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/*
* Copyright (c) 2009-2012, 2017 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:
* Eike Stepper - initial API and implementation
* Simon McDuff - bug 210868
*/
package org.eclipse.emf.cdo.server.internal.net4j.protocol;
import org.eclipse.emf.cdo.common.branch.CDOBranchVersion;
import org.eclipse.emf.cdo.common.id.CDOID;
import org.eclipse.emf.cdo.common.model.CDOModelUtil;
import org.eclipse.emf.cdo.common.model.CDOType;
import org.eclipse.emf.cdo.common.protocol.CDODataInput;
import org.eclipse.emf.cdo.common.protocol.CDODataOutput;
import org.eclipse.emf.cdo.common.protocol.CDOProtocolConstants;
import org.eclipse.emf.cdo.server.internal.net4j.bundle.OM;
import org.eclipse.emf.cdo.spi.common.revision.InternalCDORevision;
import org.eclipse.emf.cdo.spi.common.revision.InternalCDORevisionManager;
import org.eclipse.emf.cdo.spi.server.InternalRepository;
import org.eclipse.net4j.util.collection.MoveableList;
import org.eclipse.net4j.util.om.trace.ContextTracer;
import org.eclipse.emf.ecore.EClass;
import org.eclipse.emf.ecore.EStructuralFeature;
import java.io.IOException;
/**
* @author Eike Stepper
*/
public class LoadChunkIndication extends CDOServerReadIndication
{
private static final ContextTracer TRACER = new ContextTracer(OM.DEBUG_PROTOCOL, LoadChunkIndication.class);
private CDOID id;
private CDOBranchVersion branchVersion;
private EStructuralFeature 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 (TRACER.isEnabled())
{
TRACER.format("Read revision ID: {0}", id); //$NON-NLS-1$
}
branchVersion = in.readCDOBranchVersion();
if (TRACER.isEnabled())
{
TRACER.format("Read branchVersion: {0}", branchVersion); //$NON-NLS-1$
}
EClass eClass = (EClass)in.readCDOClassifierRefAndResolve();
int featureID = in.readXInt();
feature = eClass.getEStructuralFeature(featureID);
if (TRACER.isEnabled())
{
TRACER.format("Read feature: {0}", feature); //$NON-NLS-1$
}
fromIndex = in.readXInt();
if (TRACER.isEnabled())
{
TRACER.format("Read fromIndex: {0}", fromIndex); //$NON-NLS-1$
}
toIndex = in.readXInt();
if (TRACER.isEnabled())
{
TRACER.format("Read toIndex: {0}", toIndex); //$NON-NLS-1$
}
}
@Override
protected void responding(CDODataOutput out) throws IOException
{
InternalRepository repository = getRepository();
InternalCDORevisionManager revisionManager = repository.getRevisionManager();
InternalCDORevision revision = revisionManager.getRevisionByVersion(id, branchVersion, 0, true);
repository.ensureChunk(revision, feature, fromIndex, toIndex + 1);
CDOType type = CDOModelUtil.getType(feature);
MoveableList<Object> list = revision.getListOrNull(feature);
if (list != null)
{
for (int i = fromIndex; i <= toIndex; i++)
{
Object value = list.get(i);
type.writeValue(out, value);
}
}
}
}
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