean";
+            break;
+
+        case css::rdf::URIs::XSD_DECIMAL:
+            ns = s_nsXSD;
+            ln = "decimal";
+            break;
+
+        case css::rdf::URIs::XSD_FLOAT:
+            ns = s_nsXSD;
+            ln = "float";
+            break;
+
+        case css::rdf::URIs::XSD_DOUBLE:
+            ns = s_nsXSD;
+            ln = "double";
+            break;
+
+        case css::rdf::URIs::XSD_INTEGER:
+            ns = s_nsXSD;
+            ln = "integer";
+            break;
+
+        case css::rdf::URIs::XSD_NONNEGATIVEINTEGER:
+            ns = s_nsXSD;
+            ln = "nonNegativeInteger";
+            break;
+
+        case css::rdf::URIs::XSD_POSITIVEINTEGER:
+            ns = s_nsXSD;
+            ln = "positiveInteger";
+            break;
+
+        case css::rdf::URIs::XSD_NONPOSITIVEINTEGER:
+            ns = s_nsXSD;
+            ln = "nonPositiveInteger";
+            break;
+
+        case css::rdf::URIs::XSD_NEGATIVEINTEGER:
+            ns = s_nsXSD;
+            ln = "negativeInteger";
+            break;
+
+        case css::rdf::URIs::XSD_LONG:
+            ns = s_nsXSD;
+            ln = "long";
+            break;
+
+        case css::rdf::URIs::XSD_INT:
+            ns = s_nsXSD;
+            ln = "int";
+            break;
+
+        case css::rdf::URIs::XSD_SHORT:
+            ns = s_nsXSD;
+            ln = "short";
+            break;
+
+        case css::rdf::URIs::XSD_BYTE:
+            ns = s_nsXSD;
+            ln = "byte";
+            break;
+
+        case css::rdf::URIs::XSD_UNSIGNEDLONG:
+            ns = s_nsXSD;
+            ln = "unsignedLong";
+            break;
+
+        case css::rdf::URIs::XSD_UNSIGNEDINT:
+            ns = s_nsXSD;
+            ln = "unsignedInt";
+            break;
+
+        case css::rdf::URIs::XSD_UNSIGNEDSHORT:
+            ns = s_nsXSD;
+            ln = "unsignedShort";
+            break;
+
+        case css::rdf::URIs::XSD_UNSIGNEDBYTE:
+            ns = s_nsXSD;
+            ln = "unsignedByte";
+            break;
+
+        case css::rdf::URIs::XSD_HEXBINARY:
+            ns = s_nsXSD;
+            ln = "hexBinary";
+            break;
+
+        case css::rdf::URIs::XSD_BASE64BINARY:
+            ns = s_nsXSD;
+            ln = "base64Binary";
+            break;
+
+        case css::rdf::URIs::XSD_DATETIME:
+            ns = s_nsXSD;
+            ln = "dateTime";
+            break;
+
+        case css::rdf::URIs::XSD_TIME:
+            ns = s_nsXSD;
+            ln = "time";
+            break;
+
+        case css::rdf::URIs::XSD_DATE:
+            ns = s_nsXSD;
+            ln = "date";
+            break;
+
+        case css::rdf::URIs::XSD_GYEARMONTH:
+            ns = s_nsXSD;
+            ln = "gYearMonth";
+            break;
+
+        case css::rdf::URIs::XSD_GYEAR:
+            ns = s_nsXSD;
+            ln = "gYear";
+            break;
+
+        case css::rdf::URIs::XSD_GMONTHDAY:
+            ns = s_nsXSD;
+            ln = "gMonthDay";
+            break;
+
+        case css::rdf::URIs::XSD_GDAY:
+            ns = s_nsXSD;
+            ln = "gDay";
+            break;
+
+        case css::rdf::URIs::XSD_GMONTH:
+            ns = s_nsXSD;
+            ln = "gMonth";
+            break;
+
+        case css::rdf::URIs::XSD_ANYURI:
+            ns = s_nsXSD;
+            ln = "anyURI";
+            break;
+
+        case css::rdf::URIs::XSD_TOKEN:
+            ns = s_nsXSD;
+            ln = "token";
+            break;
+
+        case css::rdf::URIs::XSD_LANGUAGE:
+            ns = s_nsXSD;
+            ln = "language";
+            break;
+
+        case css::rdf::URIs::XSD_NMTOKEN:
+            ns = s_nsXSD;
+            ln = "NMTOKEN";
+            break;
+
+        case css::rdf::URIs::XSD_NAME:
+            ns = s_nsXSD;
+            ln = "Name";
+            break;
+
+        case css::rdf::URIs::XSD_DURATION:
+            ns = s_nsXSD;
+            ln = "duration";
+            break;
+
+        case css::rdf::URIs::XSD_QNAME:
+            ns = s_nsXSD;
+            ln = "QName";
+            break;
+
+        case css::rdf::URIs::XSD_NOTATION:
+            ns = s_nsXSD;
+            ln = "NOTATION";
+            break;
+
+        case css::rdf::URIs::XSD_NMTOKENS:
+            ns = s_nsXSD;
+            ln = "NMTOKENS";
+            break;
+
+        case css::rdf::URIs::XSD_ID:
+            ns = s_nsXSD;
+            ln = "ID";
+            break;
+
+        case css::rdf::URIs::XSD_IDREF:
+            ns = s_nsXSD;
+            ln = "IDREF";
+            break;
+
+        case css::rdf::URIs::XSD_IDREFS:
+            ns = s_nsXSD;
+            ln = "IDREFS";
+            break;
+
+        case css::rdf::URIs::XSD_ENTITY:
+            ns = s_nsXSD;
+            ln = "ENTITY";
+            break;
+
+        case css::rdf::URIs::XSD_ENTITIES:
+            ns = s_nsXSD;
+            ln = "ENTITIES";
+            break;
+
+        case css::rdf::URIs::RDF_TYPE:
+            ns = s_nsRDF;
+            ln = "type";
+            break;
+
+        case css::rdf::URIs::RDF_SUBJECT:
+            ns = s_nsRDF;
+            ln = "subject";
+            break;
+
+        case css::rdf::URIs::RDF_PREDICATE:
+            ns = s_nsRDF;
+            ln = "predicate";
+            break;
+
+        case css::rdf::URIs::RDF_OBJECT:
+            ns = s_nsRDF;
+            ln = "object";
+            break;
+
+        case css::rdf::URIs::RDF_PROPERTY:
+            ns = s_nsRDF;
+            ln = "Property";
+            break;
+
+        case css::rdf::URIs::RDF_STATEMENT:
+            ns = s_nsRDF;
+            ln = "Statement";
+            break;
+
+        case css::rdf::URIs::RDF_VALUE:
+            ns = s_nsRDF;
+            ln = "value";
+            break;
+
+        case css::rdf::URIs::RDF_FIRST:
+            ns = s_nsRDF;
+            ln = "first";
+            break;
+
+        case css::rdf::URIs::RDF_REST:
+            ns = s_nsRDF;
+            ln = "rest";
+            break;
+
+        case css::rdf::URIs::RDF_NIL:
+            ns = s_nsRDF;
+            ln = "nil";
+            break;
+
+        case css::rdf::URIs::RDF_XMLLITERAL:
+            ns = s_nsRDF;
+            ln = "XMLLiteral";
+            break;
+
+        case css::rdf::URIs::RDF_ALT:
+            ns = s_nsRDF;
+            ln = "Alt";
+            break;
+
+        case css::rdf::URIs::RDF_BAG:
+            ns = s_nsRDF;
+            ln = "Bag";
+            break;
+
+        case css::rdf::URIs::RDF_LIST:
+            ns = s_nsRDF;
+            ln = "List";
+            break;
+
+        case css::rdf::URIs::RDF_SEQ:
+            ns = s_nsRDF;
+            ln = "Seq";
+            break;
+
+        case css::rdf::URIs::RDF_1:
+            ns = s_nsRDF;
+            ln = "_1";
+            break;
+
+        case css::rdf::URIs::RDFS_COMMENT:
+            ns = s_nsRDFs;
+            ln = "comment";
+            break;
+
+        case css::rdf::URIs::RDFS_LABEL:
+            ns = s_nsRDFs;
+            ln = "label";
+            break;
+
+        case css::rdf::URIs::RDFS_DOMAIN:
+            ns = s_nsRDFs;
+            ln = "domain";
+            break;
+
+        case css::rdf::URIs::RDFS_RANGE:
+            ns = s_nsRDFs;
+            ln = "range";
+            break;
+
+        case css::rdf::URIs::RDFS_SUBCLASSOF:
+            ns = s_nsRDFs;
+            ln = "subClassOf";
+            break;
+
+        case css::rdf::URIs::RDFS_LITERAL:
+            ns = s_nsRDFs;
+            ln = "Literal";
+            break;
+
+        case css::rdf::URIs::OWL_CLASS:
+            ns = s_nsOWL;
+            ln = "Class";
+            break;
+
+        case css::rdf::URIs::OWL_OBJECTPROPERTY:
+            ns = s_nsOWL;
+            ln = "ObjectProperty";
+            break;
+
+        case css::rdf::URIs::OWL_DATATYPEPROPERTY:
+            ns = s_nsOWL;
+            ln = "DatatypeProperty";
+            break;
+
+        case css::rdf::URIs::OWL_FUNCTIONALPROPERTY:
+            ns = s_nsOWL;
+            ln = "FunctionalProperty";
+            break;
+
+        case css::rdf::URIs::OWL_THING:
+            ns = s_nsOWL;
+            ln = "Thing";
+            break;
+
+        case css::rdf::URIs::OWL_NOTHING:
+            ns = s_nsOWL;
+            ln = "Nothing";
+            break;
+
+        case css::rdf::URIs::OWL_INDIVIDUAL:
+            ns = s_nsOWL;
+            ln = "Individual";
+            break;
+
+        case css::rdf::URIs::OWL_EQUIVALENTCLASS:
+            ns = s_nsOWL;
+            ln = "equivalentClass";
+            break;
+
+        case css::rdf::URIs::OWL_EQUIVALENTPROPERTY:
+            ns = s_nsOWL;
+            ln = "equivalentProperty";
+            break;
+
+        case css::rdf::URIs::OWL_SAMEAS:
+            ns = s_nsOWL;
+            ln = "sameAs";
+            break;
+
+        case css::rdf::URIs::OWL_DIFFERENTFROM:
+            ns = s_nsOWL;
+            ln = "differentFrom";
+            break;
+
+        case css::rdf::URIs::OWL_ALLDIFFERENT:
+            ns = s_nsOWL;
+            ln = "AllDifferent";
+            break;
+
+        case css::rdf::URIs::OWL_DISTINCTMEMBERS:
+            ns = s_nsOWL;
+            ln = "distinctMembers";
+            break;
+
+        case css::rdf::URIs::OWL_INVERSEOF:
+            ns = s_nsOWL;
+            ln = "inverseOf";
+            break;
+
+        case css::rdf::URIs::OWL_TRANSITIVEPROPERTY:
+            ns = s_nsOWL;
+            ln = "TransitiveProperty";
+            break;
+
+        case css::rdf::URIs::OWL_SYMMETRICPROPERTY:
+            ns = s_nsOWL;
+            ln = "SymmetricProperty";
+            break;
+
+        case css::rdf::URIs::OWL_INVERSEFUNCTIONALPROPERTY:
+            ns = s_nsOWL;
+            ln = "InverseFunctionalProperty";
+            break;
+
+        case css::rdf::URIs::OWL_RESTRICTION:
+            ns = s_nsOWL;
+            ln = "Restriction";
+            break;
+
+        case css::rdf::URIs::OWL_ONPROPERTY:
+            ns = s_nsOWL;
+            ln = "onProperty";
+            break;
+
+        case css::rdf::URIs::OWL_ALLVALUESFROM:
+            ns = s_nsOWL;
+            ln = "allValuesFrom";
+            break;
+
+        case css::rdf::URIs::OWL_SOMEVALUESFROM:
+            ns = s_nsOWL;
+            ln = "someValuesFrom";
+            break;
+
+        case css::rdf::URIs::OWL_MINCARDINALITY:
+            ns = s_nsOWL;
+            ln = "minCardinality";
+            break;
+
+        case css::rdf::URIs::OWL_MAXCARDINALITY:
+            ns = s_nsOWL;
+            ln = "maxCardinality";
+            break;
+
+        case css::rdf::URIs::OWL_CARDINALITY:
+            ns = s_nsOWL;
+            ln = "cardinality";
+            break;
+
+        case css::rdf::URIs::OWL_ONTOLOGY:
+            ns = s_nsOWL;
+            ln = "Ontology";
+            break;
+
+        case css::rdf::URIs::OWL_IMPORTS:
+            ns = s_nsOWL;
+            ln = "imports";
+            break;
+
+        case css::rdf::URIs::OWL_VERSIONINFO:
+            ns = s_nsOWL;
+            ln = "versionInfo";
+            break;
+
+        case css::rdf::URIs::OWL_PRIORVERSION:
+            ns = s_nsOWL;
+            ln = "priorVersion";
+            break;
+
+        case css::rdf::URIs::OWL_BACKWARDCOMPATIBLEWITH:
+            ns = s_nsOWL;
+            ln = "backwardCompatibleWith";
+            break;
+
+        case css::rdf::URIs::OWL_INCOMPATIBLEWITH:
+            ns = s_nsOWL;
+            ln = "incompatibleWith";
+            break;
+
+        case css::rdf::URIs::OWL_DEPRECATEDCLASS:
+            ns = s_nsOWL;
+            ln = "DeprecatedClass";
+            break;
+
+        case css::rdf::URIs::OWL_DEPRECATEDPROPERTY:
+            ns = s_nsOWL;
+            ln = "DeprecatedProperty";
+            break;
+
+        case css::rdf::URIs::OWL_ANNOTATIONPROPERTY:
+            ns = s_nsOWL;
+            ln = "AnnotationProperty";
+            break;
+
+        case css::rdf::URIs::OWL_ONTOLOGYPROPERTY:
+            ns = s_nsOWL;
+            ln = "OntologyProperty";
+            break;
+
+        case css::rdf::URIs::OWL_ONEOF:
+            ns = s_nsOWL;
+            ln = "oneOf";
+            break;
+
+        case css::rdf::URIs::OWL_DATARANGE:
+            ns = s_nsOWL;
+            ln = "dataRange";
+            break;
+
+        case css::rdf::URIs::OWL_DISJOINTWITH:
+            ns = s_nsOWL;
+            ln = "disjointWith";
+            break;
+
+        case css::rdf::URIs::OWL_UNIONOF:
+            ns = s_nsOWL;
+            ln = "unionOf";
+            break;
+
+        case css::rdf::URIs::OWL_COMPLEMENTOF:
+            ns = s_nsOWL;
+            ln = "complementOf";
+            break;
+
+        case css::rdf::URIs::OWL_INTERSECTIONOF:
+            ns = s_nsOWL;
+            ln = "intersectionOf";
+            break;
+
+        case css::rdf::URIs::OWL_HASVALUE:
+            ns = s_nsOWL;
+            ln = "hasValue";
+            break;
+
+
+        case css::rdf::URIs::PKG_HASPART:
+            ns = s_nsPkg;
+            ln = "hasPart";
+            break;
+
+        case css::rdf::URIs::PKG_MIMETYPE:
+            ns = s_nsPkg;
+            ln = "mimeType";
+            break;
+
+        case css::rdf::URIs::PKG_PACKAGE:
+            ns = s_nsPkg;
+            ln = "Package";
+            break;
+
+        case css::rdf::URIs::PKG_ELEMENT:
+            ns = s_nsPkg;
+            ln = "Element";
+            break;
+
+        case css::rdf::URIs::PKG_FILE:
+            ns = s_nsPkg;
+            ln = "File";
+            break;
+
+        case css::rdf::URIs::PKG_METADATAFILE:
+            ns = s_nsPkg;
+            ln = "MetadataFile";
+            break;
+
+        case css::rdf::URIs::PKG_DOCUMENT:
+            ns = s_nsPkg;
+            ln = "Document";
+            break;
+
+        case css::rdf::URIs::ODF_PREFIX:
+            ns = s_nsODF;
+            ln = "prefix";
+            break;
+
+        case css::rdf::URIs::ODF_SUFFIX:
+            ns = s_nsODF;
+            ln = "suffix";
+            break;
+
+        case css::rdf::URIs::ODF_ELEMENT:
+            ns = s_nsODF;
+            ln = "Element";
+            break;
+
+        case css::rdf::URIs::ODF_CONTENTFILE:
+            ns = s_nsODF;
+            ln = "ContentFile";
+            break;
+
+        case css::rdf::URIs::ODF_STYLESFILE:
+            ns = s_nsODF;
+            ln = "StylesFile";
+            break;
+
+        case css::rdf::URIs::LO_EXT_SHADING:
+            ns = s_nsLO_EXT;
+            ln = "shading";
+            break;
+
+        default:
+            throw css::lang::IllegalArgumentException(
+                "CURI::initialize: invalid URIs constant argument", *this, 0);
+    }
+    m_Namespace = OUString::createFromAscii(ns);
+    m_LocalName = OUString::createFromAscii(ln);
+}
+
+// css::lang::XInitialization:
+void SAL_CALL CURI::initialize(const css::uno::Sequence< css::uno::Any > & aArguments)
+{
+    sal_Int32 len = aArguments.getLength();
+    if ((len < 1) || (len > 2)) {
+        throw css::lang::IllegalArgumentException(
+            "CURI::initialize: must give 1 or 2 argument(s)", *this, 2);
+    }
+
+    sal_Int16 arg(0);
+    OUString arg0;
+    OUString arg1;
+    if (aArguments[0] >>= arg) {
+        // integer argument: constant from rdf::URIs
+        if (len != 1) {
+            throw css::lang::IllegalArgumentException(
+                "CURI::initialize: must give 1 int argument", *this, 1);
+        }
+        initFromConstant(arg);
+        return;
+    }
+    if (!(aArguments[0] >>= arg0)) {
+        throw css::lang::IllegalArgumentException(
+            "CURI::initialize: argument must be string or short", *this, 0);
+    }
+    if (len > 1) {
+        if (!(aArguments[1] >>= arg1)) {
+            throw css::lang::IllegalArgumentException(
+                "CURI::initialize: argument must be string", *this, 1);
+        }
+        // just append the parameters and then split them again; seems simplest
+        arg0 = arg0 + arg1;
+        arg1.clear();
+    }
+
+    // split parameter
+    sal_Int32 idx = arg0.indexOf('#');
+    if (idx < 0)
+        idx = arg0.lastIndexOf('/');
+    if (idx < 0)
+        idx = arg0.lastIndexOf(':');
+    if (idx < 0)
+    {
+        throw css::lang::IllegalArgumentException(
+            "CURI::initialize: argument not splittable: no separator [#/:]", *this, 0);
+    }
+    if (idx < arg0.getLength() - 1) {
+        arg1 = arg0.copy(idx+1);
+        arg0 = arg0.copy(0, idx+1);
+    }
+
+    //FIXME: what is legal?
+    if (arg0.isEmpty()) {
+        throw css::lang::IllegalArgumentException(
+            "CURI::initialize: argument is not valid namespace", *this, 0);
+    }
+    m_Namespace = arg0;
+
+    //FIXME: what is legal?
+    if ((false)) {
+        throw css::lang::IllegalArgumentException(
+            "CURI::initialize: argument is not valid local name", *this, 1);
+    }
+    m_LocalName = arg1;
+}
+
+// css::rdf::XNode:
+OUString SAL_CALL CURI::getStringValue()
+{
+    return m_Namespace + m_LocalName;
+}
+
+// css::rdf::XURI:
+OUString SAL_CALL CURI::getNamespace()
+{
+    return m_Namespace;
+}
+
+OUString SAL_CALL CURI::getLocalName()
+{
+    return m_LocalName;
+}
+
+} // closing anonymous implementation namespace
+
+
+extern "C" SAL_DLLPUBLIC_EXPORT css::uno::XInterface*
+unoxml_CURI_get_implementation(
+    css::uno::XComponentContext* , css::uno::Sequence<css::uno::Any> const&)
+{
+    return cppu::acquire(new CURI());
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/unoxml/source/rdf/librdf_repository.cxx b/unoxml/source/rdf/librdf_repository.cxx
new file mode 100644
index 0000000000..ccf4d87ffe
--- /dev/null
+++ b/unoxml/source/rdf/librdf_repository.cxx
@@ -0,0 +1,2466 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <string.h>
+
+#include <map>
+#include <memory>
+#include <mutex>
+#include <set>
+#include <string_view>
+#include <iterator>
+#include <algorithm>
+#include <atomic>
+
+#include <optional>
+
+#include <libxslt/security.h>
+
+#include <redland.h>
+
+#include <com/sun/star/container/ElementExistException.hpp>
+#include <com/sun/star/datatransfer/UnsupportedFlavorException.hpp>
+#include <com/sun/star/lang/XServiceInfo.hpp>
+#include <com/sun/star/lang/XInitialization.hpp>
+#include <com/sun/star/lang/WrappedTargetRuntimeException.hpp>
+#include <com/sun/star/lang/IllegalArgumentException.hpp>
+#include <com/sun/star/io/XSeekable.hpp>
+#include <com/sun/star/text/XTextRange.hpp>
+#include <com/sun/star/rdf/ParseException.hpp>
+#include <com/sun/star/rdf/QueryException.hpp>
+#include <com/sun/star/rdf/RepositoryException.hpp>
+#include <com/sun/star/rdf/XDocumentRepository.hpp>
+#include <com/sun/star/rdf/XLiteral.hpp>
+#include <com/sun/star/rdf/FileFormat.hpp>
+#include <com/sun/star/rdf/BlankNode.hpp>
+#include <com/sun/star/rdf/URI.hpp>
+#include <com/sun/star/rdf/Literal.hpp>
+
+#include <rtl/ref.hxx>
+#include <rtl/ustrbuf.hxx>
+#include <rtl/ustring.hxx>
+#include <osl/diagnose.h>
+#include <cppuhelper/exc_hlp.hxx>
+#include <cppuhelper/implbase.hxx>
+#include <cppuhelper/supportsservice.hxx>
+#include <cppuhelper/weakref.hxx>
+
+#include <comphelper/sequence.hxx>
+#include <comphelper/xmltools.hxx>
+
+#include <com/sun/star/embed/XEncryptionProtectedSource2.hpp>
+#include <utility>
+
+/**
+    Implementation of the service com.sun.star.rdf.Repository.
+
+    This implementation uses the Redland RDF library (librdf).
+
+    There are several classes involved:
+    librdf_TypeConverter:   helper class to convert data types redland <-> uno
+    librdf_Repository:      the main repository, does almost all the work
+    librdf_NamedGraph:      the XNamedGraph, forwards everything to repository
+    librdf_GraphResult:     an XEnumeration<Statement>
+    librdf_QuerySelectResult:   an XEnumeration<sequence<XNode>>
+
+ */
+
+/// anonymous implementation namespace
+namespace {
+
+class librdf_NamedGraph;
+class librdf_Repository;
+
+using namespace ::com::sun::star;
+
+typedef std::map< OUString, ::rtl::Reference<librdf_NamedGraph> >
+    NamedGraphMap_t;
+
+const char s_sparql [] = "sparql";
+const char s_nsOOo  [] = "http://openoffice.org/2004/office/rdfa/";
+
+
+//FIXME: this approach is not ideal. can we use blank nodes instead?
+bool isInternalContext(librdf_node *i_pNode) noexcept
+{
+    OSL_ENSURE(i_pNode, "isInternalContext: context null");
+    OSL_ENSURE(librdf_node_is_resource(i_pNode),
+        "isInternalContext: context not resource");
+    if (i_pNode) {
+        librdf_uri *pURI(librdf_node_get_uri(i_pNode));
+        OSL_ENSURE(pURI, "isInternalContext: URI null");
+        if (pURI) {
+            unsigned char *pContextURI(librdf_uri_as_string(pURI));
+            assert(pContextURI && "isInternalContext: URI string null");
+            // if prefix matches reserved uri, it is RDFa context
+            if (!strncmp(reinterpret_cast<char *>(pContextURI),
+                    s_nsOOo, sizeof(s_nsOOo)-1)) {
+                return true;
+            }
+        }
+        return false;
+    }
+    return true;
+}
+
+
+// n.b.: librdf destructor functions dereference null pointers!
+//       so they need to be wrapped to be usable with std::shared_ptr.
+void safe_librdf_free_world(librdf_world *const world)
+{
+    if (world) { librdf_free_world(world); }
+}
+void safe_librdf_free_model(librdf_model *const model)
+{
+    if (model) { librdf_free_model(model); }
+}
+void safe_librdf_free_node(librdf_node* node)
+{
+    if (node) { librdf_free_node(node); }
+}
+void safe_librdf_free_parser(librdf_parser *const parser)
+{
+    if (parser) { librdf_free_parser(parser); }
+}
+void safe_librdf_free_query(librdf_query *const query)
+{
+    if (query) { librdf_free_query(query); }
+}
+void
+safe_librdf_free_query_results(librdf_query_results *const query_results)
+{
+    if (query_results) { librdf_free_query_results(query_results); }
+}
+void safe_librdf_free_serializer(librdf_serializer *const serializer)
+{
+    if (serializer) { librdf_free_serializer(serializer); }
+}
+void safe_librdf_free_statement(librdf_statement *const statement)
+{
+    if (statement) { librdf_free_statement(statement); }
+}
+void safe_librdf_free_storage(librdf_storage *const storage)
+{
+    if (storage) { librdf_free_storage(storage); }
+}
+void safe_librdf_free_stream(librdf_stream *const stream)
+{
+    if (stream) { librdf_free_stream(stream); }
+}
+void safe_librdf_free_uri(librdf_uri *const uri)
+{
+    if (uri) { librdf_free_uri(uri); }
+}
+
+
+/** converts between librdf types and UNO API types.
+ */
+class librdf_TypeConverter
+{
+public:
+
+    // some wrapper classes to temporarily hold values of UNO XNodes
+    struct Node
+    {
+        virtual ~Node() {}
+    };
+    struct Resource : public Node { };
+    struct URI : public Resource
+    {
+        OString const value;
+        explicit URI(OString i_Value)
+            : value(std::move(i_Value))
+        { }
+    };
+    struct BlankNode : public Resource
+    {
+        OString const value;
+        explicit BlankNode(OString i_Value)
+            : value(std::move(i_Value))
+        { }
+    };
+    struct Literal : public Node
+    {
+        OString const value;
+        OString const language;
+        ::std::optional<OString> const type;
+        Literal(OString  i_rValue, OString i_Language,
+                ::std::optional<OString> i_Type)
+            : value(std::move(i_rValue))
+            , language(std::move(i_Language))
+            , type(std::move(i_Type))
+        { }
+    };
+    struct Statement
+    {
+        std::shared_ptr<Resource> const pSubject;
+        std::shared_ptr<URI> const pPredicate;
+        std::shared_ptr<Node> const pObject;
+        Statement(std::shared_ptr<Resource> i_pSubject,
+                  std::shared_ptr<URI> i_pPredicate,
+                  std::shared_ptr<Node> i_pObject)
+            : pSubject(std::move(i_pSubject))
+            , pPredicate(std::move(i_pPredicate))
+            , pObject(std::move(i_pObject))
+        { }
+    };
+
+    librdf_TypeConverter(
+            uno::Reference< uno::XComponentContext > i_xContext,
+            librdf_Repository &i_rRep)
+        : m_xContext(std::move(i_xContext))
+        , m_rRep(i_rRep)
+    { };
+
+    librdf_world *createWorld_Lock() const;
+    librdf_storage *createStorage_Lock(librdf_world *i_pWorld) const;
+    librdf_model *createModel_Lock(librdf_world *i_pWorld,
+        librdf_storage * i_pStorage) const;
+    static librdf_uri* mkURI_Lock(librdf_world* i_pWorld,
+        const OString & i_rURI);
+    static librdf_node* mkResource_Lock(librdf_world* i_pWorld,
+        const Resource * i_pResource);
+    static librdf_node* mkNode_Lock(librdf_world* i_pWorld,
+        const Node * i_pNode);
+    static librdf_statement* mkStatement_Lock(librdf_world* i_pWorld,
+        Statement const& i_rStatement);
+    static std::shared_ptr<Resource> extractResource_NoLock(
+        const uno::Reference< rdf::XResource > & i_xResource);
+    static void extractResourceToCacheKey_NoLock(
+        const uno::Reference< rdf::XResource > & i_xResource,
+        OUStringBuffer& rBuf);
+    static std::shared_ptr<Node> extractNode_NoLock(
+        const uno::Reference< rdf::XNode > & i_xNode);
+    static void extractNodeToCacheKey_NoLock(
+        const uno::Reference< rdf::XNode > & i_xNode,
+        OUStringBuffer& rBuffer);
+    static Statement extractStatement_NoLock(
+        const uno::Reference< rdf::XResource > & i_xSubject,
+        const uno::Reference< rdf::XURI > & i_xPredicate,
+        const uno::Reference< rdf::XNode > & i_xObject);
+    uno::Reference<rdf::XURI> convertToXURI(librdf_uri* i_pURI) const;
+    uno::Reference<rdf::XURI> convertToXURI(librdf_node* i_pURI) const;
+    uno::Reference<rdf::XResource>
+        convertToXResource(librdf_node* i_pNode) const;
+    uno::Reference<rdf::XNode> convertToXNode(librdf_node* i_pNode) const;
+    rdf::Statement
+        convertToStatement(librdf_statement* i_pStmt, librdf_node* i_pContext)
+        const;
+
+private:
+    uno::Reference< uno::XComponentContext > const m_xContext;
+    librdf_Repository & m_rRep;
+};
+
+
+/** implements the repository service.
+ */
+class librdf_Repository:
+//    private ::cppu::BaseMutex,
+    public ::cppu::WeakImplHelper<
+        lang::XServiceInfo,
+        rdf::XDocumentRepository,
+        lang::XInitialization>
+{
+public:
+
+    explicit librdf_Repository(
+        uno::Reference< uno::XComponentContext > const & i_xContext);
+    virtual ~librdf_Repository() override;
+
+    // css::lang::XServiceInfo:
+    virtual OUString SAL_CALL getImplementationName() override;
+    virtual sal_Bool SAL_CALL supportsService(
+            const OUString & ServiceName) override;
+    virtual uno::Sequence< OUString > SAL_CALL
+        getSupportedServiceNames() override;
+
+    // css::rdf::XRepository:
+    virtual uno::Reference< rdf::XBlankNode > SAL_CALL createBlankNode() override;
+    virtual uno::Reference<rdf::XNamedGraph> SAL_CALL importGraph(
+            ::sal_Int16 i_Format,
+            const uno::Reference< io::XInputStream > & i_xInStream,
+            const uno::Reference< rdf::XURI > & i_xGraphName,
+            const uno::Reference< rdf::XURI > & i_xBaseURI) override;
+    virtual void SAL_CALL exportGraph(::sal_Int16 i_Format,
+            const uno::Reference< io::XOutputStream > & i_xOutStream,
+            const uno::Reference< rdf::XURI > & i_xGraphName,
+            const uno::Reference< rdf::XURI > & i_xBaseURI) override;
+    virtual uno::Sequence< uno::Reference< rdf::XURI > > SAL_CALL
+        getGraphNames() override;
+    virtual uno::Reference< rdf::XNamedGraph > SAL_CALL getGraph(
+            const uno::Reference< rdf::XURI > & i_xGraphName) override;
+    virtual uno::Reference< rdf::XNamedGraph > SAL_CALL createGraph(
+            const uno::Reference< rdf::XURI > & i_xGraphName) override;
+    virtual void SAL_CALL destroyGraph(
+            const uno::Reference< rdf::XURI > & i_xGraphName) override;
+    virtual uno::Reference< container::XEnumeration > SAL_CALL getStatements(
+            const uno::Reference< rdf::XResource > & i_xSubject,
+            const uno::Reference< rdf::XURI > & i_xPredicate,
+            const uno::Reference< rdf::XNode > & i_xObject) override;
+    virtual uno::Reference< rdf::XQuerySelectResult > SAL_CALL
+            querySelect(const OUString & i_rQuery) override;
+    virtual uno::Reference< container::XEnumeration > SAL_CALL
+        queryConstruct(const OUString & i_rQuery) override;
+    virtual sal_Bool SAL_CALL queryAsk(const OUString & i_rQuery) override;
+
+    // css::rdf::XDocumentRepository:
+    virtual void SAL_CALL setStatementRDFa(
+            const uno::Reference< rdf::XResource > & i_xSubject,
+            const uno::Sequence< uno::Reference< rdf::XURI > > & i_rPredicates,
+            const uno::Reference< rdf::XMetadatable > & i_xObject,
+            const OUString & i_rRDFaContent,
+            const uno::Reference< rdf::XURI > & i_xRDFaDatatype) override;
+    virtual void SAL_CALL removeStatementRDFa(
+            const uno::Reference< rdf::XMetadatable > & i_xElement) override;
+    virtual beans::Pair< uno::Sequence<rdf::Statement>, sal_Bool > SAL_CALL
+        getStatementRDFa(uno::Reference< rdf::XMetadatable > const& i_xElement) override;
+    virtual uno::Reference< container::XEnumeration > SAL_CALL
+        getStatementsRDFa(
+            const uno::Reference< rdf::XResource > & i_xSubject,
+            const uno::Reference< rdf::XURI > & i_xPredicate,
+            const uno::Reference< rdf::XNode > & i_xObject) override;
+
+    // css::lang::XInitialization:
+    virtual void SAL_CALL initialize(
+            const uno::Sequence< css::uno::Any > & i_rArguments) override;
+
+    // XNamedGraph forwards ---------------------------------------------
+    NamedGraphMap_t::iterator clearGraph_NoLock(
+            const OUString & i_rGraphName,
+            bool i_Internal = false );
+    NamedGraphMap_t::iterator clearGraph_Lock(
+            const OUString & i_rGraphName,
+            bool i_Internal);
+    void addStatementGraph_NoLock(
+            const uno::Reference< rdf::XResource > & i_xSubject,
+            const uno::Reference< rdf::XURI > & i_xPredicate,
+            const uno::Reference< rdf::XNode > & i_xObject,
+            const uno::Reference< rdf::XURI > & i_xName );
+//        throw (uno::RuntimeException, lang::IllegalArgumentException,
+//            container::NoSuchElementException, rdf::RepositoryException);
+    void addStatementGraph_Lock(
+        librdf_TypeConverter::Statement const& i_rStatement,
+        OUString const& i_rGraphName,
+        bool i_Internal);
+    void removeStatementsGraph_NoLock(
+            const uno::Reference< rdf::XResource > & i_xSubject,
+            const uno::Reference< rdf::XURI > & i_xPredicate,
+            const uno::Reference< rdf::XNode > & i_xObject,
+            const uno::Reference< rdf::XURI > & i_xName );
+//        throw (uno::RuntimeException, lang::IllegalArgumentException,
+//            container::NoSuchElementException, rdf::RepositoryException);
+    std::vector<rdf::Statement> getStatementsGraph_NoLock(
+            const uno::Reference< rdf::XResource > & i_xSubject,
+            const uno::Reference< rdf::XURI > & i_xPredicate,
+            const uno::Reference< rdf::XNode > & i_xObject,
+            const uno::Reference< rdf::XURI > & i_xName,
+            bool i_Internal = false );
+//        throw (uno::RuntimeException, lang::IllegalArgumentException,
+//            container::NoSuchElementException, rdf::RepositoryException);
+
+    const librdf_TypeConverter& getTypeConverter() const { return m_TypeConverter; };
+
+private:
+
+    librdf_Repository(librdf_Repository const&) = delete;
+    librdf_Repository& operator=(librdf_Repository const&) = delete;
+
+    /// this is const, no need to lock m_aMutex to access it
+    uno::Reference< uno::XComponentContext > const m_xContext;
+
+    /// librdf global data
+    /** N.B.: The redland documentation gives the impression that you can have
+              as many librdf_worlds as you like. This is true in the same sense
+              that you can physically be in as many places as you like.
+              Well, you can, just not at the same time.
+              The ugly truth is that destroying a librdf_world kills a bunch
+              of static variables; other librdf_worlds become very unhappy
+              when they access these.
+              And of course this is not documented anywhere that I could find.
+              So we allocate a single world, and refcount that.
+     */
+    static std::shared_ptr<librdf_world> m_pWorld;
+    /// refcount
+    static sal_uInt32 m_NumInstances;
+    /// mutex for m_pWorld - redland is not as threadsafe as is often claimed
+    static std::mutex m_aMutex;
+
+    // NB: sequence of the shared pointers is important!
+    /// librdf repository storage
+    std::shared_ptr<librdf_storage> m_pStorage;
+    /// librdf repository model
+    std::shared_ptr<librdf_model> m_pModel;
+
+    /// all named graphs
+    NamedGraphMap_t m_NamedGraphs;
+
+    /// type conversion helper - stateless
+    librdf_TypeConverter m_TypeConverter;
+
+    /// set of xml:ids of elements with xhtml:content
+    ::std::set< OUString > m_RDFaXHTMLContentSet;
+};
+
+
+/** result of operations that return a graph, i.e.,
+    an XEnumeration of statements.
+ */
+class librdf_GraphResult:
+    public ::cppu::WeakImplHelper<
+        container::XEnumeration>
+{
+public:
+
+    librdf_GraphResult(librdf_Repository *i_pRepository,
+            std::mutex & i_rMutex,
+            std::shared_ptr<librdf_stream> i_pStream,
+            std::shared_ptr<librdf_node> i_pContext,
+            std::shared_ptr<librdf_query> i_pQuery =
+                std::shared_ptr<librdf_query>() )
+        : m_xRep(i_pRepository)
+        , m_rMutex(i_rMutex)
+        , m_pQuery(std::move(i_pQuery))
+        , m_pContext(std::move(i_pContext))
+        , m_pStream(std::move(i_pStream))
+    { };
+
+    virtual ~librdf_GraphResult() override
+    {
+        std::scoped_lock g(m_rMutex); // lock mutex when destroying members
+        const_cast<std::shared_ptr<librdf_stream>& >(m_pStream).reset();
+        const_cast<std::shared_ptr<librdf_node>& >(m_pContext).reset();
+        const_cast<std::shared_ptr<librdf_query>& >(m_pQuery).reset();
+    }
+
+    // css::container::XEnumeration:
+    virtual sal_Bool SAL_CALL hasMoreElements() override;
+    virtual uno::Any SAL_CALL nextElement() override;
+
+private:
+
+    librdf_GraphResult(librdf_GraphResult const&) = delete;
+    librdf_GraphResult& operator=(librdf_GraphResult const&) = delete;
+
+    // NB: this is not a weak pointer: streams _must_ be deleted before the
+    //     storage they point into, so we keep the repository alive here
+    // also, sequence is important: the stream must be destroyed first.
+    ::rtl::Reference< librdf_Repository > m_xRep;
+    // needed for synchronizing access to librdf (it doesn't do win32 threading)
+    std::mutex & m_rMutex;
+    // the query (in case this is a result of a graph query)
+    // not that the redland documentation spells this out explicitly, but
+    // queries must be freed only after all the results are completely read
+    std::shared_ptr<librdf_query>  const m_pQuery;
+    std::shared_ptr<librdf_node>   const m_pContext;
+    std::shared_ptr<librdf_stream> const m_pStream;
+
+    librdf_node* getContext_Lock() const;
+};
+
+
+// css::container::XEnumeration:
+sal_Bool SAL_CALL
+librdf_GraphResult::hasMoreElements()
+{
+    std::scoped_lock g(m_rMutex);
+    return m_pStream && !librdf_stream_end(m_pStream.get());
+}
+
+librdf_node* librdf_GraphResult::getContext_Lock() const
+{
+    if (!m_pStream || librdf_stream_end(m_pStream.get()))
+        return nullptr;
+    librdf_node *pCtxt(
+#if LIBRDF_VERSION >= 10012
+        librdf_stream_get_context2(m_pStream.get()) );
+#else
+        static_cast<librdf_node *>(librdf_stream_get_context(m_pStream.get())) );
+#endif
+    if (pCtxt)
+        return pCtxt;
+    return m_pContext.get();
+}
+
+css::uno::Any SAL_CALL
+librdf_GraphResult::nextElement()
+{
+    std::scoped_lock g(m_rMutex);
+    if (m_pStream && librdf_stream_end(m_pStream.get())) {
+        throw container::NoSuchElementException();
+    }
+    librdf_node * pCtxt = getContext_Lock();
+
+    librdf_statement *pStmt( librdf_stream_get_object(m_pStream.get()) );
+    if (!pStmt) {
+        rdf::QueryException e(
+            "librdf_GraphResult::nextElement: "
+            "librdf_stream_get_object failed", *this);
+        throw lang::WrappedTargetException(
+            "librdf_GraphResult::nextElement: "
+            "librdf_stream_get_object failed", *this,
+                uno::Any(e));
+    }
+    // NB: pCtxt may be null here if this is result of a graph query
+    if (pCtxt && isInternalContext(pCtxt)) {
+        pCtxt = nullptr; // XML ID context is implementation detail!
+    }
+    rdf::Statement Stmt(
+        m_xRep->getTypeConverter().convertToStatement(pStmt, pCtxt) );
+    // NB: this will invalidate current item.
+    librdf_stream_next(m_pStream.get());
+    return uno::Any(Stmt);
+}
+
+
+/** result of operations that return a graph, i.e.,
+    an XEnumeration of statements.
+ */
+class librdf_GraphResult2:
+    public ::cppu::WeakImplHelper<
+        container::XEnumeration>
+{
+public:
+
+    librdf_GraphResult2(std::vector<rdf::Statement> statements)
+        : m_vStatements(std::move(statements))
+    { };
+
+    // css::container::XEnumeration:
+    virtual sal_Bool SAL_CALL hasMoreElements() override;
+    virtual uno::Any SAL_CALL nextElement() override;
+
+private:
+
+    std::vector<rdf::Statement> m_vStatements;
+    std::atomic<std::size_t> m_nIndex = 0;
+};
+
+
+// css::container::XEnumeration:
+sal_Bool SAL_CALL
+librdf_GraphResult2::hasMoreElements()
+{
+    return m_nIndex < m_vStatements.size();
+}
+
+css::uno::Any SAL_CALL
+librdf_GraphResult2::nextElement()
+{
+    std::size_t const n = m_nIndex++;
+    if (m_vStatements.size() <= n)
+    {
+        m_nIndex = m_vStatements.size(); // avoid overflow
+        throw container::NoSuchElementException();
+    }
+    return uno::Any(m_vStatements[n]);
+}
+
+/** result of tuple queries ("SELECT").
+ */
+class librdf_QuerySelectResult:
+    public ::cppu::WeakImplHelper<
+        rdf::XQuerySelectResult>
+{
+public:
+
+    librdf_QuerySelectResult(librdf_Repository *i_pRepository,
+            std::mutex & i_rMutex,
+            std::shared_ptr<librdf_query> i_pQuery,
+            std::shared_ptr<librdf_query_results> i_pQueryResult,
+            uno::Sequence< OUString > const& i_rBindingNames )
+        : m_xRep(i_pRepository)
+        , m_rMutex(i_rMutex)
+        , m_pQuery(std::move(i_pQuery))
+        , m_pQueryResult(std::move(i_pQueryResult))
+        , m_BindingNames(i_rBindingNames)
+    { };
+
+    virtual ~librdf_QuerySelectResult() override
+    {
+        std::scoped_lock g(m_rMutex); // lock mutex when destroying members
+        const_cast<std::shared_ptr<librdf_query_results>& >(m_pQueryResult)
+            .reset();
+        const_cast<std::shared_ptr<librdf_query>& >(m_pQuery).reset();
+    }
+
+    // css::container::XEnumeration:
+    virtual sal_Bool SAL_CALL hasMoreElements() override;
+    virtual uno::Any SAL_CALL nextElement() override;
+
+    // css::rdf::XQuerySelectResult:
+    virtual uno::Sequence< OUString > SAL_CALL getBindingNames() override;
+
+private:
+
+    librdf_QuerySelectResult(librdf_QuerySelectResult const&) = delete;
+    librdf_QuerySelectResult& operator=(librdf_QuerySelectResult const&) = delete;
+
+    // NB: this is not a weak pointer: streams _must_ be deleted before the
+    //     storage they point into, so we keep the repository alive here
+    // also, sequence is important: the stream must be destroyed first.
+    ::rtl::Reference< librdf_Repository > m_xRep;
+    // needed for synchronizing access to librdf (it doesn't do win32 threading)
+    std::mutex & m_rMutex;
+    // not that the redland documentation spells this out explicitly, but
+    // queries must be freed only after all the results are completely read
+    std::shared_ptr<librdf_query> const m_pQuery;
+    std::shared_ptr<librdf_query_results> const m_pQueryResult;
+    uno::Sequence< OUString > const m_BindingNames;
+};
+
+
+// css::container::XEnumeration:
+sal_Bool SAL_CALL
+librdf_QuerySelectResult::hasMoreElements()
+{
+    std::scoped_lock g(m_rMutex);
+    return !librdf_query_results_finished(m_pQueryResult.get());
+}
+
+class NodeArray : private std::vector<librdf_node*>
+{
+public:
+    NodeArray(int cnt) : std::vector<librdf_node*>(cnt) {}
+
+    ~NodeArray() noexcept
+    {
+        std::for_each(begin(), end(), safe_librdf_free_node);
+    }
+
+    using std::vector<librdf_node*>::data;
+    using std::vector<librdf_node*>::operator[];
+};
+
+css::uno::Any SAL_CALL
+librdf_QuerySelectResult::nextElement()
+{
+    std::scoped_lock g(m_rMutex);
+    if (librdf_query_results_finished(m_pQueryResult.get())) {
+        throw container::NoSuchElementException();
+    }
+    sal_Int32 count(m_BindingNames.getLength());
+    OSL_ENSURE(count >= 0, "negative length?");
+    NodeArray aNodes(count);
+    if (librdf_query_results_get_bindings(m_pQueryResult.get(), nullptr,
+                aNodes.data()))
+    {
+        rdf::QueryException e(
+            "librdf_QuerySelectResult::nextElement: "
+            "librdf_query_results_get_bindings failed", *this);
+        throw lang::WrappedTargetException(
+            "librdf_QuerySelectResult::nextElement: "
+            "librdf_query_results_get_bindings failed", *this,
+            uno::Any(e));
+    }
+    uno::Sequence< uno::Reference< rdf::XNode > > ret(count);
+    auto retRange = asNonConstRange(ret);
+    for (int i = 0; i < count; ++i) {
+        retRange[i] = m_xRep->getTypeConverter().convertToXNode(aNodes[i]);
+    }
+    // NB: this will invalidate current item.
+    librdf_query_results_next(m_pQueryResult.get());
+    return uno::Any(ret);
+}
+
+// css::rdf::XQuerySelectResult:
+uno::Sequence< OUString > SAL_CALL
+librdf_QuerySelectResult::getBindingNames()
+{
+    // const - no lock needed
+    return m_BindingNames;
+}
+
+
+/** represents a named graph, and forwards all the work to repository.
+ */
+class librdf_NamedGraph:
+    public ::cppu::WeakImplHelper<
+        rdf::XNamedGraph>
+{
+public:
+    librdf_NamedGraph(librdf_Repository * i_pRep,
+            uno::Reference<rdf::XURI> i_xName)
+        : m_wRep(i_pRep)
+        , m_pRep(i_pRep)
+        , m_xName(std::move(i_xName))
+    { };
+
+    // css::rdf::XNode:
+    virtual OUString SAL_CALL getStringValue() override;
+
+    // css::rdf::XURI:
+    virtual OUString SAL_CALL getNamespace() override;
+    virtual OUString SAL_CALL getLocalName() override;
+
+    // css::rdf::XNamedGraph:
+    virtual uno::Reference<rdf::XURI> SAL_CALL getName() override;
+    virtual void SAL_CALL clear() override;
+    virtual void SAL_CALL addStatement(
+            const uno::Reference< rdf::XResource > & i_xSubject,
+            const uno::Reference< rdf::XURI > & i_xPredicate,
+            const uno::Reference< rdf::XNode > & i_xObject) override;
+    virtual void SAL_CALL removeStatements(
+            const uno::Reference< rdf::XResource > & i_xSubject,
+            const uno::Reference< rdf::XURI > & i_xPredicate,
+            const uno::Reference< rdf::XNode > & i_xObject) override;
+    virtual uno::Reference< container::XEnumeration > SAL_CALL getStatements(
+            const uno::Reference< rdf::XResource > & i_xSubject,
+            const uno::Reference< rdf::XURI > & i_xPredicate,
+            const uno::Reference< rdf::XNode > & i_xObject) override;
+
+private:
+
+    librdf_NamedGraph(librdf_NamedGraph const&) = delete;
+    librdf_NamedGraph& operator=(librdf_NamedGraph const&) = delete;
+
+    static OUString createCacheKey_NoLock(
+        const uno::Reference< rdf::XResource > & i_xSubject,
+        const uno::Reference< rdf::XURI > & i_xPredicate,
+        const uno::Reference< rdf::XNode > & i_xObject);
+
+    /// weak reference: this is needed to check if m_pRep is valid
+    uno::WeakReference< rdf::XRepository > const m_wRep;
+    librdf_Repository *const m_pRep;
+    uno::Reference< rdf::XURI > const m_xName;
+
+    /// Querying is rather slow, so cache the results.
+    std::map<OUString, std::vector<rdf::Statement>> m_aStatementsCache;
+    std::mutex m_CacheMutex;
+};
+
+
+// css::rdf::XNode:
+OUString SAL_CALL librdf_NamedGraph::getStringValue()
+{
+    return m_xName->getStringValue();
+}
+
+// css::rdf::XURI:
+OUString SAL_CALL librdf_NamedGraph::getNamespace()
+{
+    return m_xName->getNamespace();
+}
+
+OUString SAL_CALL librdf_NamedGraph::getLocalName()
+{
+    return m_xName->getLocalName();
+}
+
+// css::rdf::XNamedGraph:
+uno::Reference< rdf::XURI > SAL_CALL librdf_NamedGraph::getName()
+{
+    return m_xName;
+}
+
+void SAL_CALL librdf_NamedGraph::clear()
+{
+    uno::Reference< rdf::XRepository > xRep( m_wRep );
+    if (!xRep.is()) {
+        throw rdf::RepositoryException(
+            "librdf_NamedGraph::clear: repository is gone", *this);
+    }
+    const OUString contextU( m_xName->getStringValue() );
+    try {
+        m_pRep->clearGraph_NoLock(contextU);
+    } catch (lang::IllegalArgumentException & ex) {
+        css::uno::Any anyEx = cppu::getCaughtException();
+        throw lang::WrappedTargetRuntimeException( ex.Message,
+                        *this, anyEx );
+    }
+    std::unique_lock g(m_CacheMutex);
+    m_aStatementsCache.clear();
+}
+
+void SAL_CALL librdf_NamedGraph::addStatement(
+    const uno::Reference< rdf::XResource > & i_xSubject,
+    const uno::Reference< rdf::XURI > & i_xPredicate,
+    const uno::Reference< rdf::XNode > & i_xObject)
+{
+    uno::Reference< rdf::XRepository > xRep( m_wRep );
+    if (!xRep.is()) {
+        throw rdf::RepositoryException(
+            "librdf_NamedGraph::addStatement: repository is gone", *this);
+    }
+    {
+        std::unique_lock g(m_CacheMutex);
+        m_aStatementsCache.clear();
+    }
+    m_pRep->addStatementGraph_NoLock(
+            i_xSubject, i_xPredicate, i_xObject, m_xName);
+}
+
+void SAL_CALL librdf_NamedGraph::removeStatements(
+    const uno::Reference< rdf::XResource > & i_xSubject,
+    const uno::Reference< rdf::XURI > & i_xPredicate,
+    const uno::Reference< rdf::XNode > & i_xObject)
+{
+    uno::Reference< rdf::XRepository > xRep( m_wRep );
+    if (!xRep.is()) {
+        throw rdf::RepositoryException(
+            "librdf_NamedGraph::removeStatements: repository is gone", *this);
+    }
+    {
+        std::unique_lock g(m_CacheMutex);
+        m_aStatementsCache.clear();
+    }
+    m_pRep->removeStatementsGraph_NoLock(
+            i_xSubject, i_xPredicate, i_xObject, m_xName);
+}
+
+OUString librdf_NamedGraph::createCacheKey_NoLock(
+    const uno::Reference< rdf::XResource > & i_xSubject,
+    const uno::Reference< rdf::XURI > & i_xPredicate,
+    const uno::Reference< rdf::XNode > & i_xObject)
+{
+    OUStringBuffer cacheKey(256);
+    librdf_TypeConverter::extractResourceToCacheKey_NoLock(i_xSubject, cacheKey);
+    cacheKey.append("\t");
+    librdf_TypeConverter::extractResourceToCacheKey_NoLock(i_xPredicate, cacheKey);
+    cacheKey.append("\t");
+    librdf_TypeConverter::extractNodeToCacheKey_NoLock(i_xObject, cacheKey);
+    return cacheKey.makeStringAndClear();
+}
+
+uno::Reference< container::XEnumeration > SAL_CALL
+librdf_NamedGraph::getStatements(
+    const uno::Reference< rdf::XResource > & i_xSubject,
+    const uno::Reference< rdf::XURI > & i_xPredicate,
+    const uno::Reference< rdf::XNode > & i_xObject)
+{
+    OUString cacheKey = createCacheKey_NoLock(i_xSubject, i_xPredicate, i_xObject);
+    {
+        std::unique_lock g(m_CacheMutex);
+        auto it = m_aStatementsCache.find(cacheKey);
+        if (it != m_aStatementsCache.end()) {
+            return new librdf_GraphResult2(it->second);
+        }
+    }
+
+    uno::Reference< rdf::XRepository > xRep( m_wRep );
+    if (!xRep.is()) {
+        throw rdf::RepositoryException(
+            "librdf_NamedGraph::getStatements: repository is gone", *this);
+    }
+    std::vector<rdf::Statement> vStatements = m_pRep->getStatementsGraph_NoLock(
+            i_xSubject, i_xPredicate, i_xObject, m_xName);
+
+    {
+        std::unique_lock g(m_CacheMutex);
+        m_aStatementsCache.emplace(cacheKey, vStatements);
+    }
+    return new librdf_GraphResult2(std::move(vStatements));
+}
+
+
+std::shared_ptr<librdf_world> librdf_Repository::m_pWorld;
+sal_uInt32 librdf_Repository::m_NumInstances = 0;
+std::mutex librdf_Repository::m_aMutex;
+
+librdf_Repository::librdf_Repository(
+        uno::Reference< uno::XComponentContext > const & i_xContext)
+    : /*BaseMutex(),*/ m_xContext(i_xContext)
+//    m_pWorld  (static_cast<librdf_world  *>(0), safe_librdf_free_world  ),
+    , m_pStorage(static_cast<librdf_storage*>(nullptr), safe_librdf_free_storage)
+    , m_pModel  (static_cast<librdf_model  *>(nullptr), safe_librdf_free_model  )
+    , m_TypeConverter(i_xContext, *this)
+{
+    OSL_ENSURE(i_xContext.is(), "librdf_Repository: null context");
+
+    std::scoped_lock g(m_aMutex);
+    if (!m_NumInstances++) {
+        m_pWorld.reset(m_TypeConverter.createWorld_Lock(),
+                safe_librdf_free_world);
+    }
+}
+
+librdf_Repository::~librdf_Repository()
+{
+    std::scoped_lock g(m_aMutex);
+
+    // must destroy these before world!
+    m_pModel.reset();
+    m_pStorage.reset();
+
+    // FIXME: so it turns out that calling librdf_free_world will
+    //   (via raptor_sax2_finish) call xmlCleanupParser, which will
+    //   free libxml2's globals! ARRRGH!!! => never call librdf_free_world
+#if 0
+    if (!--m_NumInstances) {
+        m_pWorld.reset();
+    }
+#endif
+}
+
+// com.sun.star.uno.XServiceInfo:
+OUString SAL_CALL librdf_Repository::getImplementationName()
+{
+    return "librdf_Repository";
+}
+
+sal_Bool SAL_CALL librdf_Repository::supportsService(
+    OUString const & serviceName)
+{
+    return cppu::supportsService(this, serviceName);
+}
+
+uno::Sequence< OUString > SAL_CALL
+librdf_Repository::getSupportedServiceNames()
+{
+    return { "com.sun.star.rdf.Repository" };
+}
+
+// css::rdf::XRepository:
+uno::Reference< rdf::XBlankNode > SAL_CALL librdf_Repository::createBlankNode()
+{
+    std::scoped_lock g(m_aMutex);
+    const std::shared_ptr<librdf_node> pNode(
+        librdf_new_node_from_blank_identifier(m_pWorld.get(), nullptr),
+        safe_librdf_free_node);
+    if (!pNode) {
+        throw uno::RuntimeException(
+            "librdf_Repository::createBlankNode: "
+            "librdf_new_node_from_blank_identifier failed", *this);
+    }
+    const unsigned char * id (librdf_node_get_blank_identifier(pNode.get()));
+    if (!id) {
+        throw uno::RuntimeException(
+            "librdf_Repository::createBlankNode: "
+            "librdf_node_get_blank_identifier failed", *this);
+    }
+    const OUString nodeID(OUString::createFromAscii(
+        reinterpret_cast<const char *>(id)));
+    try {
+        return rdf::BlankNode::create(m_xContext, nodeID);
+    } catch (const lang::IllegalArgumentException &) {
+        css::uno::Any anyEx = cppu::getCaughtException();
+        throw lang::WrappedTargetRuntimeException(
+                "librdf_Repository::createBlankNode: "
+                "illegal blank node label", *this, anyEx);
+    }
+}
+
+//void SAL_CALL
+uno::Reference<rdf::XNamedGraph> SAL_CALL
+librdf_Repository::importGraph(::sal_Int16 i_Format,
+    const uno::Reference< io::XInputStream > & i_xInStream,
+    const uno::Reference< rdf::XURI > & i_xGraphName,
+    const uno::Reference< rdf::XURI > & i_xBaseURI)
+{
+    if (!i_xInStream.is()) {
+        throw lang::IllegalArgumentException(
+            "librdf_Repository::importGraph: stream is null", *this, 1);
+    }
+    //FIXME: other formats
+    if (i_Format != rdf::FileFormat::RDF_XML) {
+        throw datatransfer::UnsupportedFlavorException(
+                "librdf_Repository::importGraph: file format not supported", *this);
+    }
+    if (!i_xGraphName.is()) {
+        throw lang::IllegalArgumentException(
+                "librdf_Repository::importGraph: graph name is null", *this, 2);
+    }
+    if (i_xGraphName->getStringValue().startsWith(s_nsOOo))
+    {
+        throw lang::IllegalArgumentException(
+                "librdf_Repository::importGraph: URI is reserved", *this, 0);
+    }
+    if (!i_xBaseURI.is()) { //FIXME: any i_Format that don't need a base URI?
