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diff --git a/ucb/source/ucp/tdoc/tdoc_datasupplier.cxx b/ucb/source/ucp/tdoc/tdoc_datasupplier.cxx
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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 .
+ */
+
+
+/**************************************************************************
+ TODO
+ **************************************************************************
+
+ *************************************************************************/
+
+#include <vector>
+
+#include <com/sun/star/ucb/IllegalIdentifierException.hpp>
+#include <com/sun/star/ucb/ResultSetException.hpp>
+#include <osl/diagnose.h>
+#include <ucbhelper/contentidentifier.hxx>
+
+#include "tdoc_datasupplier.hxx"
+#include "tdoc_content.hxx"
+
+using namespace com::sun::star;
+using namespace tdoc_ucp;
+
+namespace tdoc_ucp
+{
+
+
+// struct ResultListEntry.
+
+namespace {
+
+struct ResultListEntry
+{
+ OUString aURL;
+ uno::Reference< ucb::XContentIdentifier > xId;
+ uno::Reference< ucb::XContent > xContent;
+ uno::Reference< sdbc::XRow > xRow;
+
+ explicit ResultListEntry( const OUString& rURL ) : aURL( rURL ) {}
+};
+
+}
+
+// struct DataSupplier_Impl.
+
+
+struct DataSupplier_Impl
+{
+ osl::Mutex m_aMutex;
+ std::vector< ResultListEntry > m_aResults;
+ rtl::Reference< Content > m_xContent;
+ uno::Reference< uno::XComponentContext > m_xContext;
+ std::unique_ptr<uno::Sequence< OUString > > m_pNamesOfChildren;
+ bool m_bCountFinal;
+ bool m_bThrowException;
+
+ DataSupplier_Impl(
+ const uno::Reference< uno::XComponentContext >& rxContext,
+ const rtl::Reference< Content >& rContent )
+ : m_xContent( rContent ), m_xContext( rxContext ),
+ m_bCountFinal( false ), m_bThrowException( false )
+ {}
+};
+
+
+}
+
+// DataSupplier Implementation.
+ResultSetDataSupplier::ResultSetDataSupplier(
+ const uno::Reference< uno::XComponentContext >& rxContext,
+ const rtl::Reference< Content >& rContent )
+: m_pImpl( new DataSupplier_Impl( rxContext, rContent ) )
+{
+}
+
+// virtual
+ResultSetDataSupplier::~ResultSetDataSupplier()
+{
+}
+
+// virtual
+OUString
+ResultSetDataSupplier::queryContentIdentifierString( sal_uInt32 nIndex )
+{
+ osl::Guard< osl::Mutex > aGuard( m_pImpl->m_aMutex );
+
+ if ( nIndex < m_pImpl->m_aResults.size() )
+ {
+ OUString aId = m_pImpl->m_aResults[ nIndex ].aURL;
+ if ( !aId.isEmpty() )
+ {
+ // Already cached.
+ return aId;
+ }
+ }
+
+ if ( getResult( nIndex ) )
+ {
+ // Note: getResult fills m_pImpl->m_aResults[ nIndex ]->aURL.
+ return m_pImpl->m_aResults[ nIndex ].aURL;
+ }
+ return OUString();
+}
+
+// virtual
+uno::Reference< ucb::XContentIdentifier >
+ResultSetDataSupplier::queryContentIdentifier( sal_uInt32 nIndex )
+{
+ osl::Guard< osl::Mutex > aGuard( m_pImpl->m_aMutex );
+
+ if ( nIndex < m_pImpl->m_aResults.size() )
+ {
+ uno::Reference< ucb::XContentIdentifier > xId
+ = m_pImpl->m_aResults[ nIndex ].xId;
+ if ( xId.is() )
+ {
+ // Already cached.
