/* -*- 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 "cachedcontentresultsetstub.hxx"
#include <com/sun/star/sdbc/FetchDirection.hpp>
#include <com/sun/star/sdbc/SQLException.hpp>
#include <com/sun/star/ucb/FetchError.hpp>
#include <osl/diagnose.h>
#include <cppuhelper/queryinterface.hxx>
#include <ucbhelper/macros.hxx>
using namespace com::sun::star::beans;
using namespace com::sun::star::lang;
using namespace com::sun::star::sdbc;
using namespace com::sun::star::ucb;
using namespace com::sun::star::uno;
using namespace cppu;
CachedContentResultSetStub::CachedContentResultSetStub( Reference< XResultSet > const & xOrigin )
: ContentResultSetWrapper( xOrigin )
, m_nColumnCount( 0 )
, m_bColumnCountCached( false )
, m_bNeedToPropagateFetchSize( true )
, m_bFirstFetchSizePropagationDone( false )
, m_nLastFetchSize( 1 )//this value is not important at all
, m_bLastFetchDirection( true )//this value is not important at all
, m_aPropertyNameForFetchSize( u"FetchSize"_ustr )
, m_aPropertyNameForFetchDirection( u"FetchDirection"_ustr )
{
impl_init();
}
CachedContentResultSetStub::~CachedContentResultSetStub()
{
impl_deinit();
}
// XInterface methods.
void SAL_CALL CachedContentResultSetStub::acquire()
noexcept
{
OWeakObject::acquire();
}
void SAL_CALL CachedContentResultSetStub::release()
noexcept
{
OWeakObject::release();
}
Any SAL_CALL CachedContentResultSetStub
::queryInterface( const Type& rType )
{
//list all interfaces inclusive baseclasses of interfaces
Any aRet = ContentResultSetWrapper::queryInterface( rType );
if( aRet.hasValue() )
return aRet;
aRet = cppu::queryInterface( rType
, static_cast< XTypeProvider* >( this )
, static_cast< XServiceInfo* >( this )
, static_cast< XFetchProvider* >( this )
, static_cast< XFetchProviderForContentAccess* >( this )
);
return aRet.hasValue() ? aRet : OWeakObject::queryInterface( rType );
}
// own methods. ( inherited )
//virtual, only called from ContentResultSetWrapperListener
void CachedContentResultSetStub
::impl_propertyChange( const PropertyChangeEvent& rEvt )
{
std::unique_lock aGuard(m_aMutex);
impl_EnsureNotDisposed(aGuard);
//don't notify events on fetchsize and fetchdirection to the above CachedContentResultSet
//because it will ignore them anyway and we can save this remote calls
if( rEvt.PropertyName == m_aPropertyNameForFetchSize
|| rEvt.PropertyName == m_aPropertyNameForFetchDirection )
return;
PropertyChangeEvent aEvt( rEvt );
aEvt.Source = static_cast< XPropertySet * >( this );
aEvt.Further = false;
impl_notifyPropertyChangeListeners( aGuard, aEvt );
}
//virtual, only called from ContentResultSetWrapperListener
void CachedContentResultSetStub
::impl_vetoableChange( const PropertyChangeEvent& rEvt )
{
std::unique_lock aGuard(m_aMutex);
impl_EnsureNotDisposed(aGuard);
//don't notify events on fetchsize and fetchdirection to the above CachedContentResultSet
//because it will ignore them anyway and we can save this remote calls
if( rEvt.PropertyName == m_aPropertyNameForFetchSize
|| rEvt.PropertyName == m_aPropertyNameForFetchDirection )
return;
PropertyChangeEvent aEvt( rEvt );
aEvt.Source = static_cast< XPropertySet * >( this );
aEvt.Further = false;
impl_notifyVetoableChangeListeners( aGuard, aEvt );
}
// XTypeProvider methods.
XTYPEPROVIDER_COMMON_IMPL( CachedContentResultSetStub )
//list all interfaces exclusive baseclasses
Sequence< Type > SAL_CALL CachedContentResultSetStub
::getTypes()
{
static Sequence<Type> ourTypes(
{ CPPU_TYPE_REF( XTypeProvider ),
CPPU_TYPE_REF( XServiceInfo ),
CPPU_TYPE_REF( XComponent ),
CPPU_TYPE_REF( XCloseable ),
CPPU_TYPE_REF( XResultSetMetaDataSupplier ),
CPPU_TYPE_REF( XPropertySet ),
CPPU_TYPE_REF( XPropertyChangeListener ),
CPPU_TYPE_REF( XVetoableChangeListener ),
CPPU_TYPE_REF( XResultSet ),
CPPU_TYPE_REF( XContentAccess ),
CPPU_TYPE_REF( XRow ),
CPPU_TYPE_REF( XFetchProvider ),
CPPU_TYPE_REF( XFetchProviderForContentAccess ) } );
return ourTypes;
}
// XServiceInfo methods.