+        throw lang::IllegalArgumentException(
+                "librdf_Repository::importGraph: base URI is null", *this, 3);
+    }
+    OSL_ENSURE(i_xBaseURI.is(), "no base uri");
+    const OUString baseURIU( i_xBaseURI->getStringValue() );
+    if (baseURIU.indexOf('#') >= 0) {
+        throw lang::IllegalArgumentException(
+                "librdf_Repository::importGraph: base URI is not absolute", *this, 3);
+    }
+
+    const OUString contextU( i_xGraphName->getStringValue() );
+
+    uno::Sequence<sal_Int8> buf;
+    uno::Reference<io::XSeekable> xSeekable(i_xInStream, uno::UNO_QUERY);
+    // UGLY: if only redland could read streams...
+    const sal_Int64 sz( xSeekable.is() ? xSeekable->getLength() : 1 << 20 );
+    // exceptions are propagated
+    i_xInStream->readBytes( buf, static_cast<sal_Int32>( sz ) );
+
+    std::scoped_lock g(m_aMutex); // don't call i_x* with mutex locked
+
+    if (m_NamedGraphs.find(contextU) != m_NamedGraphs.end()) {
+        throw container::ElementExistException(
+                "librdf_Repository::importGraph: graph with given URI exists", *this);
+    }
+    const OString context(
+        OUStringToOString(contextU, RTL_TEXTENCODING_UTF8) );
+
+    const std::shared_ptr<librdf_node> pContext(
+        librdf_new_node_from_uri_string(m_pWorld.get(),
+            reinterpret_cast<const unsigned char*> (context.getStr())),
+        safe_librdf_free_node);
+    if (!pContext) {
+        throw uno::RuntimeException(
+            "librdf_Repository::importGraph: librdf_new_node_from_uri_string failed", *this);
+    }
+
+    const OString baseURI(
+        OUStringToOString(baseURIU, RTL_TEXTENCODING_UTF8) );
+    const std::shared_ptr<librdf_uri> pBaseURI(
+        librdf_new_uri(m_pWorld.get(),
+            reinterpret_cast<const unsigned char*> (baseURI.getStr())),
+        safe_librdf_free_uri);
+    if (!pBaseURI) {
+        throw uno::RuntimeException( "librdf_Repository::importGraph: librdf_new_uri failed", *this);
+    }
+
+    const std::shared_ptr<librdf_parser> pParser(
+        librdf_new_parser(m_pWorld.get(), "rdfxml", nullptr, nullptr),
+        safe_librdf_free_parser);
+    if (!pParser) {
+        throw uno::RuntimeException(
+                "librdf_Repository::importGraph: "
+                "librdf_new_parser failed", *this);
+    }
+
+    const std::shared_ptr<librdf_stream> pStream(
+        librdf_parser_parse_counted_string_as_stream(pParser.get(),
+            reinterpret_cast<const unsigned char*>(buf.getConstArray()),
+            buf.getLength(), pBaseURI.get()),
+        safe_librdf_free_stream);
+    if (!pStream) {
+        throw rdf::ParseException(
+            "librdf_Repository::importGraph: "
+            "librdf_parser_parse_counted_string_as_stream failed", *this);
+    }
+    rtl::Reference<librdf_NamedGraph> const pGraph(
+        new librdf_NamedGraph(this, i_xGraphName));
+    m_NamedGraphs.insert(std::make_pair(contextU, pGraph));
+    if (librdf_model_context_add_statements(m_pModel.get(),
+            pContext.get(), pStream.get())) {
+        throw rdf::RepositoryException(
+            "librdf_Repository::importGraph: "
+            "librdf_model_context_add_statements failed", *this);
+    }
+
+    return pGraph;
+}
+
+void addChaffWhenEncryptedStorage(const uno::Reference< io::XOutputStream > &rStream, unsigned char* pBuffer, size_t length)
+{
+    if (!length)
+        return;
+
+    uno::Reference< embed::XEncryptionProtectedSource2 > xEncr(rStream,
+        uno::UNO_QUERY);
+
+    bool bAddChaff = xEncr.is() && xEncr->hasEncryptionData();
+
+    // exceptions are propagated
+    if (!bAddChaff)
+    {
+        const uno::Sequence<sal_Int8> buf(
+            reinterpret_cast<sal_Int8*>(pBuffer), length);
+        rStream->writeBytes(buf);
+    }
+    else
+    {
+        unsigned char *postcomment =
+            reinterpret_cast<unsigned char*>(strchr(reinterpret_cast<char*>(pBuffer), '\n'));
+        if (postcomment != nullptr)
+        {
+            ++postcomment;
+
+            size_t preamblelen = postcomment - pBuffer;
+
+            uno::Sequence<sal_Int8> buf(
+                reinterpret_cast<sal_Int8*>(pBuffer), preamblelen);
+            rStream->writeBytes(buf);
+
+            OString aComment =
+                "<!--" +
+                comphelper::xml::makeXMLChaff() +
+                "-->";
+
+            buf = uno::Sequence<sal_Int8>(
+                reinterpret_cast<const sal_Int8*>(aComment.getStr()), aComment.getLength());
+            rStream->writeBytes(buf);
+
+            buf = uno::Sequence<sal_Int8>(
+                reinterpret_cast<sal_Int8*>(postcomment), length-preamblelen);
+            rStream->writeBytes(buf);
+        }
+    }
+}
+
+void SAL_CALL
+librdf_Repository::exportGraph(::sal_Int16 i_Format,
+    const uno::Reference< io::XOutputStream > & i_xOutStream,
+    const uno::Reference< rdf::XURI > & i_xGraphName,
+    const uno::Reference< rdf::XURI > & i_xBaseURI)
+{
+    if (!i_xOutStream.is()) {
+        throw lang::IllegalArgumentException(
+                "librdf_Repository::exportGraph: stream is null", *this, 1);
+    }
+    // FIXME: other formats
+    if (i_Format != rdf::FileFormat::RDF_XML) {
+        throw datatransfer::UnsupportedFlavorException(
+                "librdf_Repository::exportGraph: "
+                "file format not supported", *this);
+    }
+    if (!i_xGraphName.is()) {
+        throw lang::IllegalArgumentException(
+                "librdf_Repository::exportGraph: "
+                "graph name is null", *this, 2);
+    }
+    if (!i_xBaseURI.is()) { //FIXME: any i_Format that don't need a base URI?
+        throw lang::IllegalArgumentException(
+                "librdf_Repository::exportGraph: "
+                "base URI is null", *this, 3);
+    }
+    OSL_ENSURE(i_xBaseURI.is(), "no base uri");
+    const OUString baseURIU( i_xBaseURI->getStringValue() );
+    if (baseURIU.indexOf('#') >= 0) {
+        throw lang::IllegalArgumentException(
+                "librdf_Repository::exportGraph: "
+                "base URI is not absolute", *this, 3);
+    }
+
+    const OUString contextU( i_xGraphName->getStringValue() );
+
+    std::unique_lock g(m_aMutex); // don't call i_x* with mutex locked
+
+    if (m_NamedGraphs.find(contextU) == m_NamedGraphs.end()) {
+        throw container::NoSuchElementException(
+                "librdf_Repository::exportGraph: "
+                "no graph with given URI exists", *this);
+    }
+    const OString context(
+        OUStringToOString(contextU, RTL_TEXTENCODING_UTF8) );
+
+    const std::shared_ptr<librdf_node> pContext(
+        librdf_new_node_from_uri_string(m_pWorld.get(),
+            reinterpret_cast<const unsigned char*> (context.getStr())),
+        safe_librdf_free_node);
+    if (!pContext) {
+        throw uno::RuntimeException(
+            "librdf_Repository::exportGraph: "
+            "librdf_new_node_from_uri_string failed", *this);
+    }
+    const OString baseURI(
+        OUStringToOString(baseURIU, RTL_TEXTENCODING_UTF8) );
+    const std::shared_ptr<librdf_uri> pBaseURI(
+        librdf_new_uri(m_pWorld.get(),
+            reinterpret_cast<const unsigned char*> (baseURI.getStr())),
+        safe_librdf_free_uri);
+    if (!pBaseURI) {
+        throw uno::RuntimeException(
+            "librdf_Repository::exportGraph: "
+            "librdf_new_uri failed", *this);
+    }
+
+    const std::shared_ptr<librdf_stream> pStream(
+        librdf_model_context_as_stream(m_pModel.get(), pContext.get()),
+        safe_librdf_free_stream);
+    if (!pStream) {
+        throw rdf::RepositoryException(
+            "librdf_Repository::exportGraph: "
+            "librdf_model_context_as_stream failed", *this);
+    }
+    const char * const format("rdfxml");
+    // #i116443#: abbrev breaks when certain URIs are used as data types
+//    const char *format("rdfxml-abbrev");
+    const std::shared_ptr<librdf_serializer> pSerializer(
+        librdf_new_serializer(m_pWorld.get(), format, nullptr, nullptr),
+        safe_librdf_free_serializer);
+    if (!pSerializer) {
+        throw uno::RuntimeException(
+            "librdf_Repository::exportGraph: "
+            "librdf_new_serializer failed", *this);
+    }
+
+    const std::shared_ptr<librdf_uri> pRelativeURI(
+        librdf_new_uri(m_pWorld.get(), reinterpret_cast<const unsigned char*>
+                ("http://feature.librdf.org/raptor-relativeURIs")),
+                 safe_librdf_free_uri);
+    const std::shared_ptr<librdf_uri> pWriteBaseURI(
+        librdf_new_uri(m_pWorld.get(), reinterpret_cast<const unsigned char*>
+            ("http://feature.librdf.org/raptor-writeBaseURI")),
+             safe_librdf_free_uri);
+    const std::shared_ptr<librdf_node> p0(
+        librdf_new_node_from_literal(m_pWorld.get(),
+            reinterpret_cast<const unsigned char*> ("0"), nullptr, 0),
+        safe_librdf_free_node);
+    const std::shared_ptr<librdf_node> p1(
+        librdf_new_node_from_literal(m_pWorld.get(),
+            reinterpret_cast<const unsigned char*> ("1"), nullptr, 0),
+        safe_librdf_free_node);
+    if (!pWriteBaseURI || !pRelativeURI || !p0 || !p1) {
+        throw uno::RuntimeException(
+            "librdf_Repository::exportGraph: "
+            "librdf_new_uri or librdf_new_node_from_literal failed", *this);
+    }
+
+    // make URIs relative to base URI
+    if (librdf_serializer_set_feature(pSerializer.get(),
+        pRelativeURI.get(), p1.get()))
+    {
+        throw uno::RuntimeException(
+            "librdf_Repository::exportGraph: "
+            "librdf_serializer_set_feature relativeURIs failed", *this);
+    }
+    // but do not write the base URI to the file!
+    if (librdf_serializer_set_feature(pSerializer.get(),
+        pWriteBaseURI.get(), p0.get()))
+    {
+        throw uno::RuntimeException(
+            "librdf_Repository::exportGraph: "
+            "librdf_serializer_set_feature writeBaseURI failed", *this);
+    }
+
+    size_t length;
+    const std::shared_ptr<unsigned char> pBuf(
+        librdf_serializer_serialize_stream_to_counted_string(
+            pSerializer.get(), pBaseURI.get(), pStream.get(), &length), free);
+    if (!pBuf) {
+        throw rdf::RepositoryException(
+            "librdf_Repository::exportGraph: "
+            "librdf_serializer_serialize_stream_to_counted_string failed",
+            *this);
+    }
+
+    g.unlock(); // release Mutex before calling i_xOutStream methods
+
+    addChaffWhenEncryptedStorage(i_xOutStream, pBuf.get(), length);
+}
+
+uno::Sequence< uno::Reference< rdf::XURI > > SAL_CALL
+librdf_Repository::getGraphNames()
+{
+    std::scoped_lock g(m_aMutex);
+    ::std::vector< uno::Reference<rdf::XURI> > ret;
+    std::transform(m_NamedGraphs.begin(), m_NamedGraphs.end(),
+        std::back_inserter(ret),
+        [](std::pair<OUString, ::rtl::Reference<librdf_NamedGraph>> const& it)
+            { return it.second->getName(); });
+    return comphelper::containerToSequence(ret);
+}
+
+uno::Reference< rdf::XNamedGraph > SAL_CALL
+librdf_Repository::getGraph(const uno::Reference< rdf::XURI > & i_xGraphName)
+{
+    if (!i_xGraphName.is()) {
+        throw lang::IllegalArgumentException(
+                "librdf_Repository::getGraph: URI is null", *this, 0);
+    }
+    const OUString contextU( i_xGraphName->getStringValue() );
+
+    std::scoped_lock g(m_aMutex);
+    const NamedGraphMap_t::iterator iter( m_NamedGraphs.find(contextU) );
+    if (iter != m_NamedGraphs.end()) {
+        return iter->second;
+    } else {
+        return nullptr;
+    }
+}
+
+uno::Reference< rdf::XNamedGraph > SAL_CALL
+librdf_Repository::createGraph(const uno::Reference< rdf::XURI > & i_xGraphName)
+{
+    if (!i_xGraphName.is()) {
+        throw lang::IllegalArgumentException(
+                "librdf_Repository::createGraph: URI is null", *this, 0);
+    }
+
+    const OUString contextU( i_xGraphName->getStringValue() );
+    if (contextU.startsWith(s_nsOOo))
+    {
+        throw lang::IllegalArgumentException(
+                "librdf_Repository::createGraph: URI is reserved", *this, 0);
+    }
+
+    std::scoped_lock g(m_aMutex); // don't call i_x* with mutex locked
+
+    // NB: librdf does not have a concept of graphs as such;
+    //     a librdf named graph exists iff the model contains a statement with
+    //     the graph name as context
+
+    if (m_NamedGraphs.find(contextU) != m_NamedGraphs.end()) {
+        throw container::ElementExistException(
+                "librdf_Repository::createGraph: graph with given URI exists", *this);
+    }
+    m_NamedGraphs.insert(std::make_pair(contextU,
+        new librdf_NamedGraph(this, i_xGraphName)));
+    return m_NamedGraphs.find(contextU)->second;
+}
+
+void SAL_CALL
+librdf_Repository::destroyGraph(
+        const uno::Reference< rdf::XURI > & i_xGraphName)
+{
+    if (!i_xGraphName.is()) {
+        throw lang::IllegalArgumentException(
+                "librdf_Repository::destroyGraph: URI is null", *this, 0);
+    }
+    const OUString contextU( i_xGraphName->getStringValue() );
+
+    std::scoped_lock g(m_aMutex); // don't call i_x* with mutex locked
+
+    const NamedGraphMap_t::iterator iter( clearGraph_Lock(contextU, false) );
+    m_NamedGraphs.erase(iter);
+}
+
+bool isMetadatableWithoutMetadata(
+    uno::Reference<uno::XInterface> const & i_xNode)
+{
+    const uno::Reference<rdf::XMetadatable> xMeta( i_xNode, uno::UNO_QUERY );
+    return (xMeta.is() && xMeta->getMetadataReference().Second.isEmpty());
+}
+
+uno::Reference< container::XEnumeration > SAL_CALL
+librdf_Repository::getStatements(
+    const uno::Reference< rdf::XResource > & i_xSubject,
+    const uno::Reference< rdf::XURI > & i_xPredicate,
+    const uno::Reference< rdf::XNode > & i_xObject)
+{
+    if (isMetadatableWithoutMetadata(i_xSubject)   ||
+        isMetadatableWithoutMetadata(i_xPredicate) ||
+        isMetadatableWithoutMetadata(i_xObject))
+    {
+        return new librdf_GraphResult(this, m_aMutex,
+            std::shared_ptr<librdf_stream>(),
+            std::shared_ptr<librdf_node>());
+    }
+
+    librdf_TypeConverter::Statement const stmt(
+        librdf_TypeConverter::extractStatement_NoLock(
+            i_xSubject, i_xPredicate, i_xObject));
+
+    std::scoped_lock g(m_aMutex); // don't call i_x* with mutex locked
+
+    const std::shared_ptr<librdf_statement> pStatement(
+        librdf_TypeConverter::mkStatement_Lock(m_pWorld.get(), stmt),
+        safe_librdf_free_statement);
+    OSL_ENSURE(pStatement, "mkStatement failed");
+
+    const std::shared_ptr<librdf_stream> pStream(
+        librdf_model_find_statements(m_pModel.get(), pStatement.get()),
+        safe_librdf_free_stream);
+    if (!pStream) {
+        throw rdf::RepositoryException(
+            "librdf_Repository::getStatements: "
+            "librdf_model_find_statements failed", *this);
+    }
+
+    return new librdf_GraphResult(this, m_aMutex, pStream,
+        std::shared_ptr<librdf_node>());
+}
+
+
