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/**
* Copyright (c) 2004 - 2009 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
* Eike Stepper - maintenance
*/
package org.eclipse.emf.internal.cdo.util;
import org.eclipse.emf.cdo.common.id.CDOID;
import org.eclipse.emf.cdo.common.revision.CDOReferenceAdjuster;
import org.eclipse.emf.cdo.common.revision.delta.CDOAddFeatureDelta;
import org.eclipse.emf.cdo.common.revision.delta.CDOContainerFeatureDelta;
import org.eclipse.emf.cdo.common.revision.delta.CDOListFeatureDelta;
import org.eclipse.emf.cdo.common.revision.delta.CDORevisionDelta;
import org.eclipse.emf.cdo.common.revision.delta.CDOSetFeatureDelta;
import org.eclipse.emf.cdo.internal.common.revision.CDORevisionImpl;
import org.eclipse.emf.cdo.internal.common.revision.delta.CDOFeatureDeltaVisitorImpl;
import org.eclipse.emf.cdo.internal.common.revision.delta.CDOListFeatureDeltaImpl;
import org.eclipse.emf.cdo.spi.common.revision.InternalCDOList;
import org.eclipse.emf.cdo.spi.common.revision.InternalCDORevision;
import org.eclipse.emf.ecore.EReference;
import org.eclipse.emf.ecore.EStructuralFeature;
import org.eclipse.emf.spi.cdo.CDOElementProxy;
/**
* @author Simon McDuff
*/
public class RevisionAdjuster extends CDOFeatureDeltaVisitorImpl
{
private CDOReferenceAdjuster referenceAdjuster;
private InternalCDORevision revision;
public RevisionAdjuster(CDOReferenceAdjuster referenceAdjuster)
{
this.referenceAdjuster = referenceAdjuster;
}
public void adjustRevision(InternalCDORevision revision, CDORevisionDelta revisionDelta)
{
this.revision = revision;
revisionDelta.accept(this);
}
@Override
public void visit(CDOContainerFeatureDelta delta)
{
// Delta value must have been adjusted before!
revision.setContainerID(referenceAdjuster.adjustReference(revision.getContainerID()));
revision.setResourceID((CDOID)referenceAdjuster.adjustReference(revision.getResourceID()));
}
@Override
public void visit(CDOAddFeatureDelta delta)
{
// Delta value must have been adjusted before!
revision.setValue(delta.getFeature(), delta.getValue());
}
@Override
public void visit(CDOSetFeatureDelta delta)
{
EStructuralFeature feature = delta.getFeature();
CDORevisionImpl.checkNoFeatureMap(feature);
Object value = delta.getValue();
if (value != null && feature instanceof EReference && !(value instanceof CDOElementProxy))
{
revision.setValue(feature, referenceAdjuster.adjustReference(value));
}
}
@Override
public void visit(CDOListFeatureDelta deltas)
{
EStructuralFeature feature = deltas.getFeature();
CDORevisionImpl.checkNoFeatureMap(feature);
InternalCDOList list = (InternalCDOList)revision.getValue(feature);
if (feature instanceof EReference)
{
int[] indices = ((CDOListFeatureDeltaImpl)deltas).reconstructAddedIndices().getElement2();
for (int i = 1; i <= indices[0]; i++)
{
int index = indices[i];
Object value = list.get(index);
if (value != null && !(value instanceof CDOElementProxy))
{
value = referenceAdjuster.adjustReference(value);
list.set(index, value);
}
}
}
}
}
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