OUString SAL_CALL CachedContentResultSetStub::getImplementationName()
{
return u"com.sun.star.comp.ucb.CachedContentResultSetStub"_ustr;
}
sal_Bool SAL_CALL CachedContentResultSetStub::supportsService( const OUString& ServiceName )
{
return cppu::supportsService( this, ServiceName );
}
css::uno::Sequence< OUString > SAL_CALL CachedContentResultSetStub::getSupportedServiceNames()
{
return { u"com.sun.star.ucb.CachedContentResultSetStub"_ustr };
}
// XFetchProvider methods.
FetchResult CachedContentResultSetStub::impl_fetchHelper(
std::unique_lock<std::mutex>& rGuard,
sal_Int32 nRowStartPosition, sal_Int32 nRowCount, bool bDirection,
std::function<void( std::unique_lock<std::mutex>&, css::uno::Any& rRowContent)> impl_loadRow)
{
impl_EnsureNotDisposed(rGuard);
if( !m_xResultSetOrigin.is() )
{
OSL_FAIL( "broadcaster was disposed already" );
throw RuntimeException();
}
impl_propagateFetchSizeAndDirection( rGuard, nRowCount, bDirection );
FetchResult aRet;
aRet.StartIndex = nRowStartPosition;
aRet.Orientation = bDirection;
aRet.FetchError = FetchError::SUCCESS; /*ENDOFDATA, EXCEPTION*/
sal_Int32 nOldOriginal_Pos = m_xResultSetOrigin->getRow();
if( impl_isForwardOnly(rGuard) )
{
if( nOldOriginal_Pos != nRowStartPosition )
{
/*@todo*/
aRet.FetchError = FetchError::EXCEPTION;
return aRet;
}
if( nRowCount != 1 )
aRet.FetchError = FetchError::EXCEPTION;
aRet.Rows.realloc( 1 );
try
{
impl_loadRow( rGuard, aRet.Rows.getArray()[0] );
}
catch( SQLException& )
{
aRet.Rows.realloc( 0 );
aRet.FetchError = FetchError::EXCEPTION;
return aRet;
}
return aRet;
}
aRet.Rows.realloc( nRowCount );
auto pRows = aRet.Rows.getArray();
bool bOldOriginal_AfterLast = false;
if( !nOldOriginal_Pos )
bOldOriginal_AfterLast = m_xResultSetOrigin->isAfterLast();
sal_Int32 nN = 1;
try
{
bool bValidNewPos = false;
try
{
/*if( nOldOriginal_Pos != nRowStartPosition )*/
bValidNewPos = m_xResultSetOrigin->absolute( nRowStartPosition );
}
catch( SQLException& )
{
aRet.Rows.realloc( 0 );
aRet.FetchError = FetchError::EXCEPTION;
return aRet;
}
if( !bValidNewPos )
{
aRet.Rows.realloc( 0 );
aRet.FetchError = FetchError::EXCEPTION;
/*restore old position*/
if( nOldOriginal_Pos )
m_xResultSetOrigin->absolute( nOldOriginal_Pos );
else if( bOldOriginal_AfterLast )
m_xResultSetOrigin->afterLast();
else
m_xResultSetOrigin->beforeFirst();
return aRet;
}
for( ; nN <= nRowCount; )
{
impl_loadRow( rGuard, pRows[nN-1] );
nN++;
if( nN <= nRowCount )
{
if( bDirection )
{
if( !m_xResultSetOrigin->next() )
{
aRet.Rows.realloc( nN-1 );
aRet.FetchError = FetchError::ENDOFDATA;
break;
}
}
else
{
if( !m_xResultSetOrigin->previous() )
{
aRet.Rows.realloc( nN-1 );
aRet.FetchError = FetchError::ENDOFDATA;
break;
}
}
}
}
}
catch( SQLException& )
{
aRet.Rows.realloc( nN-1 );
aRet.FetchError = FetchError::EXCEPTION;
}
/*restore old position*/
if( nOldOriginal_Pos )
m_xResultSetOrigin->absolute( nOldOriginal_Pos );
else if( bOldOriginal_AfterLast )
m_xResultSetOrigin->afterLast();
else
m_xResultSetOrigin->beforeFirst();
return aRet;
}
FetchResult SAL_CALL CachedContentResultSetStub
::fetch( sal_Int32 nRowStartPosition
, sal_Int32 nRowCount, sal_Bool bDirection )
{
std::unique_lock aGuard(m_aMutex);
impl_init_xRowOrigin(aGuard);
return impl_fetchHelper( aGuard, nRowStartPosition, nRowCount, bDirection,
