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/***************************************************************************
* Copyright (c) 2004 - 2011 Eike Stepper (Berlin, 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:
* Simon McDuff - initial API and implementation
**************************************************************************/
package org.eclipse.emf.internal.cdo.transaction;
import org.eclipse.emf.cdo.CDOObjectReference;
import org.eclipse.emf.cdo.common.branch.CDOBranch;
import org.eclipse.emf.cdo.common.commit.CDOCommitData;
import org.eclipse.emf.cdo.common.commit.CDOCommitInfo;
import org.eclipse.emf.cdo.common.model.lob.CDOLob;
import org.eclipse.emf.cdo.spi.common.commit.InternalCDOCommitInfoManager;
import org.eclipse.emf.cdo.util.CommitException;
import org.eclipse.emf.cdo.util.ReferentialIntegrityException;
import org.eclipse.emf.internal.cdo.bundle.OM;
import org.eclipse.net4j.util.om.monitor.EclipseMonitor;
import org.eclipse.net4j.util.om.monitor.OMMonitor;
import org.eclipse.net4j.util.om.trace.ContextTracer;
import org.eclipse.emf.spi.cdo.CDOSessionProtocol;
import org.eclipse.emf.spi.cdo.CDOSessionProtocol.CommitTransactionResult;
import org.eclipse.emf.spi.cdo.CDOTransactionStrategy;
import org.eclipse.emf.spi.cdo.InternalCDOSavepoint;
import org.eclipse.emf.spi.cdo.InternalCDOSession;
import org.eclipse.emf.spi.cdo.InternalCDOTransaction;
import org.eclipse.emf.spi.cdo.InternalCDOTransaction.InternalCDOCommitContext;
import org.eclipse.emf.spi.cdo.InternalCDOUserSavepoint;
import org.eclipse.core.runtime.IProgressMonitor;
import java.util.Collection;
import java.util.List;
/**
* @author Simon McDuff
* @since 2.0
*/
public class CDOSingleTransactionStrategyImpl implements CDOTransactionStrategy
{
public static final CDOSingleTransactionStrategyImpl INSTANCE = new CDOSingleTransactionStrategyImpl();
private static final ContextTracer TRACER = new ContextTracer(OM.DEBUG_TRANSACTION,
CDOSingleTransactionStrategyImpl.class);
public CDOSingleTransactionStrategyImpl()
{
}
public CDOCommitInfo commit(InternalCDOTransaction transaction, IProgressMonitor progressMonitor) throws Exception
{
String comment = transaction.getCommitComment();
InternalCDOCommitContext commitContext = transaction.createCommitContext();
if (TRACER.isEnabled())
{
TRACER.format("CDOCommitContext.preCommit"); //$NON-NLS-1$
}
commitContext.preCommit();
CDOCommitData commitData = commitContext.getCommitData();
Collection<CDOLob<?>> lobs = commitContext.getLobs();
InternalCDOSession session = transaction.getSession();
CommitTransactionResult result = null;
if (transaction.isDirty())
{
int viewID = transaction.getViewID();
boolean releaseLocks = transaction.options().isAutoReleaseLocksEnabled();
OMMonitor monitor = new EclipseMonitor(progressMonitor);
CDOSessionProtocol sessionProtocol = session.getSessionProtocol();
result = sessionProtocol.commitTransaction(viewID, comment, releaseLocks, transaction, commitData, lobs, monitor);
String rollbackMessage = result.getRollbackMessage();
if (rollbackMessage != null)
{
List<CDOObjectReference> xRefs = result.getXRefs();
if (xRefs != null)
{
throw new ReferentialIntegrityException(rollbackMessage, xRefs);
}
throw new CommitException(rollbackMessage);
}
}
if (TRACER.isEnabled())
{
TRACER.format("CDOCommitContext.postCommit"); //$NON-NLS-1$
}
// Needed even for non-dirty transactions to release locks
commitContext.postCommit(result);
transaction.setCommitComment(null);
if (result == null)
{
return null;
}
long previousTimeStamp = result.getPreviousTimeStamp();
CDOBranch branch = transaction.getBranch();
long timeStamp = result.getTimeStamp();
String userID = session.getUserID();
InternalCDOCommitInfoManager commitInfoManager = session.getCommitInfoManager();
return commitInfoManager.createCommitInfo(branch, timeStamp, previousTimeStamp, userID, comment, commitData);
}
public void rollback(InternalCDOTransaction transaction, InternalCDOUserSavepoint savepoint)
{
transaction.handleRollback((InternalCDOSavepoint)savepoint);
}
public InternalCDOUserSavepoint setSavepoint(InternalCDOTransaction transaction)
{
return transaction.handleSetSavepoint();
}
public void setTarget(InternalCDOTransaction transaction)
{
// Do nothing
}
public void unsetTarget(InternalCDOTransaction transaction)
{
// Do nothing
}
}
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