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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:
* Simon McDuff - initial API and implementation
* Eike Stepper - maintenance
**************************************************************************/
package org.eclipse.emf.cdo.internal.common.revision.delta;
import org.eclipse.emf.cdo.common.id.CDOID;
import org.eclipse.emf.cdo.common.id.CDOIDProvider;
import org.eclipse.emf.cdo.common.id.CDOIDTemp;
import org.eclipse.emf.cdo.common.model.CDOClass;
import org.eclipse.emf.cdo.common.model.CDOFeature;
import org.eclipse.emf.cdo.common.revision.CDORevision;
import org.eclipse.emf.cdo.common.revision.delta.CDOFeatureDeltaVisitor;
import org.eclipse.emf.cdo.common.revision.delta.CDORemoveFeatureDelta;
import org.eclipse.emf.cdo.spi.common.InternalCDORevision;
import org.eclipse.net4j.util.io.ExtendedDataInput;
import org.eclipse.net4j.util.io.ExtendedDataOutput;
import java.io.IOException;
import java.util.Map;
/**
* @author Simon McDuff
*/
public class CDORemoveFeatureDeltaImpl extends CDOFeatureDeltaImpl implements CDORemoveFeatureDelta,
IListIndexAffecting
{
private int index;
public CDORemoveFeatureDeltaImpl(CDOFeature feature, int index)
{
super(feature);
this.index = index;
}
public CDORemoveFeatureDeltaImpl(ExtendedDataInput in, CDOClass cdoClass) throws IOException
{
super(in, cdoClass);
index = in.readInt();
}
public int getIndex()
{
return index;
}
public Type getType()
{
return Type.REMOVE;
}
public void apply(CDORevision revision)
{
((InternalCDORevision)revision).getList(getFeature()).remove(index);
}
public void accept(CDOFeatureDeltaVisitor visitor)
{
visitor.visit(this);
}
@Override
public void write(ExtendedDataOutput out, CDOClass cdoClass, CDOIDProvider idProvider) throws IOException
{
super.write(out, cdoClass, idProvider);
out.writeInt(index);
}
public void affectIndices(int[] indices)
{
int index = getIndex();
for (int i = 1; i <= indices[0]; i++)
{
if (indices[i] > index)
{
--indices[i];
}
else if (indices[i] == index)
{
int rest = indices[0]-- - i;
if (rest > 0)
{
System.arraycopy(indices, i + 1, indices, i, rest);
--i;
}
}
}
}
@Override
public void adjustReferences(Map<CDOIDTemp, CDOID> idMappings)
{
// do Nothing
}
}
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