[&](std::unique_lock<std::mutex>& rGuard, css::uno::Any& rRowContent)
{ return impl_getCurrentRowContent(rGuard, rRowContent, m_xRowOrigin); });
}
sal_Int32 CachedContentResultSetStub
::impl_getColumnCount(std::unique_lock<std::mutex>& /*rGuard*/)
{
sal_Int32 nCount;
bool bCached;
nCount = m_nColumnCount;
bCached = m_bColumnCountCached;
if( !bCached )
{
try
{
Reference< XResultSetMetaData > xMetaData = getMetaData();
if( xMetaData.is() )
nCount = xMetaData->getColumnCount();
}
catch( SQLException& )
{
OSL_FAIL( "couldn't determine the column count" );
nCount = 0;
}
}
m_nColumnCount = nCount;
m_bColumnCountCached = true;
return m_nColumnCount;
}
void CachedContentResultSetStub
::impl_getCurrentRowContent( std::unique_lock<std::mutex>& rGuard, Any& rRowContent
, const Reference< XRow >& xRow )
{
sal_Int32 nCount = impl_getColumnCount(rGuard);
Sequence< Any > aContent( nCount );
auto aContentRange = asNonConstRange(aContent);
for( sal_Int32 nN = 1; nN <= nCount; nN++ )
{
aContentRange[nN-1] = xRow->getObject( nN, nullptr );
}
rRowContent <<= aContent;
}
void CachedContentResultSetStub
::impl_propagateFetchSizeAndDirection( std::unique_lock<std::mutex>& rGuard, sal_Int32 nFetchSize, bool bFetchDirection )
{
//this is done only for the case, that there is another CachedContentResultSet in the chain of underlying ResultSets
//we do not propagate the property 'FetchSize' or 'FetchDirection' via 'setPropertyValue' from the above CachedContentResultSet to save remote calls
//if the underlying ResultSet has a property FetchSize and FetchDirection,
//we will set these properties, if the new given parameters are different from the last ones
if( !m_bNeedToPropagateFetchSize )
return;
bool bNeedAction;
sal_Int32 nLastSize;
bool bLastDirection;
bool bFirstPropagationDone;
bNeedAction = m_bNeedToPropagateFetchSize;
nLastSize = m_nLastFetchSize;
bLastDirection = m_bLastFetchDirection;
bFirstPropagationDone = m_bFirstFetchSizePropagationDone;
if( !bNeedAction )
return;
if( nLastSize == nFetchSize
&& bLastDirection == bFetchDirection
&& bFirstPropagationDone )
return;
if(!bFirstPropagationDone)
{
//check whether the properties 'FetchSize' and 'FetchDirection' do exist
Reference< XPropertySetInfo > xPropertySetInfo = getPropertySetInfoImpl(rGuard);
bool bHasSize = xPropertySetInfo->hasPropertyByName( m_aPropertyNameForFetchSize );
bool bHasDirection = xPropertySetInfo->hasPropertyByName( m_aPropertyNameForFetchDirection );
if(!bHasSize || !bHasDirection)
{
m_bNeedToPropagateFetchSize = false;
return;
}
}
bool bSetSize = ( nLastSize !=nFetchSize ) || !bFirstPropagationDone;
bool bSetDirection = ( bLastDirection !=bFetchDirection ) || !bFirstPropagationDone;
m_bFirstFetchSizePropagationDone = true;
m_nLastFetchSize = nFetchSize;
m_bLastFetchDirection = bFetchDirection;
if( bSetSize )
{
Any aValue;
aValue <<= nFetchSize;
try
{
setPropertyValueImpl( rGuard, m_aPropertyNameForFetchSize, aValue );
}
catch( css::uno::Exception& ) {}
}
if( !bSetDirection )
return;
sal_Int32 nFetchDirection = FetchDirection::FORWARD;
if( !bFetchDirection )
nFetchDirection = FetchDirection::REVERSE;
Any aValue;
aValue <<= nFetchDirection;
try
{
setPropertyValueImpl( rGuard, m_aPropertyNameForFetchDirection, aValue );
}
catch( css::uno::Exception& ) {}
}
// XFetchProviderForContentAccess methods.
