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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 09:06:44 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 09:06:44 +0000
commited5640d8b587fbcfed7dd7967f3de04b37a76f26 (patch)
tree7a5f7c6c9d02226d7471cb3cc8fbbf631b415303 /ucb/source/cacher/cachedcontentresultsetstub.cxx
parentInitial commit. (diff)
downloadlibreoffice-ed5640d8b587fbcfed7dd7967f3de04b37a76f26.tar.xz
libreoffice-ed5640d8b587fbcfed7dd7967f3de04b37a76f26.zip
Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'ucb/source/cacher/cachedcontentresultsetstub.cxx')
-rw-r--r--ucb/source/cacher/cachedcontentresultsetstub.cxx555
1 files changed, 555 insertions, 0 deletions
diff --git a/ucb/source/cacher/cachedcontentresultsetstub.cxx b/ucb/source/cacher/cachedcontentresultsetstub.cxx
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+++ b/ucb/source/cacher/cachedcontentresultsetstub.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 .
+ */
+
+
+#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 com::sun::star::util;
+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( OUString("FetchSize") )
+ , m_aPropertyNameForFetchDirection( OUString("FetchDirection") )
+{
+ 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
+void CachedContentResultSetStub
+ ::impl_propertyChange( const PropertyChangeEvent& rEvt )
+{
+ impl_EnsureNotDisposed();
+
+ //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( aEvt );
+}
+
+
+//virtual
+void CachedContentResultSetStub
+ ::impl_vetoableChange( const PropertyChangeEvent& rEvt )
+{
+ impl_EnsureNotDisposed();
+
+ //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( 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 "com.sun.star.comp.ucb.CachedContentResultSetStub";
+}
+
+sal_Bool SAL_CALL CachedContentResultSetStub::supportsService( const OUString& ServiceName )
+{
+ return cppu::supportsService( this, ServiceName );
+}
+
+css::uno::Sequence< OUString > SAL_CALL CachedContentResultSetStub::getSupportedServiceNames()
+{
+ return { "com.sun.star.ucb.CachedContentResultSetStub" };
+}
+
+
+
+// XFetchProvider methods.
+
+
+FetchResult CachedContentResultSetStub::impl_fetchHelper(
+ sal_Int32 nRowStartPosition, sal_Int32 nRowCount, bool bDirection,
+ std::function<void( css::uno::Any& rRowContent)> impl_loadRow)
+{
+ impl_EnsureNotDisposed();
+ if( !m_xResultSetOrigin.is() )
+ {
+ OSL_FAIL( "broadcaster was disposed already" );
+ throw RuntimeException();
+ }
+ impl_propagateFetchSizeAndDirection( 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() )
+ {
+ 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( 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( 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 )
+{
+ impl_init_xRowOrigin();
+ return impl_fetchHelper( nRowStartPosition, nRowCount, bDirection,
+ [&](css::uno::Any& rRowContent)
+ { return impl_getCurrentRowContent(rRowContent, m_xRowOrigin); });
+}
+
+sal_Int32 CachedContentResultSetStub
+ ::impl_getColumnCount()
+{
+ sal_Int32 nCount;
+ bool bCached;
+ {
+ osl::Guard< osl::Mutex > aGuard( m_aMutex );
+ 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;
+ }
+ }
+ osl::Guard< osl::Mutex > aGuard( m_aMutex );
+ m_nColumnCount = nCount;
+ m_bColumnCountCached = true;
+ return m_nColumnCount;
+}
+
+void CachedContentResultSetStub
+ ::impl_getCurrentRowContent( Any& rRowContent
+ , const Reference< XRow >& xRow )
+{
+ sal_Int32 nCount = impl_getColumnCount();
+
+ 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( 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;
+ {
+ osl::Guard< osl::Mutex > aGuard( m_aMutex );
+ 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 = getPropertySetInfo();
+ bool bHasSize = xPropertySetInfo->hasPropertyByName( m_aPropertyNameForFetchSize );
+ bool bHasDirection = xPropertySetInfo->hasPropertyByName( m_aPropertyNameForFetchDirection );
+
+ if(!bHasSize || !bHasDirection)
+ {
+ osl::Guard< osl::Mutex > aGuard( m_aMutex );
+ m_bNeedToPropagateFetchSize = false;
+ return;
+ }
+ }
+
+ bool bSetSize = ( nLastSize !=nFetchSize ) || !bFirstPropagationDone;
+ bool bSetDirection = ( bLastDirection !=bFetchDirection ) || !bFirstPropagationDone;
+
+ {
+ osl::Guard< osl::Mutex > aGuard( m_aMutex );
+ m_bFirstFetchSizePropagationDone = true;
+ m_nLastFetchSize = nFetchSize;
+ m_bLastFetchDirection = bFetchDirection;
+ }
+
+ if( bSetSize )
+ {
+ Any aValue;
+ aValue <<= nFetchSize;
+ try
+ {
+ setPropertyValue( 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
+ {
+ setPropertyValue( m_aPropertyNameForFetchDirection, aValue );
+ }
+ catch( css::uno::Exception& ) {}
+}
+
+
+// XFetchProviderForContentAccess methods.
