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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
* Simon McDuff - http://bugs.eclipse.org/210868
**************************************************************************/
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.model.CDOClass;
import org.eclipse.emf.cdo.common.model.CDOFeature;
import org.eclipse.emf.cdo.internal.server.bundle.OM;
import org.eclipse.emf.cdo.spi.common.revision.InternalCDORevision;
import org.eclipse.net4j.util.collection.MoveableList;
import org.eclipse.net4j.util.om.trace.ContextTracer;
import java.io.IOException;
/**
* @author Eike Stepper
*/
public class LoadChunkIndication extends CDOReadIndication
{
private static final ContextTracer PROTOCOL_TRACER = new ContextTracer(OM.DEBUG_PROTOCOL, LoadChunkIndication.class);
private CDOID id;
private int version;
private CDOFeature feature;
private int fromIndex;
private int toIndex;
public LoadChunkIndication(CDOServerProtocol protocol)
{
super(protocol, CDOProtocolConstants.SIGNAL_LOAD_CHUNK);
}
@Override
protected void indicating(CDODataInput in) throws IOException
{
id = in.readCDOID();
if (PROTOCOL_TRACER.isEnabled())
{
PROTOCOL_TRACER.format("Read revision ID: {0}", id);
}
version = in.readInt();
if (PROTOCOL_TRACER.isEnabled())
{
PROTOCOL_TRACER.format("Read revision version: {0}", version);
}
CDOClass cdoClass = in.readCDOClassRefAndResolve();
int featureID = in.readInt();
feature = cdoClass.getAllFeatures()[featureID];
if (PROTOCOL_TRACER.isEnabled())
{
PROTOCOL_TRACER.format("Read feature: {0}", feature);
}
fromIndex = in.readInt();
if (PROTOCOL_TRACER.isEnabled())
{
PROTOCOL_TRACER.format("Read fromIndex: {0}", fromIndex);
}
toIndex = in.readInt();
if (PROTOCOL_TRACER.isEnabled())
{
PROTOCOL_TRACER.format("Read toIndex: {0}", toIndex);
}
}
@Override
protected void responding(CDODataOutput out) throws IOException
{
InternalCDORevision revision = getRevisionManager().getRevisionByVersion(id, 0, version);
getRevisionManager().ensureChunk(revision, feature, fromIndex, toIndex + 1);
MoveableList<Object> list = revision.getList(feature);
for (int i = fromIndex; i <= toIndex; i++)
{
feature.getType().writeValue(out, list.get(i));
}
}
}
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