302 lines
10 KiB
C++
302 lines
10 KiB
C++
/*************************************************************************
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*
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* $RCSfile: invalidatetree.cxx,v $
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*
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* $Revision: 1.12 $
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*
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* last change: $Author: jb $ $Date: 2002-03-28 09:08:05 $
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*
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* The Contents of this file are made available subject to the terms of
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* either of the following licenses
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*
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* - GNU Lesser General Public License Version 2.1
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* - Sun Industry Standards Source License Version 1.1
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*
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* Sun Microsystems Inc., October, 2000
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*
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* GNU Lesser General Public License Version 2.1
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* =============================================
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* Copyright 2000 by Sun Microsystems, Inc.
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* 901 San Antonio Road, Palo Alto, CA 94303, USA
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License version 2.1, as published by the Free Software Foundation.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*
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*
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* Sun Industry Standards Source License Version 1.1
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* =================================================
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* The contents of this file are subject to the Sun Industry Standards
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* Source License Version 1.1 (the "License"); You may not use this file
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* except in compliance with the License. You may obtain a copy of the
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* License at http://www.openoffice.org/license.html.
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*
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* Software provided under this License is provided on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING,
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* WITHOUT LIMITATION, WARRANTIES THAT THE SOFTWARE IS FREE OF DEFECTS,
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* MERCHANTABLE, FIT FOR A PARTICULAR PURPOSE, OR NON-INFRINGING.
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* See the License for the specific provisions governing your rights and
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* obligations concerning the Software.
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*
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* The Initial Developer of the Original Code is: Sun Microsystems, Inc.
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*
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* Copyright: 2000 by Sun Microsystems, Inc.
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*
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* All Rights Reserved.
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*
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* Contributor(s): _______________________________________
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*
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*
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************************************************************************/
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#include "cachecontroller.hxx"
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#ifndef CONFIGMGR_CHANGE_HXX
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#include "change.hxx"
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#endif
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#ifndef _CONFIGMGR_TREE_VALUENODE_HXX
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#include "valuenode.hxx"
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#endif
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#ifndef CONFIGMGR_UPDATEHELPER_HXX
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#include "updatehelper.hxx"
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#endif
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#ifndef _CONFIGMGR_TREEACTIONS_HXX_
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#include "treeactions.hxx"
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#endif
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#ifndef CONFIGMGR_TREEACCESSOR_HXX
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#include "treeaccessor.hxx"
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#endif
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#ifndef CONFIGMGR_UPDATEACCESSOR_HXX
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#include "updateaccessor.hxx"
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#endif
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#ifndef _CONFIGMGR_TRACER_HXX_
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#include "tracer.hxx"
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#endif
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#ifndef _COM_SUN_STAR_UNO_ANY_HXX_
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#include <com/sun/star/uno/Any.hxx>
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#endif
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#ifndef _COM_SUN_STAR_CONTAINER_NOSUCHELEMENTEXCEPTION_HPP_
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#include <com/sun/star/container/NoSuchElementException.hpp>
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#endif
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#ifndef _VOS_THREAD_HXX_
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#include <vos/thread.hxx>
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#endif
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#ifndef INCLUDED_ALGORITHM
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#include <algorithm>
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#define INCLUDED_ALGORITHM
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#endif
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namespace configmgr
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{
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using namespace com::sun::star::uno;
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using namespace configuration;
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namespace container = com::sun::star::container;
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// -----------------------------------------------------------------------------
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// ------------------------------- invalidateTree -------------------------------
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// -----------------------------------------------------------------------------
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namespace backend
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{
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// -----------------------------------------------------------------------------
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std::auto_ptr<SubtreeChange> createDiffs(data::NodeAccess const& _aCachedNode,
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ISubtree const * _pLoadedSubtree,
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AbsolutePath const& _aAbsoluteSubtreePath)
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{
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OSL_PRECOND(_aCachedNode.isValid(), "Need an existing node to create a diff");
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OSL_PRECOND(_pLoadedSubtree != 0, "Need a result node to create a diff");
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// Create a TreeChangeList with the right name, parentname and ConfigurationProperties
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std::auto_ptr<SubtreeChange> aNewChange(new SubtreeChange(_aAbsoluteSubtreePath.getLocalName().getName().toString(),
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node::Attributes()) );
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if (!createUpdateFromDifference(*aNewChange, _aCachedNode, *_pLoadedSubtree))
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aNewChange.reset();
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return aNewChange;
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}
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// -----------------------------------------------------------------------------
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/*
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std::auto_ptr<ISubtree> TreeManager::loadNodeFromSession( AbsolutePath const& _aAbsoluteSubtreePath,
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const vos::ORef < OOptions >& _xOptions,
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sal_Int16 _nMinLevels) CFG_UNO_THROW_ALL()
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{
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TreeInfo* pInfo = this->requestTreeInfo(_xOptions,true /*create TreeInfo* /);
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CFG_TRACE_INFO_NI("cache manager: cache miss. going to load the node");
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rtl::Reference< OTreeLoader > xLoader = pInfo->getNewLoaderWithoutPending(_aAbsoluteSubtreePath, _nMinLevels, _xOptions, m_xBackend.get());
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OSL_ENSURE(xLoader.is(), "Did not receive a loader for retrieving the node");
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CFG_TRACE_INFO_NI("cache manager: cache miss. going to load the node");
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if (!xLoader.is())
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throw container::NoSuchElementException((::rtl::OUString::createFromAscii("Error while retrieving the node")), NULL);
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// now block for reading
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std::auto_ptr<ISubtree> pResponse;
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try
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{
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pResponse = xLoader->waitToResponse();
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}
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catch (uno::Exception& e)
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{
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pInfo->releaseLoader(xLoader);
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throw;
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}
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pInfo->releaseLoader(xLoader);
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return pResponse;
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}
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*/
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// -----------------------------------------------------------------------------
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class OInvalidateTreeThread: public vos::OThread
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{
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typedef CacheController CacheManager;
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RequestOptions m_aOptions;
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CacheManager& m_rTreeManager;
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Name m_aComponentName;
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public:
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OInvalidateTreeThread(CacheManager& _rTreeManager, Name const & _aComponentName,
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const RequestOptions& _aOptions)
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: m_rTreeManager(_rTreeManager)
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, m_aComponentName(_aComponentName)
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, m_aOptions(_aOptions)
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{}
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~OInvalidateTreeThread()
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{}
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private:
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virtual void SAL_CALL onTerminated()
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{
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delete this;
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}
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virtual void SAL_CALL run();
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};
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// -----------------------------------------------------------------------------
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void CacheController::invalidateComponent(ComponentRequest const & _aComponent) CFG_UNO_THROW_ALL( )
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{
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if (!this->m_bDisposing)
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{
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// start the InvalidateTreeThread only, if we are not at disposemode
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if (OInvalidateTreeThread *pThread =
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new OInvalidateTreeThread(*this, _aComponent.getComponentName(), _aComponent.getOptions()))
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{
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pThread->create();
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}
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else
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OSL_ENSURE(false, "Could not create refresher thread");
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}
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}
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// -----------------------------------------------------------------------------
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CacheLocation CacheController::refreshComponent(ComponentRequest const & _aRequest) CFG_UNO_THROW_ALL()
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{
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if (m_bDisposing) return CacheLocation();
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CacheRef aCache = m_aCacheList.get(_aRequest.getOptions());
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if (!aCache.is()) return CacheLocation();
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// load the Node direct from the session, without using the cache
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ComponentRequest aForcedRequest(_aRequest);
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aForcedRequest.forceReload();
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NodeResult aLoadedInstance = this->getComponentData(aForcedRequest);
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CacheLocation aResult;
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if (aLoadedInstance.is())
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{
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Name aModuleName = aLoadedInstance->root().getModuleName();
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memory::UpdateAccessor aChangingAccessor( aCache->getDataSegment(aModuleName) );
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OSL_ENSURE(aChangingAccessor.is(), "No existing cache line for tree being refreshed");
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data::TreeAddress aCachedTreeAddress = aCache->acquireModule(aModuleName);
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aResult.segment = aCache->getDataSegmentAddress(aModuleName);
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aResult.address = aCachedTreeAddress.addressValue();
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if (aCachedTreeAddress.is())
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try
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{
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std::auto_ptr<SubtreeChange> aTreeChanges;
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data::NodeAddress aRootAddress;
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{
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data::TreeAccessor aTreeAccess(aChangingAccessor.accessor(),aCachedTreeAddress);
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data::NodeAccess aRootNode = aTreeAccess.getRootNode();
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aTreeChanges = createDiffs(aRootNode, aLoadedInstance->data().get(), aLoadedInstance->root().location());
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aRootAddress = aRootNode.address();
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}
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if (aTreeChanges.get() != NULL)
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{
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// change all Values... found in the Subtree in the CacheTree
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applyUpdateWithAdjustmentToTree(*aTreeChanges, aChangingAccessor, aRootAddress);
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data::Accessor aNotifyLock = aChangingAccessor.downgrade(); // keep a read lock during notification
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UpdateRequest anUpdateReq( aTreeChanges.get(),
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aLoadedInstance->root().location(),
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_aRequest.getOptions()
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);
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m_aNotifier.notifyChanged(anUpdateReq);
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}
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aCache->releaseModule(aModuleName);
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}
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catch (...)
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{
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aCache->releaseModule(aModuleName);
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throw;
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}
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}
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return aResult;
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}
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// -----------------------------------------------------------------------------
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void OInvalidateTreeThread::run()
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{
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try
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{
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ComponentRequest aRequest(m_aComponentName, m_aOptions);
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m_rTreeManager.refreshComponent(aRequest);
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}
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catch(uno::Exception&)
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{
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// do nothing, only thread safe exception absorb
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CFG_TRACE_ERROR_NI("OInvalidateTreeThread::run: refreshing failed - ignoring the exception");
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}
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}
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// -----------------------------------------------------------------------------
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} // namespace backend
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// -----------------------------------------------------------------------------
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} // namespace configmgr
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