+ return xId;
+ }
+ }
+
+ OUString aId = queryContentIdentifierString( nIndex );
+ if ( !aId.isEmpty() )
+ {
+ uno::Reference< ucb::XContentIdentifier > xId
+ = new ::ucbhelper::ContentIdentifier( aId );
+ m_pImpl->m_aResults[ nIndex ].xId = xId;
+ return xId;
+ }
+ return uno::Reference< ucb::XContentIdentifier >();
+}
+
+// virtual
+uno::Reference< ucb::XContent >
+ResultSetDataSupplier::queryContent( sal_uInt32 nIndex )
+{
+ osl::Guard< osl::Mutex > aGuard( m_pImpl->m_aMutex );
+
+ if ( nIndex < m_pImpl->m_aResults.size() )
+ {
+ uno::Reference< ucb::XContent > xContent
+ = m_pImpl->m_aResults[ nIndex ].xContent;
+ if ( xContent.is() )
+ {
+ // Already cached.
+ return xContent;
+ }
+ }
+
+ uno::Reference< ucb::XContentIdentifier > xId
+ = queryContentIdentifier( nIndex );
+ if ( xId.is() )
+ {
+ try
+ {
+ uno::Reference< ucb::XContent > xContent
+ = m_pImpl->m_xContent->getProvider()->queryContent( xId );
+ m_pImpl->m_aResults[ nIndex ].xContent = xContent;
+ return xContent;
+
+ }
+ catch ( ucb::IllegalIdentifierException const & )
+ {
+ }
+ }
+ return uno::Reference< ucb::XContent >();
+}
+
+// virtual
+bool ResultSetDataSupplier::getResult( sal_uInt32 nIndex )
+{
+ osl::ClearableGuard< osl::Mutex > aGuard( m_pImpl->m_aMutex );
+
+ if ( m_pImpl->m_aResults.size() > nIndex )
+ {
+ // Result already present.
+ return true;
+ }
+
+ // Result not (yet) present.
+
+ if ( m_pImpl->m_bCountFinal )
+ return false;
+
+ // Try to obtain result...
+
+ sal_uInt32 nOldCount = m_pImpl->m_aResults.size();
+ bool bFound = false;
+
+ if ( queryNamesOfChildren() )
+ {
+ for ( sal_uInt32 n = nOldCount;
+ n < sal::static_int_cast<sal_uInt32>(
+ m_pImpl->m_pNamesOfChildren->getLength());
+ ++n )
+ {
+ const OUString & rName
+ = m_pImpl->m_pNamesOfChildren->getConstArray()[ n ];
+
+ if ( rName.isEmpty() )
+ {
+ OSL_FAIL( "ResultDataSupplier::getResult - Empty name!" );
+ break;
+ }
+
+ // Assemble URL for child.
+ OUString aURL = assembleChildURL( rName );
+
+ m_pImpl->m_aResults.emplace_back( aURL );
+
+ if ( n == nIndex )
+ {
+ // Result obtained.
+ bFound = true;
+ break;
+ }
+ }
+ }
+
+ if ( !bFound )
+ m_pImpl->m_bCountFinal = true;
+
+ rtl::Reference< ::ucbhelper::ResultSet > xResultSet = getResultSet().get();
+ if ( xResultSet.is() )
+ {
+ // Callbacks follow!
+ aGuard.clear();
+
+ if ( nOldCount < m_pImpl->m_aResults.size() )
+ xResultSet->rowCountChanged( nOldCount, m_pImpl->m_aResults.size() );
+
+ if ( m_pImpl->m_bCountFinal )
+ xResultSet->rowCountFinal();
+ }
+
+ return bFound;
+}
+
+// virtual
+sal_uInt32 ResultSetDataSupplier::totalCount()
+{
+ osl::ClearableGuard< osl::Mutex > aGuard( m_pImpl->m_aMutex );
+
+ if ( m_pImpl->m_bCountFinal )
+ return m_pImpl->m_aResults.size();
+
+ sal_uInt32 nOldCount = m_pImpl->m_aResults.size();
+
+ if ( queryNamesOfChildren() )
+ {
+ for ( sal_uInt32 n = nOldCount;
+ n < sal::static_int_cast<sal_uInt32>(
+ m_pImpl->m_pNamesOfChildren->getLength());
+ ++n )
+ {
+ const OUString & rName
+ = m_pImpl->m_pNamesOfChildren->getConstArray()[ n ];
+
+ if ( rName.isEmpty() )
+ {
+ OSL_FAIL( "ResultDataSupplier::getResult - Empty name!" );
+ break;
+ }
+
+ // Assemble URL for child.
