/* -*- 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.
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: */
↑ V758 The 'rName' reference becomes invalid when temporary object returned by a function is destroyed.
↑ V758 The 'rName' reference becomes invalid when temporary object returned by a function is destroyed.