+
+
+void CachedContentResultSetStub
+ ::impl_getCurrentContentIdentifierString( Any& rAny
+ , const Reference< XContentAccess >& xContentAccess )
+{
+ rAny <<= xContentAccess->queryContentIdentifierString();
+}
+
+void CachedContentResultSetStub
+ ::impl_getCurrentContentIdentifier( Any& rAny
+ , const Reference< XContentAccess >& xContentAccess )
+{
+ rAny <<= xContentAccess->queryContentIdentifier();
+}
+
+void CachedContentResultSetStub
+ ::impl_getCurrentContent( Any& rAny
+ , const Reference< XContentAccess >& xContentAccess )
+{
+ rAny <<= xContentAccess->queryContent();
+}
+
+//virtual
+FetchResult SAL_CALL CachedContentResultSetStub
+ ::fetchContentIdentifierStrings( sal_Int32 nRowStartPosition
+ , sal_Int32 nRowCount, sal_Bool bDirection )
+{
+ impl_init_xContentAccessOrigin();
+ return impl_fetchHelper( nRowStartPosition, nRowCount, bDirection,
+ [&](css::uno::Any& rRowContent)
+ { return impl_getCurrentContentIdentifierString(rRowContent, m_xContentAccessOrigin); });
+}
+
+//virtual
+FetchResult SAL_CALL CachedContentResultSetStub
+ ::fetchContentIdentifiers( sal_Int32 nRowStartPosition
+ , sal_Int32 nRowCount, sal_Bool bDirection )
+{
+ impl_init_xContentAccessOrigin();
+ return impl_fetchHelper( nRowStartPosition, nRowCount, bDirection,
+ [&](css::uno::Any& rRowContent)
+ { return impl_getCurrentContentIdentifier(rRowContent, m_xContentAccessOrigin); });
+}
+
+//virtual
+FetchResult SAL_CALL CachedContentResultSetStub
+ ::fetchContents( sal_Int32 nRowStartPosition
+ , sal_Int32 nRowCount, sal_Bool bDirection )
+{
+ impl_init_xContentAccessOrigin();
+ return impl_fetchHelper( nRowStartPosition, nRowCount, bDirection,
+ [&](css::uno::Any& rRowContent)
+ { return impl_getCurrentContent(rRowContent, m_xContentAccessOrigin); });
+}
+
+
+
+
+CachedContentResultSetStubFactory::CachedContentResultSetStubFactory()
+{
+}
+
+CachedContentResultSetStubFactory::~CachedContentResultSetStubFactory()
+{
+}
+
+
+// CachedContentResultSetStubFactory XServiceInfo methods.
+
+OUString SAL_CALL CachedContentResultSetStubFactory::getImplementationName()
+{
+ return "com.sun.star.comp.ucb.CachedContentResultSetStubFactory";
+}
+sal_Bool SAL_CALL CachedContentResultSetStubFactory::supportsService( const OUString& ServiceName )
+{
+ return cppu::supportsService( this, ServiceName );
+}
+css::uno::Sequence< OUString > SAL_CALL CachedContentResultSetStubFactory::getSupportedServiceNames()
+{
+ return { "com.sun.star.ucb.CachedContentResultSetStubFactory" };
+}
+
+// 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: */