+uno::Reference< rdf::XQuerySelectResult > SAL_CALL
+librdf_Repository::querySelect(const OUString & i_rQuery)
+{
+    std::scoped_lock g(m_aMutex);
+    const OString query(
+        OUStringToOString(i_rQuery, RTL_TEXTENCODING_UTF8) );
+    const std::shared_ptr<librdf_query> pQuery(
+        librdf_new_query(m_pWorld.get(), s_sparql, nullptr,
+            reinterpret_cast<const unsigned char*> (query.getStr()), nullptr),
+        safe_librdf_free_query);
+    if (!pQuery) {
+        throw rdf::QueryException(
+            "librdf_Repository::querySelect: "
+            "librdf_new_query failed", *this);
+    }
+    const std::shared_ptr<librdf_query_results> pResults(
+        librdf_model_query_execute(m_pModel.get(), pQuery.get()),
+        safe_librdf_free_query_results);
+    if (!pResults || !librdf_query_results_is_bindings(pResults.get())) {
+        throw rdf::QueryException(
+            "librdf_Repository::querySelect: "
+            "query result is null or not bindings", *this);
+    }
+
+    const int count( librdf_query_results_get_bindings_count(pResults.get()) );
+    if (count < 0) {
+        throw rdf::QueryException(
+            "librdf_Repository::querySelect: "
+            "librdf_query_results_get_bindings_count failed", *this);
+    }
+    uno::Sequence< OUString > names(count);
+    auto namesRange = asNonConstRange(names);
+    for (int i = 0; i < count; ++i) {
+        const char* name( librdf_query_results_get_binding_name(
+            pResults.get(), i) );
+        if (!name) {
+            throw rdf::QueryException(
+                "librdf_Repository::querySelect: binding is null", *this);
+        }
+
+        namesRange[i] = OUString::createFromAscii(name);
+    }
+
+    return new librdf_QuerySelectResult(this, m_aMutex,
+        pQuery, pResults, names);
+}
+
+uno::Reference< container::XEnumeration > SAL_CALL
+librdf_Repository::queryConstruct(const OUString & i_rQuery)
+{
+    std::scoped_lock g(m_aMutex);
+    const OString query(
+        OUStringToOString(i_rQuery, RTL_TEXTENCODING_UTF8) );
+    const std::shared_ptr<librdf_query> pQuery(
+        librdf_new_query(m_pWorld.get(), s_sparql, nullptr,
+            reinterpret_cast<const unsigned char*> (query.getStr()), nullptr),
+        safe_librdf_free_query);
+    if (!pQuery) {
+        throw rdf::QueryException(
+            "librdf_Repository::queryConstruct: "
+            "librdf_new_query failed", *this);
+    }
+    const std::shared_ptr<librdf_query_results> pResults(
+        librdf_model_query_execute(m_pModel.get(), pQuery.get()),
+        safe_librdf_free_query_results);
+    if (!pResults || !librdf_query_results_is_graph(pResults.get())) {
+        throw rdf::QueryException(
+            "librdf_Repository::queryConstruct: "
+            "query result is null or not graph", *this);
+    }
+    const std::shared_ptr<librdf_stream> pStream(
+        librdf_query_results_as_stream(pResults.get()),
+        safe_librdf_free_stream);
+    if (!pStream) {
+        throw rdf::QueryException(
+            "librdf_Repository::queryConstruct: "
+            "librdf_query_results_as_stream failed", *this);
+    }
+
+    return new librdf_GraphResult(this, m_aMutex, pStream,
+                                  std::shared_ptr<librdf_node>(), pQuery);
+}
+
+sal_Bool SAL_CALL
+librdf_Repository::queryAsk(const OUString & i_rQuery)
+{
+    std::scoped_lock g(m_aMutex);
+
+    const OString query(
+        OUStringToOString(i_rQuery, RTL_TEXTENCODING_UTF8) );
+    const std::shared_ptr<librdf_query> pQuery(
+        librdf_new_query(m_pWorld.get(), s_sparql, nullptr,
+            reinterpret_cast<const unsigned char*> (query.getStr()), nullptr),
+        safe_librdf_free_query);
+    if (!pQuery) {
+        throw rdf::QueryException(
+            "librdf_Repository::queryAsk: "
+            "librdf_new_query failed", *this);
+    }
+    const std::shared_ptr<librdf_query_results> pResults(
+        librdf_model_query_execute(m_pModel.get(), pQuery.get()),
+        safe_librdf_free_query_results);
+    if (!pResults || !librdf_query_results_is_boolean(pResults.get())) {
+        throw rdf::QueryException(
+            "librdf_Repository::queryAsk: "
+            "query result is null or not boolean", *this);
+    }
+    return bool(librdf_query_results_get_boolean(pResults.get()));
+}
+
+// css::rdf::XDocumentRepository:
+void SAL_CALL librdf_Repository::setStatementRDFa(
+    const uno::Reference< rdf::XResource > & i_xSubject,
+    const uno::Sequence< uno::Reference< rdf::XURI > > & i_rPredicates,
+    const uno::Reference< rdf::XMetadatable > & i_xObject,
+    const OUString & i_rRDFaContent,
+    const uno::Reference< rdf::XURI > & i_xRDFaDatatype)
+{
+    if (!i_xSubject.is()) {
+        throw lang::IllegalArgumentException(
+            "librdf_Repository::setStatementRDFa: Subject is null", *this, 0);
+    }
+    if (!i_rPredicates.hasElements()) {
+        throw lang::IllegalArgumentException(
+            "librdf_Repository::setStatementRDFa: no Predicates",
+            *this, 1);
+    }
+    if (std::any_of(i_rPredicates.begin(), i_rPredicates.end(),
+            [](const uno::Reference< rdf::XURI >& rPredicate) { return !rPredicate.is(); })) {
+        throw lang::IllegalArgumentException(
+            "librdf_Repository::setStatementRDFa: Predicate is null", *this, 1);
+    }
+    if (!i_xObject.is()) {
+        throw lang::IllegalArgumentException(
+            "librdf_Repository::setStatementRDFa: Object is null", *this, 2);
+    }
+    const uno::Reference<lang::XServiceInfo> xService(i_xObject,
+        uno::UNO_QUERY_THROW);
+    uno::Reference<text::XTextRange> xTextRange;
+    if (xService->supportsService("com.sun.star.table.Cell") ||
+        xService->supportsService("com.sun.star.text.CellProperties") || // for writer
+        xService->supportsService("com.sun.star.text.Paragraph"))
+    {
+        xTextRange.set(i_xObject, uno::UNO_QUERY_THROW);
+    }
+    else if (xService->supportsService("com.sun.star.text.Bookmark") ||
+             xService->supportsService("com.sun.star.text.InContentMetadata"))
+    {
+        const uno::Reference<text::XTextContent> xTextContent(i_xObject,
+            uno::UNO_QUERY_THROW);
+        xTextRange = xTextContent->getAnchor();
+    }
+    if (!xTextRange.is()) {
+        throw lang::IllegalArgumentException(
+            "librdf_Repository::setStatementRDFa: "
+            "Object does not support RDFa", *this, 2);
+    }
+    // ensure that the metadatable has an XML ID
+    i_xObject->ensureMetadataReference();
+    const beans::StringPair mdref( i_xObject->getMetadataReference() );
+    if ((mdref.First.isEmpty()) || (mdref.Second.isEmpty())) {
+        throw uno::RuntimeException(
+                "librdf_Repository::setStatementRDFa: "
+                "ensureMetadataReference did not", *this);
+    }
+    OUString const sXmlId(mdref.First + "#" + mdref.Second);
+    OUString const sContext(s_nsOOo + sXmlId);
+    OUString const content( (i_rRDFaContent.isEmpty())
+            ? xTextRange->getString()
+            : i_rRDFaContent );
+    uno::Reference<rdf::XNode> xContent;
+    try {
+        if (i_xRDFaDatatype.is()) {
+            xContent.set(rdf::Literal::createWithType(m_xContext,
+                    content, i_xRDFaDatatype),
+                uno::UNO_QUERY_THROW);
+        } else {
+            xContent.set(rdf::Literal::create(m_xContext, content),
+                uno::UNO_QUERY_THROW);
+        }
+    } catch (const lang::IllegalArgumentException &) {
+        css::uno::Any anyEx = cppu::getCaughtException();
+        throw lang::WrappedTargetRuntimeException(
+                "librdf_Repository::setStatementRDFa: "
+                "cannot create literal", *this, anyEx);
+    }
+
+    std::shared_ptr<librdf_TypeConverter::Resource> const pSubject(
+        librdf_TypeConverter::extractResource_NoLock(i_xSubject));
+    std::shared_ptr<librdf_TypeConverter::Node> const pContent(
+        librdf_TypeConverter::extractNode_NoLock(xContent));
+    ::std::vector< std::shared_ptr<librdf_TypeConverter::Resource> >
+        predicates;
+    ::std::transform(i_rPredicates.begin(), i_rPredicates.end(),
+        ::std::back_inserter(predicates),
+        [](uno::Reference<rdf::XURI> const& xURI)
+            { return librdf_TypeConverter::extractResource_NoLock(xURI); });
+
+    removeStatementRDFa(i_xObject); // not atomic with insertion?
+
+    std::scoped_lock g(m_aMutex); // don't call i_x* with mutex locked
+
+    if (i_rRDFaContent.isEmpty()) {
+        m_RDFaXHTMLContentSet.erase(sXmlId);
+    } else {
+        m_RDFaXHTMLContentSet.insert(sXmlId);
+    }
+    try
+    {
+        for (const auto& rPredicatePtr : predicates)
+        {
+            addStatementGraph_Lock(
+                librdf_TypeConverter::Statement(pSubject,
+                    std::dynamic_pointer_cast<librdf_TypeConverter::URI>(rPredicatePtr),
+                    pContent),
+                sContext, true);
+        }
+    }
+    catch (const container::NoSuchElementException&)
+    {
+        css::uno::Any anyEx = cppu::getCaughtException();
+        throw lang::WrappedTargetRuntimeException(
+                "librdf_Repository::setStatementRDFa: "
+                "cannot addStatementGraph", *this, anyEx);
+    }
+}
+
+void SAL_CALL librdf_Repository::removeStatementRDFa(
+    const uno::Reference< rdf::XMetadatable > & i_xElement)
+{
+    if (!i_xElement.is()) {
+        throw lang::IllegalArgumentException(
+            "librdf_Repository::removeStatementRDFa: Element is null",
+            *this, 0);
+    }
+
+    const beans::StringPair mdref( i_xElement->getMetadataReference() );
+    if ((mdref.First.isEmpty()) || (mdref.Second.isEmpty())) {
+        return; // nothing to do...
+    }
+
+    OUString const sXmlId(s_nsOOo + mdref.First + "#" + mdref.Second);
+
+    clearGraph_NoLock(sXmlId, true);
+}
+
+beans::Pair< uno::Sequence<rdf::Statement>, sal_Bool > SAL_CALL
+librdf_Repository::getStatementRDFa(
+    const uno::Reference< rdf::XMetadatable > & i_xElement)
+{
+    if (!i_xElement.is()) {
+        throw lang::IllegalArgumentException(
+            "librdf_Repository::getStatementRDFa: Element is null", *this, 0);
+    }
+    const beans::StringPair mdref( i_xElement->getMetadataReference() );
+    if ((mdref.First.isEmpty()) || (mdref.Second.isEmpty())) {
+        return beans::Pair< uno::Sequence<rdf::Statement>, sal_Bool >();
+    }
+    OUString const sXmlId(mdref.First + "#" + mdref.Second);
+    uno::Reference<rdf::XURI> xXmlId;
+    try {
+        xXmlId.set( rdf::URI::create(m_xContext, s_nsOOo + sXmlId),
+            uno::UNO_SET_THROW);
+    } catch (const lang::IllegalArgumentException &) {
+        css::uno::Any anyEx = cppu::getCaughtException();
+        throw lang::WrappedTargetRuntimeException(
+                "librdf_Repository::getStatementRDFa: "
+                "cannot create URI for XML ID", *this, anyEx);
+    }
+
+    ::std::vector< rdf::Statement > ret;
+    try
+    {
+        ret = getStatementsGraph_NoLock(nullptr, nullptr, nullptr, xXmlId, true);
+    }
+    catch (const container::NoSuchElementException&)
+    {
+        css::uno::Any anyEx = cppu::getCaughtException();
+        throw lang::WrappedTargetRuntimeException(
+                "librdf_Repository::getStatementRDFa: "
+                "cannot getStatementsGraph", *this, anyEx);
+    }
+
+    std::scoped_lock g(m_aMutex); // don't call i_x* with mutex locked
+
+    return beans::Pair< uno::Sequence<rdf::Statement>, sal_Bool >(
+            comphelper::containerToSequence(ret), 0 != m_RDFaXHTMLContentSet.count(sXmlId));
+}
+
+extern "C"
+librdf_statement *rdfa_context_stream_map_handler(
+    librdf_stream *i_pStream, void *, librdf_statement *i_pStatement)
+{
+    OSL_ENSURE(i_pStream, "rdfa_context_stream_map_handler: stream null");
+    if (i_pStream) {
+        librdf_node *pCtxt(
+#if LIBRDF_VERSION >= 10012
+            librdf_stream_get_context2(i_pStream) );
+#else
+            static_cast<librdf_node *>(librdf_stream_get_context(i_pStream)) );
+#endif
+        OSL_ENSURE(pCtxt, "rdfa_context_stream_map_handler: context null");
+        if (pCtxt && isInternalContext(pCtxt)) {
+            return i_pStatement;
+        }
+    }
+    return nullptr;
+};
+
+uno::Reference< container::XEnumeration > SAL_CALL
+librdf_Repository::getStatementsRDFa(
+    const uno::Reference< rdf::XResource > & i_xSubject,
+    const uno::Reference< rdf::XURI > & i_xPredicate,
+    const uno::Reference< rdf::XNode > & i_xObject)
+{
+    if (isMetadatableWithoutMetadata(i_xSubject)   ||
+        isMetadatableWithoutMetadata(i_xPredicate) ||
+        isMetadatableWithoutMetadata(i_xObject))
+    {
+        return new librdf_GraphResult(this, m_aMutex,
+            std::shared_ptr<librdf_stream>(),
+            std::shared_ptr<librdf_node>());
+    }
+
+    librdf_TypeConverter::Statement const stmt(
+        librdf_TypeConverter::extractStatement_NoLock(
+            i_xSubject, i_xPredicate, i_xObject));
+
+    std::scoped_lock g(m_aMutex); // don't call i_x* with mutex locked
+
+    const std::shared_ptr<librdf_statement> pStatement(
+        librdf_TypeConverter::mkStatement_Lock(m_pWorld.get(), stmt),
+        safe_librdf_free_statement);
+    OSL_ENSURE(pStatement, "mkStatement failed");
+
+    const std::shared_ptr<librdf_stream> pStream(
+        librdf_model_find_statements(m_pModel.get(), pStatement.get()),
+        safe_librdf_free_stream);
+    if (!pStream) {
+        throw rdf::RepositoryException(
+            "librdf_Repository::getStatementsRDFa: "
+            "librdf_model_find_statements failed", *this);
+    }
+
+    if (librdf_stream_add_map(pStream.get(), rdfa_context_stream_map_handler,
+                nullptr, nullptr)) {
+        throw rdf::RepositoryException(
+            "librdf_Repository::getStatementsRDFa: "
+            "librdf_stream_add_map failed", *this);
+    }
+
+    return new librdf_GraphResult(this, m_aMutex, pStream,
+                                  std::shared_ptr<librdf_node>());
+}
+
+// css::lang::XInitialization:
+void SAL_CALL librdf_Repository::initialize(
+    const uno::Sequence< css::uno::Any > &)
+{
+    std::scoped_lock g(m_aMutex);
+
+//    m_pWorld.reset(m_TypeConverter.createWorld(), safe_librdf_free_world);
+    m_pStorage.reset(m_TypeConverter.createStorage_Lock(m_pWorld.get()),
+        safe_librdf_free_storage);
+    m_pModel.reset(m_TypeConverter.createModel_Lock(
+        m_pWorld.get(), m_pStorage.get()), safe_librdf_free_model);
+}
+
+NamedGraphMap_t::iterator librdf_Repository::clearGraph_NoLock(
+        OUString const& i_rGraphName, bool i_Internal)
+//    throw (uno::RuntimeException, container::NoSuchElementException,
+//        rdf::RepositoryException)
+{
+    std::scoped_lock g(m_aMutex);
+
+    return clearGraph_Lock(i_rGraphName, i_Internal);
+}
+
+NamedGraphMap_t::iterator librdf_Repository::clearGraph_Lock(
+        OUString const& i_rGraphName, bool i_Internal)
+{
+    // internal: must be called with mutex locked!
