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diff --git a/unoxml/source/xpath/xpathapi.hxx b/unoxml/source/xpath/xpathapi.hxx
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+++ b/unoxml/source/xpath/xpathapi.hxx
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+/* -*- 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 .
+ */
+
+#ifndef INCLUDED_UNOXML_SOURCE_XPATH_XPATHAPI_HXX
+#define INCLUDED_UNOXML_SOURCE_XPATH_XPATHAPI_HXX
+
+#include <map>
+#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/uno/XInterface.hpp>
+#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/lang/XMultiServiceFactory.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:
+        ::osl::Mutex m_Mutex;
+        nsmap_t m_nsmap;
+        const css::uno::Reference< css::lang::XMultiServiceFactory > m_aFactory;
+        extensions_t m_extensions;
+
+    public:
+        // ctor
+        explicit CXPathAPI(
+            const css::uno::Reference< css::lang::XMultiServiceFactory >&
+                rSMgr);
+
+        // static helpers for service info and component management
+        static OUString _getImplementationName();
+        static css::uno::Sequence< OUString > _getSupportedServiceNames();
+        static css::uno::Reference< XInterface > _getInstance(
+            const css::uno::Reference< css::lang::XMultiServiceFactory >&
+                rSMgr);
+
+        // 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;
+
+    };
+}
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */