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/***************************************************************************
* Copyright (c) 2004-2007 Eike Stepper, Germany.
* 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
* Eike Stepper - maintenance
**************************************************************************/
package org.eclipse.emf.cdo.internal.server.protocol;
import org.eclipse.emf.cdo.common.CDODataInput;
import org.eclipse.emf.cdo.common.CDODataOutput;
import org.eclipse.emf.cdo.common.CDOProtocolConstants;
import org.eclipse.emf.cdo.common.id.CDOID;
import org.eclipse.emf.cdo.common.revision.CDORevision;
import org.eclipse.emf.cdo.internal.server.bundle.OM;
import org.eclipse.emf.cdo.server.IStoreAccessor;
import org.eclipse.emf.cdo.server.StoreThreadLocal;
import org.eclipse.emf.cdo.spi.common.InternalCDORevision;
import org.eclipse.net4j.util.collection.Pair;
import org.eclipse.net4j.util.om.trace.ContextTracer;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
/**
* @author Simon McDuff
*/
public class SyncRevisionIndication extends CDOReadIndication
{
private static final ContextTracer PROTOCOL_TRACER = new ContextTracer(OM.DEBUG_PROTOCOL,
SyncRevisionIndication.class);
private List<Pair<InternalCDORevision, Long>> dirtyObjects = new ArrayList<Pair<InternalCDORevision, Long>>();
private List<Pair<CDOID, Long>> detachedObjects = new ArrayList<Pair<CDOID, Long>>();
private int referenceChunk;
public SyncRevisionIndication(CDOServerProtocol protocol)
{
super(protocol, CDOProtocolConstants.SIGNAL_SYNC);
}
public SyncRevisionIndication(CDOServerProtocol protocol, short signalID)
{
super(protocol, signalID);
}
@Override
protected void indicating(CDODataInput in) throws IOException
{
IStoreAccessor reader = StoreThreadLocal.getAccessor();
if (PROTOCOL_TRACER.isEnabled())
{
PROTOCOL_TRACER.format("Refreshing store accessor: " + reader);
}
reader.refreshRevisions();
referenceChunk = in.readInt();
int size = in.readInt();
for (int i = 0; i < size; i++)
{
CDOID id = in.readCDOID();
int version = in.readInt();
if (version > 0)
{
try
{
InternalCDORevision revision = getRevisionManager().getRevision(id, referenceChunk);
if (revision == null)
{
detachedObjects.add(new Pair<CDOID, Long>(id, getTimestamp(id, version)));
}
else if (revision.getVersion() != version)
{
dirtyObjects.add(new Pair<InternalCDORevision, Long>(revision, getTimestamp(id, version)));
}
}
catch (IllegalArgumentException revisionIsNullException)
{
detachedObjects.add(new Pair<CDOID, Long>(id, getTimestamp(id, version)));
}
}
}
}
private long getTimestamp(CDOID id, int version)
{
CDORevision revision = getRevisionManager().getRevisionByVersion(id, 0, version, false);
if (revision != null)
{
return revision.getRevised() + 1;
}
return CDORevision.UNSPECIFIED_DATE;
}
@Override
protected void responding(CDODataOutput out) throws IOException
{
if (PROTOCOL_TRACER.isEnabled())
{
PROTOCOL_TRACER.format("Sync found " + dirtyObjects.size() + " dirty objects");
}
out.writeInt(dirtyObjects.size());
for (Pair<InternalCDORevision, Long> revisionAndOldRevised : dirtyObjects)
{
out.writeCDORevision(revisionAndOldRevised.getElement1(), referenceChunk);
out.writeLong(revisionAndOldRevised.getElement2());
}
out.writeInt(detachedObjects.size());
for (Pair<CDOID, Long> idAndRevised : detachedObjects)
{
out.writeCDOID(idAndRevised.getElement1());
out.writeLong(idAndRevised.getElement2());
}
}
}
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