+    const NamedGraphMap_t::iterator iter( m_NamedGraphs.find(i_rGraphName) );
+    if (!i_Internal && iter == m_NamedGraphs.end()) {
+        throw container::NoSuchElementException(
+                "librdf_Repository::clearGraph: "
+                "no graph with given URI exists", *this);
+    }
+    const OString context(
+        OUStringToOString(i_rGraphName, RTL_TEXTENCODING_UTF8) );
+
+    const std::shared_ptr<librdf_node> pContext(
+        librdf_new_node_from_uri_string(m_pWorld.get(),
+            reinterpret_cast<const unsigned char*> (context.getStr())),
+        safe_librdf_free_node);
+    if (!pContext) {
+        throw uno::RuntimeException(
+            "librdf_Repository::clearGraph: "
+            "librdf_new_node_from_uri_string failed", *this);
+    }
+    if (librdf_model_context_remove_statements(m_pModel.get(), pContext.get()))
+    {
+        throw rdf::RepositoryException(
+            "librdf_Repository::clearGraph: "
+            "librdf_model_context_remove_statements failed", *this);
+    }
+    return iter;
+}
+
+void librdf_Repository::addStatementGraph_NoLock(
+    const uno::Reference< rdf::XResource > & i_xSubject,
+    const uno::Reference< rdf::XURI > & i_xPredicate,
+    const uno::Reference< rdf::XNode > & i_xObject,
+    const uno::Reference< rdf::XURI > & i_xGraphName)
+//throw (uno::RuntimeException, lang::IllegalArgumentException,
+//    container::NoSuchElementException, rdf::RepositoryException)
+{
+    if (!i_xSubject.is()) {
+        throw lang::IllegalArgumentException(
+            "librdf_Repository::addStatement: Subject is null", *this, 0);
+    }
+    if (!i_xPredicate.is()) {
+        throw lang::IllegalArgumentException(
+            "librdf_Repository::addStatement: Predicate is null",
+            *this, 1);
+    }
+    if (!i_xObject.is()) {
+        throw lang::IllegalArgumentException(
+            "librdf_Repository::addStatement: Object is null", *this, 2);
+    }
+
+    librdf_TypeConverter::Statement const stmt(
+        librdf_TypeConverter::extractStatement_NoLock(
+            i_xSubject, i_xPredicate, i_xObject));
+
+    const OUString contextU( i_xGraphName->getStringValue() );
+
+    std::scoped_lock g(m_aMutex); // don't call i_x* with mutex locked
+
+    addStatementGraph_Lock(stmt, contextU, false/*i_Internal*/);
+}
+
+void librdf_Repository::addStatementGraph_Lock(
+    librdf_TypeConverter::Statement const& i_rStatement,
+    OUString const& i_rGraphName,
+    bool i_Internal)
+{
+    if (!i_Internal
+        && (m_NamedGraphs.find(i_rGraphName) == m_NamedGraphs.end()))
+    {
+        throw container::NoSuchElementException(
+                "librdf_Repository::addStatement: "
+                "no graph with given URI exists", *this);
+    }
+    const OString context(
+        OUStringToOString(i_rGraphName, RTL_TEXTENCODING_UTF8) );
+
+    const std::shared_ptr<librdf_node> pContext(
+        librdf_new_node_from_uri_string(m_pWorld.get(),
+            reinterpret_cast<const unsigned char*> (context.getStr())),
+        safe_librdf_free_node);
+    if (!pContext) {
+        throw uno::RuntimeException(
+            "librdf_Repository::addStatement: "
+            "librdf_new_node_from_uri_string failed", *this);
+    }
+    const std::shared_ptr<librdf_statement> pStatement(
+        librdf_TypeConverter::mkStatement_Lock(m_pWorld.get(), i_rStatement),
+        safe_librdf_free_statement);
+    OSL_ENSURE(pStatement, "mkStatement failed");
+
+    // Test for duplicate statement
+    // librdf_model_add_statement disallows duplicates while
+    // librdf_model_context_add_statement allows duplicates
+    {
+        const std::shared_ptr<librdf_stream> pStream(
+            librdf_model_find_statements_in_context(m_pModel.get(),
+                pStatement.get(), pContext.get()),
+            safe_librdf_free_stream);
+        if (pStream && !librdf_stream_end(pStream.get()))
+            return;
+    }
+
+    if (librdf_model_context_add_statement(m_pModel.get(),
+            pContext.get(), pStatement.get())) {
+        throw rdf::RepositoryException(
+            "librdf_Repository::addStatement: "
+            "librdf_model_context_add_statement failed", *this);
+    }
+}
+
+void librdf_Repository::removeStatementsGraph_NoLock(
+    const uno::Reference< rdf::XResource > & i_xSubject,
+    const uno::Reference< rdf::XURI > & i_xPredicate,
+    const uno::Reference< rdf::XNode > & i_xObject,
+    const uno::Reference< rdf::XURI > & i_xGraphName)
+//throw (uno::RuntimeException, lang::IllegalArgumentException,
+//    container::NoSuchElementException, rdf::RepositoryException)
+{
+    if (isMetadatableWithoutMetadata(i_xSubject)   ||
+        isMetadatableWithoutMetadata(i_xPredicate) ||
+        isMetadatableWithoutMetadata(i_xObject))
+    {
+        return;
+    }
+
+    librdf_TypeConverter::Statement const stmt(
+        librdf_TypeConverter::extractStatement_NoLock(
+            i_xSubject, i_xPredicate, i_xObject));
+    const OUString contextU( i_xGraphName->getStringValue() );
+
+    std::scoped_lock g(m_aMutex); // don't call i_x* with mutex locked
+
+    if (m_NamedGraphs.find(contextU) == m_NamedGraphs.end()) {
+        throw container::NoSuchElementException(
+                "librdf_Repository::removeStatements: "
+                "no graph with given URI exists", *this);
+    }
+    const OString context(
+        OUStringToOString(contextU, RTL_TEXTENCODING_UTF8) );
+
+    const std::shared_ptr<librdf_node> pContext(
+        librdf_new_node_from_uri_string(m_pWorld.get(),
+            reinterpret_cast<const unsigned char*> (context.getStr())),
+        safe_librdf_free_node);
+    if (!pContext) {
+        throw uno::RuntimeException(
+            "librdf_Repository::removeStatements: "
+            "librdf_new_node_from_uri_string failed", *this);
+    }
+    const std::shared_ptr<librdf_statement> pStatement(
+        librdf_TypeConverter::mkStatement_Lock(m_pWorld.get(), stmt),
+        safe_librdf_free_statement);
+    OSL_ENSURE(pStatement, "mkStatement failed");
+
+    const std::shared_ptr<librdf_stream> pStream(
+        librdf_model_find_statements_in_context(m_pModel.get(),
+            pStatement.get(), pContext.get()),
+        safe_librdf_free_stream);
+    if (!pStream) {
+        throw rdf::RepositoryException(
+            "librdf_Repository::removeStatements: "
+            "librdf_model_find_statements_in_context failed", *this);
+    }
+
+    if (librdf_stream_end(pStream.get()))
+        return;
+
+    do {
+        librdf_statement *pStmt( librdf_stream_get_object(pStream.get()) );
+        if (!pStmt) {
+            throw rdf::RepositoryException(
+                "librdf_Repository::removeStatements: "
+                "librdf_stream_get_object failed", *this);
+        }
+        if (librdf_model_context_remove_statement(m_pModel.get(),
+                pContext.get(), pStmt)) {
+            throw rdf::RepositoryException(
+                "librdf_Repository::removeStatements: "
+                "librdf_model_context_remove_statement failed", *this);
+        }
+    } while (!librdf_stream_next(pStream.get()));
+}
+
+std::vector<rdf::Statement>
+librdf_Repository::getStatementsGraph_NoLock(
+    const uno::Reference< rdf::XResource > & i_xSubject,
+    const uno::Reference< rdf::XURI > & i_xPredicate,
+    const uno::Reference< rdf::XNode > & i_xObject,
+    const uno::Reference< rdf::XURI > & i_xGraphName,
+    bool i_Internal)
+//throw (uno::RuntimeException, lang::IllegalArgumentException,
+//    container::NoSuchElementException, rdf::RepositoryException)
+{
+    std::vector<rdf::Statement> ret;
+
+    // N.B.: if any of subject, predicate, object is an XMetadatable, and
+    // has no metadata reference, then there cannot be any node in the graph
+    // representing it; in order to prevent side effect
+    // (ensureMetadataReference), check for this condition and return
+    if (isMetadatableWithoutMetadata(i_xSubject)   ||
+        isMetadatableWithoutMetadata(i_xPredicate) ||
+        isMetadatableWithoutMetadata(i_xObject))
+    {
+        return ret;
+    }
+
+    librdf_TypeConverter::Statement const stmt(
+        librdf_TypeConverter::extractStatement_NoLock(
+            i_xSubject, i_xPredicate, i_xObject));
+    const OUString contextU( i_xGraphName->getStringValue() );
+
+    std::scoped_lock g(m_aMutex); // don't call i_x* with mutex locked
+
+    if (!i_Internal && (m_NamedGraphs.find(contextU) == m_NamedGraphs.end())) {
+        throw container::NoSuchElementException(
+                "librdf_Repository::getStatements: "
+                "no graph with given URI exists", *this);
+    }
+    const OString context(
+        OUStringToOString(contextU, RTL_TEXTENCODING_UTF8) );
+
+    const std::shared_ptr<librdf_node> pContext(
+        librdf_new_node_from_uri_string(m_pWorld.get(),
+            reinterpret_cast<const unsigned char*> (context.getStr())),
+        safe_librdf_free_node);
+    if (!pContext) {
+        throw uno::RuntimeException(
+            "librdf_Repository::getStatements: "
+            "librdf_new_node_from_uri_string failed", *this);
+    }
+    const std::shared_ptr<librdf_statement> pStatement(
+        librdf_TypeConverter::mkStatement_Lock(m_pWorld.get(), stmt),
+        safe_librdf_free_statement);
+    OSL_ENSURE(pStatement, "mkStatement failed");
+
+    const std::shared_ptr<librdf_stream> pStream(
+        librdf_model_find_statements_in_context(m_pModel.get(),
+            pStatement.get(), pContext.get()),
+        safe_librdf_free_stream);
+    if (!pStream) {
+        throw rdf::RepositoryException(
+            "librdf_Repository::getStatements: "
+            "librdf_model_find_statements_in_context failed", *this);
+    }
+
+    librdf_node *pCtxt1(
+#if LIBRDF_VERSION >= 10012
+        librdf_stream_get_context2(pStream.get()) );
+#else
+        static_cast<librdf_node *>(librdf_stream_get_context(pStream.get())) );
+#endif
+    while (!librdf_stream_end(pStream.get()))
+    {
+        auto pCtxt = pCtxt1;
+        librdf_statement *pStmt( librdf_stream_get_object(pStream.get()) );
+        if (!pStmt) {
+            rdf::QueryException e(
+                "librdf_GraphResult::nextElement: "
+                "librdf_stream_get_object failed", *this);
+            throw lang::WrappedTargetException(
+                "librdf_GraphResult::nextElement: "
+                "librdf_stream_get_object failed", *this,
+                    uno::Any(e));
+        }
+        // NB: pCtxt may be null here if this is result of a graph query
+        if (pCtxt && isInternalContext(pCtxt)) {
+            pCtxt = nullptr; // XML ID context is implementation detail!
+        }
+
+        ret.emplace_back(
+            getTypeConverter().convertToStatement(pStmt, pCtxt) );
+
+        // NB: this will invalidate current item.
+        librdf_stream_next(pStream.get());
+    }
+
+    return ret;
+}
+
+extern "C"
+void librdf_raptor_init(void* /*user_data*/, raptor_world* pRaptorWorld)
+{
+    // fdo#64672 prevent raptor from setting global libxml2 error handlers
+    raptor_world_set_flag(pRaptorWorld,
+            RAPTOR_WORLD_FLAG_LIBXML_STRUCTURED_ERROR_SAVE, 0);
+    raptor_world_set_flag(pRaptorWorld,
+            RAPTOR_WORLD_FLAG_LIBXML_GENERIC_ERROR_SAVE, 0);
+}
+
+librdf_world *librdf_TypeConverter::createWorld_Lock() const
+{
+    // create and initialize world
+    librdf_world *pWorld( librdf_new_world() );
+    if (!pWorld) {
+        throw uno::RuntimeException(
+            "librdf_TypeConverter::createWorld: librdf_new_world failed",
+            m_rRep);
+    }
+    librdf_world_set_raptor_init_handler(pWorld, nullptr, &librdf_raptor_init);
+    //FIXME logger, digest, features?
+    xsltSecurityPrefsPtr origprefs = xsltGetDefaultSecurityPrefs();
+    librdf_world_open(pWorld);
+    xsltSecurityPrefsPtr newprefs = xsltGetDefaultSecurityPrefs();
+    if (newprefs != origprefs) {
+        // #i110523# restore libxslt global configuration
+        // (gratuitously overwritten by raptor_init_parser_grddl_common)
+        // (this is the only reason unordf is linked against libxslt)
+        xsltSetDefaultSecurityPrefs(origprefs);
+    }
+    return pWorld;
+}
+
+librdf_storage *
+librdf_TypeConverter::createStorage_Lock(librdf_world *i_pWorld) const
+{
+    librdf_storage *pStorage(
+//        librdf_new_storage(i_pWorld, "memory", NULL, "contexts='yes'") );
+        librdf_new_storage(i_pWorld, "hashes", nullptr,
+            "contexts='yes',hash-type='memory'") );
+    if (!pStorage) {
+        throw uno::RuntimeException(
+            "librdf_TypeConverter::createStorage: librdf_new_storage failed",
+            m_rRep);
+    }
+    return pStorage;
+}
+
+librdf_model *librdf_TypeConverter::createModel_Lock(
+    librdf_world *i_pWorld, librdf_storage * i_pStorage) const
+{
+    librdf_model *pRepository( librdf_new_model(i_pWorld, i_pStorage, nullptr) );
+    if (!pRepository) {
+        throw uno::RuntimeException(
+            "librdf_TypeConverter::createModel: librdf_new_model failed",
+            m_rRep);
+    }
+    //FIXME
+#if 0
+    {
+        librdf_uri * ctxt = librdf_new_uri(i_pWorld, reinterpret_cast<const unsigned char *>(LIBRDF_MODEL_FEATURE_CONTEXTS));
+        librdf_node * contexts = librdf_model_get_feature(repository, ctxt);
+        if (!contexts)
+            throw;
+        std::cout << "value of contexts feature: ";
+        prtNode(contexts);
+        std::cout << std::endl;
+        // librdf_model_set_feature(repository, LIBRDF_FEATURE_CONTEXTS, ...);
+        safe_librdf_free_node(contexts);
+        safe_librdf_free_uri(ctxt);
+    }
+#endif
+    return pRepository;
+}
+
+// this does NOT create a node, only URI
+librdf_uri* librdf_TypeConverter::mkURI_Lock( librdf_world* i_pWorld,
+    OString const& i_rURI)
+{
+    librdf_uri *pURI( librdf_new_uri(i_pWorld,
+        reinterpret_cast<const unsigned char *>(i_rURI.getStr())));
+    if (!pURI) {
+        throw uno::RuntimeException(
+            "librdf_TypeConverter::mkURI: librdf_new_uri failed", nullptr);
+    }
+    return pURI;
+}
+
+// extract blank or URI node - call without Mutex locked
+std::shared_ptr<librdf_TypeConverter::Resource>
+librdf_TypeConverter::extractResource_NoLock(
+    const uno::Reference< rdf::XResource > & i_xResource)
+{
+    if (!i_xResource.is()) {
+        return std::shared_ptr<Resource>();
+    }
+    uno::Reference< rdf::XBlankNode > xBlankNode(i_xResource, uno::UNO_QUERY);
+    if (xBlankNode.is()) {
+        const OString label(
+            OUStringToOString(xBlankNode->getStringValue(),
+            RTL_TEXTENCODING_UTF8) );
+        return std::make_shared<BlankNode>(label);
+    } else { // assumption: everything else is URI
+        const OString uri(
+            OUStringToOString(i_xResource->getStringValue(),
+            RTL_TEXTENCODING_UTF8) );
+        return std::make_shared<URI>(uri);
+    }
+}
+
+void
+librdf_TypeConverter::extractResourceToCacheKey_NoLock(
+    const uno::Reference< rdf::XResource > & i_xResource, OUStringBuffer& rBuffer)
+{
+    if (!i_xResource.is()) {
+        return;
+    }
+    uno::Reference< rdf::XBlankNode > xBlankNode(i_xResource, uno::UNO_QUERY);
+    if (xBlankNode.is()) {
+        rBuffer.append("BlankNode " + xBlankNode->getStringValue());
+    } else { // assumption: everything else is URI
+        rBuffer.append("URI " + i_xResource->getStringValue());
+    }
+}
+
+// create blank or URI node
+librdf_node* librdf_TypeConverter::mkResource_Lock( librdf_world* i_pWorld,
+    Resource const*const i_pResource)
+{
+    if (!i_pResource) return nullptr;
+    BlankNode const*const pBlankNode(
+            dynamic_cast<BlankNode const*>(i_pResource));
+    if (pBlankNode) {
+        librdf_node *pNode(
+            librdf_new_node_from_blank_identifier(i_pWorld,
+                reinterpret_cast<const unsigned char*>(
+                    pBlankNode->value.getStr())));
+        if (!pNode) {
+            throw uno::RuntimeException(
+                "librdf_TypeConverter::mkResource: "
+                "librdf_new_node_from_blank_identifier failed", nullptr);
+        }
+        return pNode;
+    } else { // assumption: everything else is URI
+        URI const*const pURI(dynamic_cast<URI const*>(i_pResource));
+        assert(pURI);
+        librdf_node *pNode(
+            librdf_new_node_from_uri_string(i_pWorld,
+                reinterpret_cast<const unsigned char*>(pURI->value.getStr())));
+        if (!pNode) {
+            throw uno::RuntimeException(
+                "librdf_TypeConverter::mkResource: "
+                "librdf_new_node_from_uri_string failed", nullptr);
+        }
+        return pNode;
+    }
+}
+
+// extract blank or URI or literal node - call without Mutex locked
+std::shared_ptr<librdf_TypeConverter::Node>
+librdf_TypeConverter::extractNode_NoLock(
+    const uno::Reference< rdf::XNode > & i_xNode)
+{
+    if (!i_xNode.is()) {
+        return std::shared_ptr<Node>();
+    }
+    uno::Reference< rdf::XResource > xResource(i_xNode, uno::UNO_QUERY);
+    if (xResource.is()) {
+        return extractResource_NoLock(xResource);
+    }
+    uno::Reference< rdf::XLiteral> xLiteral(i_xNode, uno::UNO_QUERY);
+    OSL_ENSURE(xLiteral.is(),
+        "mkNode: someone invented a new rdf.XNode and did not tell me");
+    if (!xLiteral.is()) {
+        return std::shared_ptr<Node>();
+    }
+    const OString val(
+        OUStringToOString(xLiteral->getValue(),
+        RTL_TEXTENCODING_UTF8) );
+    const OString lang(
+        OUStringToOString(xLiteral->getLanguage(),
+        RTL_TEXTENCODING_UTF8) );
+    const uno::Reference< rdf::XURI > xType(xLiteral->getDatatype());
+    std::optional<OString> type;
+    if (xType.is())
+    {
+        type =
+            OUStringToOString(xType->getStringValue(), RTL_TEXTENCODING_UTF8);
+    }
+    return std::make_shared<Literal>(val, lang, type);
+}
+
+// extract blank or URI or literal node - call without Mutex locked
+void
+librdf_TypeConverter::extractNodeToCacheKey_NoLock(
+    const uno::Reference< rdf::XNode > & i_xNode,
+    OUStringBuffer& rBuffer)
+{
+    if (!i_xNode.is()) {
+        return;
+    }
+    uno::Reference< rdf::XResource > xResource(i_xNode, uno::UNO_QUERY);
+    if (xResource.is()) {
+        return extractResourceToCacheKey_NoLock(xResource, rBuffer);
+    }
+    uno::Reference< rdf::XLiteral> xLiteral(i_xNode, uno::UNO_QUERY);
+    OSL_ENSURE(xLiteral.is(),
+        "mkNode: someone invented a new rdf.XNode and did not tell me");
+    if (!xLiteral.is()) {
+        return;
+    }
+    rBuffer.append("Literal " + xLiteral->getValue() + "\t" + xLiteral->getLanguage());
+    const uno::Reference< rdf::XURI > xType(xLiteral->getDatatype());
+    if (xType.is())
+        rBuffer.append("\t" + xType->getStringValue());
+}
+
+// create blank or URI or literal node
