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/*************************************************************************
*
* $RCSfile: committer.cxx,v $
*
* $Revision: 1.13 $
*
* last change: $Author: jb $ $Date: 2002-03-28 08:19:54 $
*
* The Contents of this file are made available subject to the terms of
* either of the following licenses
*
* - GNU Lesser General Public License Version 2.1
* - Sun Industry Standards Source License Version 1.1
*
* Sun Microsystems Inc., October, 2000
*
* GNU Lesser General Public License Version 2.1
* =============================================
* Copyright 2000 by Sun Microsystems, Inc.
* 901 San Antonio Road, Palo Alto, CA 94303, USA
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License version 2.1, as published by the Free Software Foundation.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*
*
* Sun Industry Standards Source License Version 1.1
* =================================================
* The contents of this file are subject to the Sun Industry Standards
* Source License Version 1.1 (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.openoffice.org/license.html.
*
* Software provided under this License is provided on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING,
* WITHOUT LIMITATION, WARRANTIES THAT THE SOFTWARE IS FREE OF DEFECTS,
* MERCHANTABLE, FIT FOR A PARTICULAR PURPOSE, OR NON-INFRINGING.
* See the License for the specific provisions governing your rights and
* obligations concerning the Software.
*
* The Initial Developer of the Original Code is: Sun Microsystems, Inc.
*
* Copyright: 2000 by Sun Microsystems, Inc.
*
* All Rights Reserved.
*
* Contributor(s): _______________________________________
*
*
************************************************************************/
#include <stdio.h>
#include "committer.hxx"
#ifndef CONFIGMGR_API_TREEIMPLOBJECTS_HXX_
#include "apitreeimplobj.hxx"
#endif
#ifndef CONFIGMGR_ROOTTREE_HXX_
#include "roottree.hxx"
#endif
#ifndef CONFIGMGR_CMTREEMODEL_HXX
#include "cmtreemodel.hxx"
#endif
#ifndef CONFIGMGR_API_PROVIDERIMPL2_HXX_
#include "confproviderimpl2.hxx"
#endif
#ifndef CONFIGMGR_UPDATEACCESSOR_HXX
#include "updateaccessor.hxx"
#endif
#ifndef CONFIGMGR_TREEACCESSOR_HXX
#include "treeaccessor.hxx"
#endif
namespace configmgr
{
//-----------------------------------------------------------------------------
namespace configapi
{
//-----------------------------------------------------------------------------
using configuration::Tree;
using configuration::CommitHelper;
//-----------------------------------------------------------------------------
namespace
{
//-------------------------------------------------------------------------
struct NotifyDisabler
{
ApiRootTreeImpl& m_rTree;
bool m_bOldState;
NotifyDisabler(ApiRootTreeImpl& rTree)
: m_rTree(rTree)
, m_bOldState(rTree .enableNotification(false) )
{
}
~NotifyDisabler()
{
m_rTree.enableNotification(m_bOldState);
}
};
//-------------------------------------------------------------------------
}
//-----------------------------------------------------------------------------
// class Committer
//-----------------------------------------------------------------------------
Committer::Committer(ApiRootTreeImpl& rTree)
: m_rTree(rTree)
{}
//-----------------------------------------------------------------------------
ITreeManager* Committer::getUpdateProvider()
{
return &m_rTree.getApiTree().getProvider().getProviderImpl();
}
//-----------------------------------------------------------------------------
void Committer::commit()
{
ApiTreeImpl& rApiTree = m_rTree.getApiTree();
OSL_PRECOND(!m_rTree.getLocation().isRoot(),"INTERNAL ERROR: Empty location used.");
OSL_PRECOND(m_rTree.getOptions().isValid(),"INTERNAL ERROR: Invalid Options used.");
ITreeManager* pUpdateProvider = getUpdateProvider();
OSL_ASSERT(pUpdateProvider);
memory::Segment * pCacheSegment = pUpdateProvider->getDataSegment(m_rTree.getLocation(),m_rTree.getOptions());
OSL_ASSERT(rApiTree.getSourceData() == pCacheSegment);
memory::UpdateAccessor aUpdateAccessor(pCacheSegment);
osl::ClearableMutexGuard aLocalGuard(rApiTree.getDataLock());
Tree aTree( aUpdateAccessor.accessor(), rApiTree.getTree());
if (!aTree.hasChanges()) return;
TreeChangeList aChangeList(m_rTree.getOptions(),
aTree.getRootPath(),
aTree.getAttributes(aTree.getRootNode()));
aTree.unbind();
// now do the commit
CommitHelper aHelper(rApiTree.getTree());
if (aHelper.prepareCommit(aUpdateAccessor.accessor(),aChangeList))
try
{
pUpdateProvider->updateTree(aUpdateAccessor,aChangeList);
aHelper.finishCommit(aUpdateAccessor.accessor(),aChangeList);
aLocalGuard.clear(); // done locally
data::Accessor aNotifyAccessor = aUpdateAccessor.downgrade(); // keep a read lock for notification
NotifyDisabler aDisableNotify(m_rTree); // do not notify self
pUpdateProvider->saveAndNotifyUpdate(aNotifyAccessor,aChangeList);
}
catch(...)
{
// should be a special clean-up routine, but for now we just need a consistent state
try
{
// aHelper.finishCommit(aChangeList);
aHelper.failedCommit(aUpdateAccessor.accessor(),aChangeList);
}
catch(configuration::Exception&)
{
OSL_ENSURE(false, "Cleanup really should not throw");
}
throw;
}
}
//-----------------------------------------------------------------------------
}
}
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