+ OUString aURL = assembleChildURL( rName );
+
+ m_pImpl->m_aResults.emplace_back( aURL );
+ }
+ }
+
+ m_pImpl->m_bCountFinal = true;
+
+ rtl::Reference< ::ucbhelper::ResultSet > xResultSet = getResultSet().get();
+ if ( xResultSet.is() )
+ {
+ // Callbacks follow!
+ aGuard.clear();
+
+ if ( nOldCount < m_pImpl->m_aResults.size() )
+ xResultSet->rowCountChanged( nOldCount, m_pImpl->m_aResults.size() );
+
+ xResultSet->rowCountFinal();
+ }
+
+ return m_pImpl->m_aResults.size();
+}
+
+// virtual
+sal_uInt32 ResultSetDataSupplier::currentCount()
+{
+ return m_pImpl->m_aResults.size();
+}
+
+// virtual
+bool ResultSetDataSupplier::isCountFinal()
+{
+ return m_pImpl->m_bCountFinal;
+}
+
+// virtual
+uno::Reference< sdbc::XRow >
+ResultSetDataSupplier::queryPropertyValues( sal_uInt32 nIndex )
+{
+ osl::Guard< osl::Mutex > aGuard( m_pImpl->m_aMutex );
+
+ if ( nIndex < m_pImpl->m_aResults.size() )
+ {
+ uno::Reference< sdbc::XRow > xRow = m_pImpl->m_aResults[ nIndex ].xRow;
+ if ( xRow.is() )
+ {
+ // Already cached.
+ return xRow;
+ }
+ }
+
+ if ( getResult( nIndex ) )
+ {
+ uno::Reference< sdbc::XRow > xRow = Content::getPropertyValues(
+ m_pImpl->m_xContext,
+ getResultSet()->getProperties(),
+ m_pImpl->m_xContent->getContentProvider().get(),
+ queryContentIdentifierString( nIndex ) );
+ m_pImpl->m_aResults[ nIndex ].xRow = xRow;
+ return xRow;
+ }
+
+ return uno::Reference< sdbc::XRow >();
+}
+
+// virtual
+void ResultSetDataSupplier::releasePropertyValues( sal_uInt32 nIndex )
+{
+ osl::Guard< osl::Mutex > aGuard( m_pImpl->m_aMutex );
+
+ if ( nIndex < m_pImpl->m_aResults.size() )
+ m_pImpl->m_aResults[ nIndex ].xRow.clear();
+}
+
+// virtual
+void ResultSetDataSupplier::close()
+{
+}
+
+// virtual
+void ResultSetDataSupplier::validate()
+{
+ if ( m_pImpl->m_bThrowException )
+ throw ucb::ResultSetException();
+}
+
+bool ResultSetDataSupplier::queryNamesOfChildren()
+{
+ osl::Guard< osl::Mutex > aGuard( m_pImpl->m_aMutex );
+
+ if ( m_pImpl->m_pNamesOfChildren == nullptr )
+ {
+ std::unique_ptr<uno::Sequence< OUString >> pNamesOfChildren(
+ new uno::Sequence< OUString >() );
+
+ if ( !m_pImpl->m_xContent->getContentProvider()->queryNamesOfChildren(
+ m_pImpl->m_xContent->getIdentifier()->getContentIdentifier(),
+ *pNamesOfChildren ) )
+ {
+ OSL_FAIL( "Got no list of children!" );
+ m_pImpl->m_bThrowException = true;
+ return false;
+ }
+ else
+ {
+ m_pImpl->m_pNamesOfChildren = std::move( pNamesOfChildren );
+ }
+ }
+ return true;
+}
+
+OUString
+ResultSetDataSupplier::assembleChildURL( const OUString& aName )
+{
+ OUString aContURL
+ = m_pImpl->m_xContent->getIdentifier()->getContentIdentifier();
+ OUString aURL( aContURL );
+
+ sal_Int32 nUrlEnd = aURL.lastIndexOf( '/' );
+ if ( nUrlEnd != aURL.getLength() - 1 )
+ aURL += "/";
+
+ aURL += aName;
+ return aURL;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */