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/*
* Copyright (c) 2008-2012, 2014-2019 Eike Stepper (Loehne, 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.cdo.internal.common.revision.delta;
import org.eclipse.emf.cdo.common.protocol.CDODataInput;
import org.eclipse.emf.cdo.common.revision.CDOList;
import org.eclipse.emf.cdo.common.revision.CDORevision;
import org.eclipse.emf.cdo.common.revision.delta.CDOAddFeatureDelta;
import org.eclipse.emf.cdo.common.revision.delta.CDOFeatureDeltaVisitor;
import org.eclipse.emf.cdo.spi.common.revision.InternalCDOFeatureDelta.ListIndexAffecting;
import org.eclipse.emf.cdo.spi.common.revision.InternalCDOFeatureDelta.ListTargetAdding;
import org.eclipse.emf.cdo.spi.common.revision.InternalCDORevision;
import org.eclipse.emf.ecore.EClass;
import org.eclipse.emf.ecore.EStructuralFeature;
import java.io.IOException;
/**
* @author Simon McDuff
*/
public class CDOAddFeatureDeltaImpl extends CDOSingleValueFeatureDeltaImpl implements CDOAddFeatureDelta, ListIndexAffecting, ListTargetAdding
{
public CDOAddFeatureDeltaImpl(EStructuralFeature feature, int index, Object value)
{
super(feature, index, value);
}
public CDOAddFeatureDeltaImpl(CDODataInput in, EClass eClass) throws IOException
{
super(in, eClass);
}
@Override
public Type getType()
{
return Type.ADD;
}
@Override
public Object applyTo(CDORevision revision)
{
EStructuralFeature feature = getFeature();
int index = getIndex();
Object value = getValue();
InternalCDORevision internalRevision = (InternalCDORevision)revision;
CDOList list = internalRevision.getOrCreateList(feature);
if (index < 0)
{
index = 0;
}
else
{
int size = list.size();
if (index > size)
{
index = size;
}
}
list.add(index, value);
return null;
}
@Override
public void accept(CDOFeatureDeltaVisitor visitor)
{
visitor.visit(this);
}
@Override
public CDOAddFeatureDelta copy()
{
return new CDOAddFeatureDeltaImpl(getFeature(), getIndex(), getValue());
}
@Override
public void affectIndices(ListTargetAdding[] source, int[] indices)
{
int index = getIndex();
if (index == NO_INDEX)
{
return;
}
for (int i = 1; i <= indices[0]; i++)
{
if (indices[i] >= index)
{
++indices[i];
}
}
}
@Override
public int projectIndex(int index)
{
if (index >= getIndex())
{
--index;
}
return index;
}
}
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