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/***************************************************************************
* Copyright (c) 2004 - 2008 Eike Stepper, Germany, and others
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Eike Stepper - initial API and implementation
* Martin Taal - added hibernate specific implementation
**************************************************************************/
package org.eclipse.emf.cdo.server.internal.hibernate;
import org.eclipse.emf.cdo.internal.protocol.model.CDOClassImpl;
import org.eclipse.emf.cdo.internal.protocol.model.CDOClassProxy;
import org.eclipse.emf.cdo.protocol.model.CDOFeature;
import org.eclipse.emf.cdo.protocol.model.CDOPackage;
import org.eclipse.emf.cdo.protocol.revision.CDORevision;
import org.eclipse.emf.cdo.protocol.revision.delta.CDORevisionDelta;
import org.eclipse.emf.cdo.server.IView;
import org.eclipse.emf.cdo.server.hibernate.IHibernateStoreWriter;
import org.eclipse.emf.cdo.server.internal.hibernate.bundle.OM;
import org.eclipse.net4j.internal.util.om.trace.ContextTracer;
import org.hibernate.FlushMode;
import org.hibernate.Session;
/**
* @author Eike Stepper
*/
public class HibernateStoreWriter extends HibernateStoreReader implements IHibernateStoreWriter
{
private static final ContextTracer TRACER = new ContextTracer(OM.DEBUG, HibernateStoreWriter.class);
public HibernateStoreWriter(HibernateStore store, IView view)
{
super(store, view);
TRACER.trace("Created " + this.getClass().getName() + " for repository " + store.getRepository().getName());
}
@Override
public void commit(CommitContext context)
{
TRACER.trace("Committing transaction");
writePackages(context.getNewPackages());
try
{
// start with fresh hibernate session
final Session session = getHibernateSession();
CDOHibernateThreadContext.setCommitContext(context);
session.setFlushMode(FlushMode.COMMIT);
session.beginTransaction();
for (Object o : context.getNewObjects())
{
final CDORevision cdoRevision = (CDORevision)o;
session.save(CDOHibernateUtil.getInstance().getEntityName(cdoRevision), o);
TRACER
.trace("Persisted new Object " + ((CDORevision)o).getCDOClass().getName() + " id: " + cdoRevision.getID());
}
for (Object o : context.getDirtyObjects())
{
final CDORevision cdoRevision = (CDORevision)o;
session.update(CDOHibernateUtil.getInstance().getEntityName(cdoRevision), o);
TRACER.trace("Updated Object " + ((CDORevision)o).getCDOClass().getName() + " id: " + cdoRevision.getID());
}
TRACER.trace("Commit hibernate transaction");
session.getTransaction().commit();
}
finally
{
TRACER.trace("Clearing used hibernate session");
CDOHibernateThreadContext.setCommitContext(null);
}
TRACER.trace("Applying id mappings");
context.applyIDMappings();
}
@Override
public boolean isReader()
{
return false;
}
@Override
public void rollback(CommitContext context)
{
// don't do anything as the real action is done at commit (which does not happen now)
TRACER.trace("Rollbacked called");
}
@Override
protected void writeClass(CDOClassImpl cdoClass)
{
throw new UnsupportedOperationException("Should not be called, should be handled by hibernate cascade");
}
@Override
protected void writeFeature(CDOFeature feature)
{
throw new UnsupportedOperationException("Should not be called, should be handled by hibernate cascade");
}
@Override
protected void writePackages(CDOPackage... cdoPackages)
{
if (cdoPackages != null && cdoPackages.length > 0)
{
getStore().getPackageHandler().writePackages(cdoPackages);
}
// set a new hibernatesession in the thread
resetHibernateSession();
}
@Override
protected void writePackage(CDOPackage cdoPackage)
{
throw new UnsupportedOperationException("Should not be called");
}
@Override
protected void writeRevision(CDORevision revision)
{
// do nothing, do it all at commit
}
@Override
protected void writeRevisionDelta(CDORevisionDelta revisionDelta)
{
throw new UnsupportedOperationException("Should not be called");
}
@Override
protected void writeRevisionDeltas(CDORevisionDelta[] revisionDeltas)
{
throw new UnsupportedOperationException("Should not be called");
}
@Override
protected void writeRevisions(CDORevision[] revisions)
{
// don't do anything it is done at commit
}
@Override
protected void writeSuperType(CDOClassImpl type, CDOClassProxy superType)
{
throw new UnsupportedOperationException("Should not be called, should be handled by hibernate cascade");
}
}
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