+librdf_node* librdf_TypeConverter::mkNode_Lock( librdf_world* i_pWorld,
+    Node const*const i_pNode)
+{
+    if (!i_pNode) return nullptr;
+    Resource const*const pResource(dynamic_cast<Resource const*>(i_pNode));
+    if (pResource) {
+        return mkResource_Lock(i_pWorld, pResource);
+    }
+
+    Literal const*const pLiteral(dynamic_cast<Literal const*>(i_pNode));
+    assert(pLiteral);
+    librdf_node * ret(nullptr);
+    if (pLiteral->language.isEmpty()) {
+        if (!pLiteral->type) {
+            ret = librdf_new_node_from_literal(i_pWorld,
+                reinterpret_cast<const unsigned char*>(pLiteral->value.getStr())
+                , nullptr, 0);
+        } else {
+            const std::shared_ptr<librdf_uri> pDatatype(
+                mkURI_Lock(i_pWorld, *pLiteral->type),
+                safe_librdf_free_uri);
+            ret = librdf_new_node_from_typed_literal(i_pWorld,
+                reinterpret_cast<const unsigned char*>(pLiteral->value.getStr())
+                , nullptr, pDatatype.get());
+        }
+    } else {
+        if (!pLiteral->type) {
+            ret = librdf_new_node_from_literal(i_pWorld,
+                reinterpret_cast<const unsigned char*>(pLiteral->value.getStr())
+                , pLiteral->language.getStr(), 0);
+        } else {
+            OSL_FAIL("mkNode: invalid literal");
+            return nullptr;
+        }
+    }
+    if (!ret) {
+        throw uno::RuntimeException(
+            "librdf_TypeConverter::mkNode: librdf_new_node_from_literal failed", nullptr);
+    }
+    return ret;
+}
+
+// extract statement - call without Mutex locked
+librdf_TypeConverter::Statement librdf_TypeConverter::extractStatement_NoLock(
+    const uno::Reference< rdf::XResource > & i_xSubject,
+    const uno::Reference< rdf::XURI > & i_xPredicate,
+    const uno::Reference< rdf::XNode > & i_xObject)
+{
+    std::shared_ptr<Resource> const pSubject(
+            extractResource_NoLock(i_xSubject));
+    std::shared_ptr<URI> const pPredicate(
+        std::dynamic_pointer_cast<URI>(extractResource_NoLock(i_xPredicate)));
+    std::shared_ptr<Node> const pObject(extractNode_NoLock(i_xObject));
+    return Statement(pSubject, pPredicate, pObject);
+}
+
+librdf_statement* librdf_TypeConverter::mkStatement_Lock(librdf_world* i_pWorld,
+    Statement const& i_rStatement)
+{
+    librdf_node *const pSubject(
+            mkResource_Lock(i_pWorld, i_rStatement.pSubject.get()) );
+    librdf_node* pPredicate(nullptr);
+    librdf_node* pObject(nullptr);
+    try {
+        pPredicate = mkResource_Lock(i_pWorld, i_rStatement.pPredicate.get());
+        try {
+            pObject = mkNode_Lock(i_pWorld, i_rStatement.pObject.get());
+        } catch (...) {
+            safe_librdf_free_node(pPredicate);
+            throw;
+        }
+    } catch (...) {
+        safe_librdf_free_node(pSubject);
+        throw;
+    }
+    // NB: this takes ownership of the nodes! (which is really ugly)
+    librdf_statement* pStatement( librdf_new_statement_from_nodes(i_pWorld,
+        pSubject, pPredicate, pObject) );
+    if (!pStatement) {
+        throw uno::RuntimeException(
+            "librdf_TypeConverter::mkStatement: "
+            "librdf_new_statement_from_nodes failed", nullptr);
+    }
+    return pStatement;
+}
+
+uno::Reference<rdf::XURI>
+librdf_TypeConverter::convertToXURI(librdf_uri* i_pURI) const
+{
+    if (!i_pURI) return nullptr;
+    const unsigned char* uri( librdf_uri_as_string(i_pURI) );
+    if (!uri) {
+        throw uno::RuntimeException(
+            "librdf_TypeConverter::convertToXURI: "
+            "librdf_uri_as_string failed", m_rRep);
+    }
+    OUString uriU( OStringToOUString(
+        std::string_view(reinterpret_cast<const char*>(uri)),
+        RTL_TEXTENCODING_UTF8) );
+    try {
+        return rdf::URI::create(m_xContext, uriU);
+    } catch (const lang::IllegalArgumentException &) {
+        css::uno::Any anyEx = cppu::getCaughtException();
+        throw lang::WrappedTargetRuntimeException(
+                "librdf_TypeConverter::convertToXURI: "
+                "illegal uri", m_rRep, anyEx);
+    }
+}
+
+uno::Reference<rdf::XURI>
+librdf_TypeConverter::convertToXURI(librdf_node* i_pNode) const
+{
+    if (!i_pNode) return nullptr;
+    if (librdf_node_is_resource(i_pNode)) {
+        librdf_uri* pURI( librdf_node_get_uri(i_pNode) );
+        if (!pURI) {
+            throw uno::RuntimeException(
+                "librdf_TypeConverter::convertToXURI: "
+                "resource has no uri", m_rRep);
+        }
+        return convertToXURI(pURI);
+    } else {
+        OSL_FAIL("convertToXURI: unknown librdf_node");
+        return nullptr;
+    }
+}
+
+uno::Reference<rdf::XResource>
+librdf_TypeConverter::convertToXResource(librdf_node* i_pNode) const
+{
+    if (!i_pNode) return nullptr;
+    if (librdf_node_is_blank(i_pNode)) {
+        const unsigned char* label( librdf_node_get_blank_identifier(i_pNode) );
+        if (!label) {
+            throw uno::RuntimeException(
+                "librdf_TypeConverter::convertToXResource: "
+                "blank node has no label", m_rRep);
+        }
+        OUString labelU( OStringToOUString(
+            std::string_view(reinterpret_cast<const char*>(label)),
+            RTL_TEXTENCODING_UTF8) );
+        try {
+            return rdf::BlankNode::create(m_xContext, labelU);
+        } catch (const lang::IllegalArgumentException &) {
+            css::uno::Any anyEx = cppu::getCaughtException();
+            throw lang::WrappedTargetRuntimeException(
+                    "librdf_TypeConverter::convertToXResource: "
+                    "illegal blank node label", m_rRep, anyEx);
+        }
+    } else {
+        return convertToXURI(i_pNode);
+    }
+}
+
+uno::Reference<rdf::XNode>
+librdf_TypeConverter::convertToXNode(librdf_node* i_pNode) const
+{
+    if (!i_pNode) return nullptr;
+    if (!librdf_node_is_literal(i_pNode)) {
+        return convertToXResource(i_pNode);
+    }
+    const unsigned char* value( librdf_node_get_literal_value(i_pNode) );
+    if (!value) {
+        throw uno::RuntimeException(
+            "librdf_TypeConverter::convertToXNode: "
+            "literal has no value", m_rRep);
+    }
+    const char * lang( librdf_node_get_literal_value_language(i_pNode) );
+    librdf_uri* pType(
+        librdf_node_get_literal_value_datatype_uri(i_pNode) );
+    OSL_ENSURE(!lang || !pType, "convertToXNode: invalid literal");
+    const OUString valueU( OStringToOUString(
+        std::string_view(reinterpret_cast<const char*>(value)),
+        RTL_TEXTENCODING_UTF8) );
+    if (lang) {
+        const OUString langU( OStringToOUString(
+            std::string_view(lang),
+            RTL_TEXTENCODING_UTF8) );
+        return rdf::Literal::createWithLanguage(m_xContext, valueU, langU);
+    } else if (pType) {
+        uno::Reference<rdf::XURI> xType(convertToXURI(pType));
+        OSL_ENSURE(xType.is(), "convertToXNode: null uri");
+        return rdf::Literal::createWithType(m_xContext, valueU, xType);
+    } else {
+        return rdf::Literal::create(m_xContext, valueU);
+    }
+}
+
+rdf::Statement
+librdf_TypeConverter::convertToStatement(librdf_statement* i_pStmt,
+    librdf_node* i_pContext) const
+{
+    if (!i_pStmt) {
+        throw uno::RuntimeException();
+    }
+    return rdf::Statement(
+        convertToXResource(librdf_statement_get_subject(i_pStmt)),
+        convertToXURI(librdf_statement_get_predicate(i_pStmt)),
+        convertToXNode(librdf_statement_get_object(i_pStmt)),
+        convertToXURI(i_pContext));
+}
+
+} // closing anonymous implementation namespace
+
+
+extern "C" SAL_DLLPUBLIC_EXPORT css::uno::XInterface*
+unoxml_rdfRepository_get_implementation(
+    css::uno::XComponentContext* context , css::uno::Sequence<css::uno::Any> const&)
+{
+    return cppu::acquire(new librdf_Repository(context));
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/unoxml/source/rdf/unordf.component b/unoxml/source/rdf/unordf.component
new file mode 100644
index 0000000000..1b99b5786c
--- /dev/null
+++ b/unoxml/source/rdf/unordf.component
@@ -0,0 +1,35 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ -->
+
+<component loader="com.sun.star.loader.SharedLibrary" environment="@CPPU_ENV@"
+    xmlns="http://openoffice.org/2010/uno-components">
+  <implementation name="CBlankNode" constructor="unoxml_CBlankNode_get_implementation">
+    <service name="com.sun.star.rdf.BlankNode"/>
+  </implementation>
+  <implementation name="CLiteral" constructor="unoxml_CLiteral_get_implementation">
+    <service name="com.sun.star.rdf.Literal"/>
+  </implementation>
+  <implementation name="CURI" constructor="unoxml_CURI_get_implementation">
+    <service name="com.sun.star.rdf.URI"/>
+  </implementation>
+  <implementation name="librdf_Repository"
+    constructor="unoxml_rdfRepository_get_implementation">
+    <service name="com.sun.star.rdf.Repository"/>
+  </implementation>
+</component>
diff --git a/unoxml/source/service/unoxml.component b/unoxml/source/service/unoxml.component
new file mode 100644
index 0000000000..6591bde6a7
--- /dev/null
+++ b/unoxml/source/service/unoxml.component
@@ -0,0 +1,34 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ -->
+
+<component loader="com.sun.star.loader.SharedLibrary" environment="@CPPU_ENV@"
+    xmlns="http://openoffice.org/2010/uno-components">
+  <implementation name="com.sun.star.comp.xml.dom.DocumentBuilder"
+    constructor="unoxml_CDocumentBuilder_get_implementation">
+    <service name="com.sun.star.xml.dom.DocumentBuilder"/>
+  </implementation>
+  <implementation name="com.sun.star.comp.xml.dom.SAXDocumentBuilder"
+    constructor="unoxml_CSAXDocumentBuilder_get_implementation">
+    <service name="com.sun.star.xml.dom.SAXDocumentBuilder"/>
+  </implementation>
+  <implementation name="com.sun.star.comp.xml.xpath.XPathAPI"
+    constructor="unoxml_CXPathAPI_get_implementation">
+    <service name="com.sun.star.xml.xpath.XPathAPI"/>
+  </implementation>
+</component>
diff --git a/unoxml/source/xpath/nodelist.cxx b/unoxml/source/xpath/nodelist.cxx
new file mode 100644
index 0000000000..b9e4e70c44
--- /dev/null
+++ b/unoxml/source/xpath/nodelist.cxx
@@ -0,0 +1,74 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <utility>
+
+#include "nodelist.hxx"
+
+#include "../dom/document.hxx"
+
+using namespace css::uno;
+using namespace css::xml::dom;
+
+namespace XPath
+{
+    CNodeList::CNodeList(
+                ::rtl::Reference<DOM::CDocument> pDocument,
+                ::osl::Mutex & rMutex,
+                std::shared_ptr<xmlXPathObject> const& rxpathObj)
+        : m_pDocument(std::move(pDocument))
+        , m_rMutex(rMutex)
+        , m_pNodeSet(nullptr)
+    {
+        if (rxpathObj != nullptr && rxpathObj->type == XPATH_NODESET)
+        {
+            m_pNodeSet = rxpathObj->nodesetval;
+            m_pXPathObj = rxpathObj;
+        }
+    }
+
+    /**
+    The number of nodes in the list.
+    */
+    sal_Int32 SAL_CALL CNodeList::getLength()
+    {
+        ::osl::MutexGuard const g(m_rMutex);
+
+        sal_Int32 value = 0;
+        if (m_pNodeSet != nullptr)
+            value = xmlXPathNodeSetGetLength(m_pNodeSet);
+        return value;
+    }
+
+    /**
+    Returns the indexth item in the collection.
+    */
+    Reference< XNode > SAL_CALL CNodeList::item(sal_Int32 index)
+    {
+        ::osl::MutexGuard const g(m_rMutex);
+
+        if (nullptr == m_pNodeSet) {
+            return nullptr;
+        }
+        xmlNodePtr const pNode = xmlXPathNodeSetItem(m_pNodeSet, index);
+        return m_pDocument->GetCNode(pNode);
+    }
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/unoxml/source/xpath/nodelist.hxx b/unoxml/source/xpath/nodelist.hxx
new file mode 100644
index 0000000000..2a8f70a6d8
--- /dev/null
+++ b/unoxml/source/xpath/nodelist.hxx
@@ -0,0 +1,70 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#pragma once
+
+#include <sal/types.h>
+#include <rtl/ref.hxx>
+
+#include <cppuhelper/implbase.hxx>
+
+#include <com/sun/star/uno/Reference.h>
+#include <com/sun/star/xml/dom/XNode.hpp>
+#include <com/sun/star/xml/dom/XNodeList.hpp>
+
+#include <libxml/xpath.h>
+
+#include "../dom/document.hxx"
+
+#include <memory>
+
+namespace DOM {
+    class CDocument;
+}
+
+namespace XPath
+{
+
+    class CNodeList : public cppu::WeakImplHelper< css::xml::dom::XNodeList >
+    {
+    private:
+        /// #i115995# keep document alive
+        ::rtl::Reference< DOM::CDocument > const m_pDocument;
+        ::osl::Mutex & m_rMutex;
+        /// retain the result set in case the CXPathObject is released
+        std::shared_ptr<xmlXPathObject> m_pXPathObj;
+        xmlNodeSetPtr m_pNodeSet;
+
+    public:
+        CNodeList(
+                ::rtl::Reference<DOM::CDocument> pDocument,
+                ::osl::Mutex & rMutex,
+                std::shared_ptr<xmlXPathObject> const& rxpathObj);
+        /**
+        The number of nodes in the list.
+        */
+        virtual sal_Int32 SAL_CALL getLength() override;
+        /**
+        Returns the indexth item in the collection.
+        */
+        virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL item(sal_Int32 index) override;
+    };
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/unoxml/source/xpath/xpathapi.cxx b/unoxml/source/xpath/xpathapi.cxx
new file mode 100644
index 0000000000..c2b7537831
--- /dev/null
+++ b/unoxml/source/xpath/xpathapi.cxx
@@ -0,0 +1,398 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include "xpathapi.hxx"
+
+#include <stdarg.h>
+#include <string.h>
+
+#include <libxml/tree.h>
+#include <libxml/xmlerror.h>
+#include <libxml/xpath.h>
+#include <libxml/xpathInternals.h>
+#include <libxml/xmlIO.h>
+
+#include <com/sun/star/xml/xpath/XPathException.hpp>
+
+#include <rtl/ustrbuf.hxx>
+#include <sal/log.hxx>
+
+#include "xpathobject.hxx"
+
+#include <node.hxx>
+#include "../dom/document.hxx"
+
+#include <comphelper/servicehelper.hxx>
+#include <cppuhelper/supportsservice.hxx>
+
+using namespace css::io;
+using namespace css::uno;
+using namespace css::xml::dom;
+using namespace css::xml::xpath;
+
+namespace XPath
+{
+    // ctor
+    CXPathAPI::CXPathAPI(const Reference< XComponentContext >& rxContext)
+        : m_xContext(rxContext)
+    {
+    }
+
+    Sequence< OUString > SAL_CALL CXPathAPI::getSupportedServiceNames()
+    {
+        return { "com.sun.star.xml.xpath.XPathAPI" };
+    }
+
+    OUString SAL_CALL CXPathAPI::getImplementationName()
+    {
+        return "com.sun.star.comp.xml.xpath.XPathAPI";
+    }
+
+    sal_Bool SAL_CALL CXPathAPI::supportsService(const OUString& aServiceName)
+    {
+        return cppu::supportsService(this, aServiceName);
+    }
+
+    void SAL_CALL CXPathAPI::registerNS(
+            const OUString& aPrefix,
+            const OUString& aURI)
+    {
+        std::scoped_lock const g(m_Mutex);
+
+        m_nsmap.emplace(aPrefix, aURI);
+    }
+
+    void SAL_CALL CXPathAPI::unregisterNS(
+            const OUString& aPrefix,
+            const OUString& aURI)
+    {
+        std::scoped_lock const g(m_Mutex);
+
+        if ((m_nsmap.find(aPrefix))->second == aURI) {
+            m_nsmap.erase(aPrefix);
+        }
+    }
+
+    // register all namespaces stored in the namespace list for this object
+    // with the current xpath evaluation context
+    static void lcl_registerNamespaces(
+            xmlXPathContextPtr ctx,
+            const nsmap_t& nsmap)
+    {
+        OString oprefix, ouri;
+        for (const auto& rEntry : nsmap)
+        {
+            oprefix = OUStringToOString(rEntry.first,  RTL_TEXTENCODING_UTF8);
+            ouri    = OUStringToOString(rEntry.second, RTL_TEXTENCODING_UTF8);
+            xmlChar const *p = reinterpret_cast<xmlChar const *>(oprefix.getStr());
+            xmlChar const *u = reinterpret_cast<xmlChar const *>(ouri.getStr());
+            (void)xmlXPathRegisterNs(ctx, p, u);
+        }
+    }
+
+    // get all ns decls on a node (and parent nodes, if any)
+    static void lcl_collectNamespaces(
+            nsmap_t & rNamespaces, Reference< XNode > const& xNamespaceNode)
+    {
+        DOM::CNode *const pCNode(dynamic_cast<DOM::CNode*>(xNamespaceNode.get()));
+        if (!pCNode) { throw RuntimeException("Could not use the namespace node in order to collect namespace declarations."); }
+
+        ::osl::MutexGuard const g(pCNode->GetOwnerDocument().GetMutex());
+
+        xmlNodePtr pNode = pCNode->GetNodePtr();
+        while (pNode != nullptr) {
+            xmlNsPtr curDef = pNode->nsDef;
+            while (curDef != nullptr) {
+                const xmlChar* pHref = curDef->href;
+                OUString aURI(reinterpret_cast<char const *>(pHref), strlen(reinterpret_cast<char const *>(pHref)), RTL_TEXTENCODING_UTF8);
+                const xmlChar* pPre = curDef->prefix;
+                OUString aPrefix(reinterpret_cast<char const *>(pPre), strlen(reinterpret_cast<char const *>(pPre)), RTL_TEXTENCODING_UTF8);
+                // we could already have this prefix from a child node
+                rNamespaces.emplace(aPrefix, aURI);
+                curDef = curDef->next;
+            }
+            pNode = pNode->parent;
+        }
+    }
+
+    static void lcl_collectRegisterNamespaces(
+            CXPathAPI & rAPI, Reference< XNode > const& xNamespaceNode)
+    {
+        nsmap_t namespaces;
+        lcl_collectNamespaces(namespaces, xNamespaceNode);
+        for (const auto& rEntry : namespaces)
+        {
+            rAPI.registerNS(rEntry.first, rEntry.second);
+        }
+    }
+
+    // register function and variable lookup functions with the current
+    // xpath evaluation context
+    static void lcl_registerExtensions(
+            xmlXPathContextPtr ctx,
+            const extensions_t& extensions)
+    {
+        for (const auto& rExtensionRef : extensions)
+        {
+            Libxml2ExtensionHandle aHandle = rExtensionRef->getLibxml2ExtensionHandle();
+            if ( aHandle.functionLookupFunction != 0 )
+            {
+                xmlXPathRegisterFuncLookup(ctx,
+                    reinterpret_cast<xmlXPathFuncLookupFunc>(
+                        sal::static_int_cast<sal_IntPtr>(aHandle.functionLookupFunction)),
+                    reinterpret_cast<void*>(
+                        sal::static_int_cast<sal_IntPtr>(aHandle.functionData)));
+            }
+            if ( aHandle.variableLookupFunction != 0 )
+            {
+                xmlXPathRegisterVariableLookup(ctx,
+                    reinterpret_cast<xmlXPathVariableLookupFunc>(
+                        sal::static_int_cast<sal_IntPtr>(aHandle.variableLookupFunction)),
+                    reinterpret_cast<void*>(
+                        sal::static_int_cast<sal_IntPtr>(aHandle.variableData)));
+            }
+        }
+    }
+
+    /**
+     * Use an XPath string to select a nodelist.