void CachedContentResultSetStub
::impl_getCurrentContentIdentifierString( std::unique_lock<std::mutex>& /*rGuard*/, Any& rAny
, const Reference< XContentAccess >& xContentAccess )
{
rAny <<= xContentAccess->queryContentIdentifierString();
}
void CachedContentResultSetStub
::impl_getCurrentContentIdentifier( std::unique_lock<std::mutex>& /*rGuard*/, Any& rAny
, const Reference< XContentAccess >& xContentAccess )
{
rAny <<= xContentAccess->queryContentIdentifier();
}
void CachedContentResultSetStub
::impl_getCurrentContent( std::unique_lock<std::mutex>& /*rGuard*/, Any& rAny
, const Reference< XContentAccess >& xContentAccess )
{
rAny <<= xContentAccess->queryContent();
}
//virtual
FetchResult SAL_CALL CachedContentResultSetStub
::fetchContentIdentifierStrings( sal_Int32 nRowStartPosition
, sal_Int32 nRowCount, sal_Bool bDirection )
{
std::unique_lock aGuard( m_aMutex );
impl_init_xContentAccessOrigin(aGuard);
return impl_fetchHelper( aGuard, nRowStartPosition, nRowCount, bDirection,
[&](std::unique_lock<std::mutex>& rGuard, css::uno::Any& rRowContent)
{ return impl_getCurrentContentIdentifierString(rGuard, rRowContent, m_xContentAccessOrigin); });
}
//virtual
FetchResult SAL_CALL CachedContentResultSetStub
::fetchContentIdentifiers( sal_Int32 nRowStartPosition
, sal_Int32 nRowCount, sal_Bool bDirection )
{
std::unique_lock aGuard( m_aMutex );
impl_init_xContentAccessOrigin(aGuard);
return impl_fetchHelper( aGuard, nRowStartPosition, nRowCount, bDirection,
[&](std::unique_lock<std::mutex>& rGuard, css::uno::Any& rRowContent)
{ return impl_getCurrentContentIdentifier(rGuard, rRowContent, m_xContentAccessOrigin); });
}
//virtual
FetchResult SAL_CALL CachedContentResultSetStub
::fetchContents( sal_Int32 nRowStartPosition
, sal_Int32 nRowCount, sal_Bool bDirection )
{
std::unique_lock aGuard( m_aMutex );
impl_init_xContentAccessOrigin(aGuard);
return impl_fetchHelper( aGuard, nRowStartPosition, nRowCount, bDirection,
[&](std::unique_lock<std::mutex>& rGuard, css::uno::Any& rRowContent)
{ return impl_getCurrentContent(rGuard, rRowContent, m_xContentAccessOrigin); });
}
CachedContentResultSetStubFactory::CachedContentResultSetStubFactory()
{
}
CachedContentResultSetStubFactory::~CachedContentResultSetStubFactory()
{
}
// CachedContentResultSetStubFactory XServiceInfo methods.
OUString SAL_CALL CachedContentResultSetStubFactory::getImplementationName()
{
return u"com.sun.star.comp.ucb.CachedContentResultSetStubFactory"_ustr;
}
sal_Bool SAL_CALL CachedContentResultSetStubFactory::supportsService( const OUString& ServiceName )
{
return cppu::supportsService( this, ServiceName );
}
css::uno::Sequence< OUString > SAL_CALL CachedContentResultSetStubFactory::getSupportedServiceNames()
{
return { u"com.sun.star.ucb.CachedContentResultSetStubFactory"_ustr };
}
// Service factory implementation.
extern "C" SAL_DLLPUBLIC_EXPORT css::uno::XInterface*
ucb_CachedContentResultSetStubFactory_get_implementation(
css::uno::XComponentContext* , css::uno::Sequence<css::uno::Any> const&)
{
return cppu::acquire(new CachedContentResultSetStubFactory());
}
// CachedContentResultSetStubFactory XCachedContentResultSetStubFactory methods.
//virtual
Reference< XResultSet > SAL_CALL CachedContentResultSetStubFactory
::createCachedContentResultSetStub(
const Reference< XResultSet > & xSource )
{
if( xSource.is() )
{
Reference< XResultSet > xRet = new CachedContentResultSetStub( xSource );
return xRet;
}
return nullptr;
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
↑ V547 Expression '!bNeedAction' is always false.