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Diffstat (limited to '')
| -rw-r--r-- | ucb/source/ucp/tdoc/tdoc_datasupplier.cxx | 408 |
1 files changed, 408 insertions, 0 deletions
diff --git a/ucb/source/ucp/tdoc/tdoc_datasupplier.cxx b/ucb/source/ucp/tdoc/tdoc_datasupplier.cxx new file mode 100644 index 000000000..33c4f11cb --- /dev/null +++ b/ucb/source/ucp/tdoc/tdoc_datasupplier.cxx @@ -0,0 +1,408 @@ +/* -*- 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: */ |