+     */
+    Reference< XNodeList > SAL_CALL CXPathAPI::selectNodeList(
+            const Reference< XNode >& contextNode,
+            const OUString& expr)
+    {
+        Reference< XXPathObject > xobj = eval(contextNode, expr);
+        return xobj->getNodeList();
+    }
+
+    /**
+     * same as selectNodeList but registers all name space declarations found on namespaceNode
+     */
+    Reference< XNodeList > SAL_CALL CXPathAPI::selectNodeListNS(
+            const Reference< XNode >&  contextNode,
+            const OUString& expr,
+            const Reference< XNode >&  namespaceNode)
+    {
+        lcl_collectRegisterNamespaces(*this, namespaceNode);
+        return selectNodeList(contextNode, expr);
+    }
+
+    /**
+     * Same as selectNodeList but returns the first node (if any)
+     */
+    Reference< XNode > SAL_CALL CXPathAPI::selectSingleNode(
+            const Reference< XNode >& contextNode,
+            const OUString& expr)
+    {
+        Reference< XNodeList > aList = selectNodeList(contextNode, expr);
+        Reference< XNode > aNode = aList->item(0);
+        return aNode;
+    }
+
+    /**
+     * Same as selectSingleNode but registers all namespaces declared on
+     * namespaceNode
+     */
+    Reference< XNode > SAL_CALL CXPathAPI::selectSingleNodeNS(
+            const Reference< XNode >& contextNode,
+            const OUString& expr,
+            const Reference< XNode >&  namespaceNode )
+    {
+        lcl_collectRegisterNamespaces(*this, namespaceNode);
+        return selectSingleNode(contextNode, expr);
+    }
+
+    static OUString make_error_message(const xmlError* pError)
+    {
+        OUStringBuffer buf;
+        if (pError) {
+            if (pError->message) {
+                buf.appendAscii(pError->message);
+            }
+            int line = pError->line;
+            if (line) {
+                buf.append("Line: " + OUString::number(static_cast<sal_Int32>(line)) + "\n");
+            }
+            int column = pError->int2;
+            if (column) {
+                buf.append("Column: " + OUString::number(static_cast<sal_Int32>(column)) + "\n");
+            }
+        } else {
+            buf.append("no error argument!");
+        }
+        OUString msg = buf.makeStringAndClear();
+        return msg;
+    }
+
+    extern "C" {
+
+#if defined __GNUC__
+        __attribute__ ((format (printf, 2, 3)))
+#endif
+        static void generic_error_func(void *, const char *format, ...)
+        {
+            char str[1000];
+            va_list args;
+
+            va_start(args, format);
+#ifdef _WIN32
+#define vsnprintf _vsnprintf
+#endif
+            vsnprintf(str, sizeof(str), format, args);
+            va_end(args);
+
+            SAL_WARN("unoxml", "libxml2 error: " << str);
+        }
+
+#if LIBXML_VERSION >= 21200
+        static void structured_error_func(void *, const xmlError* error)
+#else
+        static void structured_error_func(void *, xmlErrorPtr error)
+#endif
+        {
+            SAL_WARN("unoxml", "libxml2 error: " << make_error_message(error));
+        }
+
+    } // extern "C"
+
+    /**
+     * evaluates an XPath string. relative XPath expressions are evaluated relative to
+     * the context Node
+     */
+    Reference< XXPathObject > SAL_CALL CXPathAPI::eval(
+            Reference< XNode > const& xContextNode,
+            const OUString& expr)
+    {
+        if (!xContextNode.is()) { throw RuntimeException("xContextNode does not exist!"); }
+
+        nsmap_t nsmap;
+        extensions_t extensions;
+
+        {
+            std::scoped_lock const g(m_Mutex);
+            nsmap = m_nsmap;
+            extensions = m_extensions;
+        }
+
+        // get the node and document
+        ::rtl::Reference<DOM::CDocument> const pCDoc(
+                dynamic_cast<DOM::CDocument*>(xContextNode->getOwnerDocument().get()));
+        if (!pCDoc.is()) { throw RuntimeException("Interface pointer for the owner document of the xContextNode does not exist."); }
+
+        DOM::CNode *const pCNode = dynamic_cast<DOM::CNode*>(xContextNode.get());
+        if (!pCNode) { throw RuntimeException("xContextNode interface pointer does not exist."); }
+
+        ::osl::MutexGuard const g(pCDoc->GetMutex()); // lock the document!
+
+        xmlNodePtr const pNode = pCNode->GetNodePtr();
+        if (!pNode) { throw RuntimeException("Node pointer for xContextNode does not exist."); }
+        xmlDocPtr pDoc = pNode->doc;
+
+        /* NB: workaround for #i87252#:
+           libxml < 2.6.17 considers it an error if the context
+           node is the empty document (i.e. its xpathCtx->doc has no
+           children). libxml 2.6.17 does not consider it an error.
+           Unfortunately, old libxml prints an error message to stderr,
+           which (afaik) cannot be turned off in this case, so we handle it.
+        */
+        if (!pDoc->children) {
+            throw XPathException();
+        }
+
+        /* Create xpath evaluation context */
+        std::shared_ptr<xmlXPathContext> const xpathCtx(
+                xmlXPathNewContext(pDoc), xmlXPathFreeContext);
+        if (xpathCtx == nullptr) { throw XPathException(); }
+
+        // set context node
+        xpathCtx->node = pNode;
+        // error handling
+        xpathCtx->error = structured_error_func;
+        xmlSetGenericErrorFunc(nullptr, generic_error_func);
+
+        // register namespaces and extension
+        lcl_registerNamespaces(xpathCtx.get(), nsmap);
+        lcl_registerExtensions(xpathCtx.get(), extensions);
+
+        /* run the query */
+        OString o1 = OUStringToOString(expr, RTL_TEXTENCODING_UTF8);
+        xmlChar const *pStr = reinterpret_cast<xmlChar const *>(o1.getStr());
+        std::shared_ptr<xmlXPathObject> const xpathObj(
+                xmlXPathEval(pStr, xpathCtx.get()), xmlXPathFreeObject);
+        xmlSetGenericErrorFunc(nullptr, nullptr);
+        if (nullptr == xpathObj) {
+            // OSL_ENSURE(xpathCtx->lastError == NULL, xpathCtx->lastError->message);
+            throw XPathException();
+        }
+        Reference<XXPathObject> const xObj(
+                new CXPathObject(pCDoc, pCDoc->GetMutex(), xpathObj));
+        return xObj;
+    }
+
+    /**
+     * same as eval but registers all namespace declarations found on namespaceNode
+     */
+    Reference< XXPathObject > SAL_CALL CXPathAPI::evalNS(
+            const Reference< XNode >& contextNode,
+            const OUString& expr,
+            const Reference< XNode >& namespaceNode)
+    {
+        lcl_collectRegisterNamespaces(*this, namespaceNode);
+        return eval(contextNode, expr);
+    }
+
+    /**
+     * uses the service manager to create an instance of the service denoted by aName.
+     * If the returned object implements the XXPathExtension interface, it is added to the list
+     * of extensions that are used when evaluating XPath strings with this XPathAPI instance
+     */
+    void SAL_CALL CXPathAPI::registerExtension(
+            const OUString& aName)
+    {
+        std::scoped_lock const g(m_Mutex);
+
+        // get extension from service manager
+        Reference< XXPathExtension > const xExtension(
+                m_xContext->getServiceManager()->createInstanceWithContext(aName, m_xContext), UNO_QUERY_THROW);
+        m_extensions.push_back(xExtension);
+    }
+
+    /**
+     * registers the given extension instance to be used by XPath evaluations performed through this
+     * XPathAPI instance
+     */
+    void SAL_CALL CXPathAPI::registerExtensionInstance(
+            Reference< XXPathExtension> const& xExtension)
+    {
+        if (!xExtension.is()) {
+            throw RuntimeException("Extension instance xExtension to be used by XPath does not exist.");
+        }
+        std::scoped_lock const g(m_Mutex);
+        m_extensions.push_back( xExtension );
+    }
+}
+
+extern "C" SAL_DLLPUBLIC_EXPORT css::uno::XInterface*
+unoxml_CXPathAPI_get_implementation(
+    css::uno::XComponentContext* context , css::uno::Sequence<css::uno::Any> const&)
+{
+    return cppu::acquire(new XPath::CXPathAPI(context));
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/unoxml/source/xpath/xpathapi.hxx b/unoxml/source/xpath/xpathapi.hxx
new file mode 100644
index 0000000000..bb37922c8b
--- /dev/null
+++ b/unoxml/source/xpath/xpathapi.hxx
@@ -0,0 +1,107 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#pragma once
+
+#include <map>
+#include <mutex>
+#include <vector>
+
+#include <sal/types.h>
+
+#include <cppuhelper/implbase.hxx>
+
+#include <com/sun/star/uno/Reference.h>
+#include <com/sun/star/uno/Sequence.h>
+
+#include <com/sun/star/xml/xpath/XXPathAPI.hpp>
+#include <com/sun/star/xml/dom/XNode.hpp>
+#include <com/sun/star/xml/dom/XNodeList.hpp>
+#include <com/sun/star/xml/xpath/XXPathObject.hpp>
+#include <com/sun/star/xml/xpath/XXPathExtension.hpp>
+#include <com/sun/star/lang/XServiceInfo.hpp>
+#include <com/sun/star/uno/XComponentContext.hpp>
+
+namespace XPath
+{
+    typedef std::map<OUString, OUString> nsmap_t;
+    typedef std::vector< css::uno::Reference<css::xml::xpath::XXPathExtension> > extensions_t;
+
+    typedef ::cppu::WeakImplHelper
+        <   css::xml::xpath::XXPathAPI
+        ,   css::lang::XServiceInfo
+        > CXPathAPI_Base;
+
+    class  CXPathAPI
+        : public CXPathAPI_Base
+    {
+
+    private:
+        std::mutex m_Mutex;
+        nsmap_t m_nsmap;
+        const css::uno::Reference< css::uno::XComponentContext > m_xContext;
+        extensions_t m_extensions;
+
+    public:
+        // ctor
+        explicit CXPathAPI( const css::uno::Reference< css::uno::XComponentContext >& );
+
+        // XServiceInfo
+        virtual OUString SAL_CALL getImplementationName() override;
+        virtual sal_Bool SAL_CALL supportsService(const OUString& ServiceName) override;
+        virtual css::uno::Sequence< OUString > SAL_CALL getSupportedServiceNames () override;
+
+
+        // --- XXPathAPI ---
+
+        virtual void SAL_CALL registerNS(const OUString& aPrefix, const OUString& aURI) override;
+
+        virtual void SAL_CALL unregisterNS(const OUString& aPrefix, const OUString& aURI) override;
+
+        /**
+        Use an XPath string to select a nodelist.
+        */
+        virtual css::uno::Reference< css::xml::dom::XNodeList > SAL_CALL selectNodeList(const css::uno::Reference< css::xml::dom::XNode >& contextNode, const OUString& str) override;
+
+        /**
+        Use an XPath string to select a nodelist.
+        */
+        virtual css::uno::Reference< css::xml::dom::XNodeList > SAL_CALL selectNodeListNS(const css::uno::Reference< css::xml::dom::XNode >& contextNode, const OUString& str, const css::uno::Reference< css::xml::dom::XNode >&  namespaceNode) override;
+
+        /**
+        Use an XPath string to select a single node.
+        */
+        virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL selectSingleNode(const css::uno::Reference< css::xml::dom::XNode >& contextNode, const OUString& str) override;
+
+        /**
+        Use an XPath string to select a single node.
+        */
+        virtual css::uno::Reference< css::xml::dom::XNode > SAL_CALL selectSingleNodeNS(const css::uno::Reference< css::xml::dom::XNode >& contextNode, const OUString& str, const css::uno::Reference< css::xml::dom::XNode >&  namespaceNode) override;
+
+        virtual css::uno::Reference< css::xml::xpath::XXPathObject > SAL_CALL eval(const css::uno::Reference< css::xml::dom::XNode >& contextNode, const OUString& str) override;
+
+        virtual css::uno::Reference< css::xml::xpath::XXPathObject > SAL_CALL evalNS(const css::uno::Reference< css::xml::dom::XNode >& contextNode, const OUString& str, const css::uno::Reference< css::xml::dom::XNode >&  namespaceNode) override;
+
+        virtual void SAL_CALL registerExtension(const OUString& aName) override;
+        virtual void SAL_CALL registerExtensionInstance(const css::uno::Reference< css::xml::xpath::XXPathExtension>& aExtension) override;
+
+    };
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/unoxml/source/xpath/xpathobject.cxx b/unoxml/source/xpath/xpathobject.cxx
new file mode 100644
index 0000000000..c33e6a330f
--- /dev/null
+++ b/unoxml/source/xpath/xpathobject.cxx
@@ -0,0 +1,183 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include "xpathobject.hxx"
+
+#include <string.h>
+
+#include <utility>
+
+#include "../dom/document.hxx"
+#include "nodelist.hxx"
+
+using namespace css::uno;
+using namespace css::xml::dom;
+using namespace css::xml::xpath;
+
+namespace XPath
+{
+    static XPathObjectType lcl_GetType(xmlXPathObjectPtr const pXPathObj)
+    {
+        switch (pXPathObj->type)
+        {
+            case XPATH_UNDEFINED:
+                return XPathObjectType_XPATH_UNDEFINED;
+            case XPATH_NODESET:
+                return XPathObjectType_XPATH_NODESET;
+            case XPATH_BOOLEAN:
+                return XPathObjectType_XPATH_BOOLEAN;
+            case XPATH_NUMBER:
+                return XPathObjectType_XPATH_NUMBER;
+            case XPATH_STRING:
+                return XPathObjectType_XPATH_STRING;
+#if LIBXML_VERSION < 21000 || defined(LIBXML_XPTR_LOCS_ENABLED)
+            case XPATH_POINT:
+                return XPathObjectType_XPATH_POINT;
+            case XPATH_RANGE:
+                return XPathObjectType_XPATH_RANGE;
+            case XPATH_LOCATIONSET:
+                return XPathObjectType_XPATH_LOCATIONSET;
+#endif
+            case XPATH_USERS:
+                return XPathObjectType_XPATH_USERS;
+            case XPATH_XSLT_TREE:
+                return XPathObjectType_XPATH_XSLT_TREE;
+            default:
+                return XPathObjectType_XPATH_UNDEFINED;
+        }
+    }
+
+    CXPathObject::CXPathObject(
+            ::rtl::Reference<DOM::CDocument> pDocument,
+            ::osl::Mutex & rMutex,
+            std::shared_ptr<xmlXPathObject> const& pXPathObj)
+        : m_pDocument(std::move(pDocument))
+        , m_rMutex(rMutex)
+        , m_pXPathObj(pXPathObj)
+        , m_XPathObjectType(lcl_GetType(pXPathObj.get()))
+    {
+    }
+
+    /**
+        get object type
+    */
+    XPathObjectType CXPathObject::getObjectType()
+    {
+        return m_XPathObjectType;
+    }
+
+    /**
+        get the nodes from a nodelist type object
+    */
+    Reference< XNodeList > SAL_CALL
+    CXPathObject::getNodeList()
+    {
+        ::osl::MutexGuard const g(m_rMutex);
+
+        Reference< XNodeList > const xRet(
+            new CNodeList(m_pDocument, m_rMutex, m_pXPathObj));
+        return xRet;
+    }
+
+     /**
+        get value of a boolean object
+     */
+    sal_Bool SAL_CALL CXPathObject::getBoolean()
+    {
+        ::osl::MutexGuard const g(m_rMutex);
+
+        return xmlXPathCastToBoolean(m_pXPathObj.get()) != 0;
+    }
+
+    /**
+        get number as byte
+    */
+    sal_Int8 SAL_CALL CXPathObject::getByte()
+    {
+        ::osl::MutexGuard const g(m_rMutex);
+
+        return static_cast<sal_Int8>(xmlXPathCastToNumber(m_pXPathObj.get()));
+    }
+
+    /**
+        get number as short
+    */
+    sal_Int16 SAL_CALL CXPathObject::getShort()
+    {
+        ::osl::MutexGuard const g(m_rMutex);
+
+        return static_cast<sal_Int16>(xmlXPathCastToNumber(m_pXPathObj.get()));
+    }
+
+    /**
+        get number as long
+    */
+    sal_Int32 SAL_CALL CXPathObject::getLong()
+    {
+        ::osl::MutexGuard const g(m_rMutex);
+
+        return static_cast<sal_Int32>(xmlXPathCastToNumber(m_pXPathObj.get()));
+    }
+
+    /**
+        get number as hyper
+    */
+    sal_Int64 SAL_CALL CXPathObject::getHyper()
+    {
+        ::osl::MutexGuard const g(m_rMutex);
+
+        return static_cast<sal_Int64>(xmlXPathCastToNumber(m_pXPathObj.get()));
+    }
+
+    /**
+        get number as float
+    */
+    float SAL_CALL CXPathObject::getFloat()
+    {
+        ::osl::MutexGuard const g(m_rMutex);
+
+        return static_cast<float>(xmlXPathCastToNumber(m_pXPathObj.get()));
+    }
+
+    /**
+        get number as double
+    */
+    double SAL_CALL CXPathObject::getDouble()
+    {
+        ::osl::MutexGuard const g(m_rMutex);
+
+        return  xmlXPathCastToNumber(m_pXPathObj.get());
+    }
+
+    /**
+        get string value
+    */
+    OUString SAL_CALL CXPathObject::getString()
+    {
+        ::osl::MutexGuard const g(m_rMutex);
+
+        std::shared_ptr<xmlChar const> str(
+            xmlXPathCastToString(m_pXPathObj.get()), xmlFree);
+        char const*const pS(reinterpret_cast<char const*>(str.get()));
+        return OUString(pS, strlen(pS), RTL_TEXTENCODING_UTF8);
+    }
+
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/unoxml/source/xpath/xpathobject.hxx b/unoxml/source/xpath/xpathobject.hxx
new file mode 100644
index 0000000000..76cb5459cf
--- /dev/null
+++ b/unoxml/source/xpath/xpathobject.hxx
@@ -0,0 +1,109 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#pragma once
+
+#include <memory>
+
+#include <libxml/xpath.h>
+
+#include <sal/types.h>
+#include <rtl/ref.hxx>
+
+#include <cppuhelper/implbase.hxx>
+
+#include <com/sun/star/uno/Reference.h>
+#include <com/sun/star/xml/dom/XNodeList.hpp>
+#include <com/sun/star/xml/xpath/XXPathObject.hpp>
+
+#include "../dom/document.hxx"
+
+namespace DOM {
+    class CDocument;
+}
+
+namespace XPath
+{
+    class CXPathObject : public cppu::WeakImplHelper< css::xml::xpath::XXPathObject >
+    {
+    private:
+        ::rtl::Reference< DOM::CDocument > const m_pDocument;
+        ::osl::Mutex & m_rMutex;
+        std::shared_ptr<xmlXPathObject> const m_pXPathObj;
+        css::xml::xpath::XPathObjectType const m_XPathObjectType;
+
+    public:
+        CXPathObject( ::rtl::Reference<DOM::CDocument> pDocument,
+            ::osl::Mutex & rMutex,
+            std::shared_ptr<xmlXPathObject> const& pXPathObj);
+
+    /**
+        get object type
+    */
+    virtual css::xml::xpath::XPathObjectType SAL_CALL getObjectType() override;
+
+    /**
+        get the nodes from a nodelist type object
+    */
+    virtual css::uno::Reference< css::xml::dom::XNodeList > SAL_CALL getNodeList() override;
+
+     /**
+        get value of a boolean object
+     */
+     virtual sal_Bool SAL_CALL getBoolean() override;
+
+    /**
+        get number as byte
+    */
+    virtual sal_Int8 SAL_CALL getByte() override;
+
+    /**
+        get number as short
+    */
+    virtual sal_Int16 SAL_CALL getShort() override;
+
+    /**
+        get number as long
+    */
+    virtual sal_Int32 SAL_CALL getLong() override;
+
+    /**
+        get number as hyper
+    */
+    virtual sal_Int64 SAL_CALL getHyper() override;
+
+    /**
+        get number as float
+    */
+    virtual float SAL_CALL getFloat() override;
+
+    /**
+        get number as double
+    */
+    virtual double SAL_CALL getDouble() override;
+
+    /**
+        get string value
+    */
+    virtual OUString SAL_CALL getString() override;
+
+    };
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */