| /* |
| * Copyright (c) 2008-2012, 2014, 2015 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.cdo.internal.common.revision.delta; |
| |
| import org.eclipse.emf.cdo.common.protocol.CDODataInput; |
| import org.eclipse.emf.cdo.common.protocol.CDODataOutput; |
| import org.eclipse.emf.cdo.common.revision.CDOList; |
| import org.eclipse.emf.cdo.common.revision.CDORevision; |
| import org.eclipse.emf.cdo.common.revision.delta.CDOFeatureDelta; |
| 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.revision.InternalCDOFeatureDelta.ListIndexAffecting; |
| 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 CDORemoveFeatureDeltaImpl extends CDOSingleValueFeatureDeltaImpl |
| implements CDORemoveFeatureDelta, ListIndexAffecting |
| { |
| public CDORemoveFeatureDeltaImpl(EStructuralFeature feature, int index) |
| { |
| super(feature, index, UNKNOWN_VALUE); |
| } |
| |
| public CDORemoveFeatureDeltaImpl(CDODataInput in, EClass eClass) throws IOException |
| { |
| super(in, eClass); |
| } |
| |
| @Override |
| protected void writeValue(CDODataOutput out, EClass eClass) throws IOException |
| { |
| // Do nothing |
| } |
| |
| @Override |
| protected Object readValue(CDODataInput in, EClass eClass) throws IOException |
| { |
| return UNKNOWN_VALUE; |
| } |
| |
| public Type getType() |
| { |
| return Type.REMOVE; |
| } |
| |
| public CDOFeatureDelta copy() |
| { |
| CDORemoveFeatureDeltaImpl delta = new CDORemoveFeatureDeltaImpl(getFeature(), getIndex()); |
| delta.setValue(getValue()); |
| return delta; |
| } |
| |
| public Object applyTo(CDORevision revision) |
| { |
| EStructuralFeature feature = getFeature(); |
| int index = getIndex(); |
| |
| InternalCDORevision internalRevision = (InternalCDORevision)revision; |
| CDOList list = internalRevision.getList(feature); |
| return list.remove(index); |
| } |
| |
| public void accept(CDOFeatureDeltaVisitor visitor) |
| { |
| visitor.visit(this); |
| } |
| |
| public void affectIndices(ListTargetAdding sources[], 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); |
| System.arraycopy(sources, i + 1, sources, i, rest); |
| --i; |
| } |
| } |
| } |
| } |
| } |