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/***************************************************************************
* Copyright (c) 2004 - 2008 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:
* Eike Stepper - initial API and implementation
**************************************************************************/
package org.eclipse.emf.internal.cdo.protocol;
import org.eclipse.emf.cdo.analyzer.CDOFetchRuleManager;
import org.eclipse.emf.cdo.common.CDOProtocolConstants;
import org.eclipse.emf.cdo.common.analyzer.CDOFetchRule;
import org.eclipse.emf.cdo.common.id.CDOID;
import org.eclipse.emf.cdo.common.id.CDOIDUtil;
import org.eclipse.emf.cdo.common.revision.CDORevisionUtil;
import org.eclipse.emf.cdo.spi.common.InternalCDORevision;
import org.eclipse.emf.internal.cdo.CDORevisionManagerImpl;
import org.eclipse.emf.internal.cdo.CDOSessionImpl;
import org.eclipse.emf.internal.cdo.CDOSessionPackageManagerImpl;
import org.eclipse.emf.internal.cdo.bundle.OM;
import org.eclipse.net4j.channel.IChannel;
import org.eclipse.net4j.util.io.ExtendedDataInputStream;
import org.eclipse.net4j.util.io.ExtendedDataOutputStream;
import org.eclipse.net4j.util.om.trace.ContextTracer;
import java.io.IOException;
import java.text.MessageFormat;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
/**
* @author Eike Stepper
*/
public class LoadRevisionRequest extends CDOClientRequest<List<InternalCDORevision>>
{
private static final ContextTracer PROTOCOL = new ContextTracer(OM.DEBUG_PROTOCOL, LoadRevisionRequest.class);
private Collection<CDOID> ids;
private int referenceChunk;
public LoadRevisionRequest(IChannel channel, Collection<CDOID> ids, int referenceChunk)
{
super(channel);
this.ids = ids;
this.referenceChunk = referenceChunk;
}
@Override
protected short getSignalID()
{
return CDOProtocolConstants.SIGNAL_LOAD_REVISION;
}
@Override
protected void requesting(ExtendedDataOutputStream out) throws IOException
{
if (PROTOCOL.isEnabled())
{
PROTOCOL.format("Writing referenceChunk: {0}", referenceChunk);
}
out.writeInt(referenceChunk);
if (PROTOCOL.isEnabled())
{
PROTOCOL.format("Writing {0} IDs", ids.size());
}
out.writeInt(ids.size());
for (CDOID id : ids)
{
if (PROTOCOL.isEnabled())
{
PROTOCOL.format("Writing ID: {0}", id);
}
CDOIDUtil.write(out, id);
}
CDOFetchRuleManager ruleManager = getSession().getRevisionManager().getRuleManager();
List<CDOFetchRule> fetchRules = ruleManager.getFetchRules(ids);
if (fetchRules == null || fetchRules.size() <= 0)
{
out.writeInt(0);
}
else
{
// At this point, fetch size is more than one.
int fetchSize = fetchRules.size();
CDOID contextID = ruleManager.getContext();
out.writeInt(fetchSize);
out.writeInt(ruleManager.getLoadRevisionCollectionChunkSize());
CDOIDUtil.write(out, contextID);
for (CDOFetchRule fetchRule : fetchRules)
{
fetchRule.write(out);
}
}
}
@Override
protected List<InternalCDORevision> confirming(ExtendedDataInputStream in) throws IOException
{
CDOSessionImpl session = getSession();
CDORevisionManagerImpl revisionManager = session.getRevisionManager();
CDOSessionPackageManagerImpl packageManager = session.getPackageManager();
ArrayList<InternalCDORevision> revisions = new ArrayList<InternalCDORevision>(ids.size());
if (PROTOCOL.isEnabled())
{
PROTOCOL.format("Reading {0} revisions", ids.size());
}
for (int i = 0; i < ids.size(); i++)
{
InternalCDORevision revision = (InternalCDORevision)CDORevisionUtil.read(in, revisionManager, packageManager);
revisions.add(revision);
}
int size = in.readInt();
if (size != 0)
{
if (PROTOCOL.isEnabled())
{
PROTOCOL.format("Reading {0} additional revisions", size);
}
for (int i = 0; i < size; i++)
{
InternalCDORevision revision = (InternalCDORevision)CDORevisionUtil.read(in, revisionManager, packageManager);
revisionManager.addRevision(revision);
}
}
return revisions;
}
public Collection<CDOID> getIds()
{
return ids;
}
public int getReferenceChunk()
{
return referenceChunk;
}
@Override
public String toString()
{
return MessageFormat.format("{0}(ids={1}, referenceChunk={2})", getClass().getSimpleName(), ids, referenceChunk);
}
}
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