| /******************************************************************************* |
| * Copyright (c) 2014 Obeo. |
| * 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: |
| * Obeo - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.emf.compare.uml2.internal.merge; |
| |
| import java.util.List; |
| |
| import org.eclipse.emf.compare.Diff; |
| import org.eclipse.emf.compare.ReferenceChange; |
| import org.eclipse.emf.compare.merge.ReferenceChangeMerger; |
| import org.eclipse.emf.ecore.EClass; |
| import org.eclipse.emf.ecore.EObject; |
| import org.eclipse.uml2.uml.UMLPackage; |
| |
| /** |
| * UML does not support "EList#addUnique" correctly, especially with references that are part of a |
| * subset/superset relationship. This specific merger will intercept calls to list additions in order to user |
| * the under-performing "EList#add" instead. |
| * |
| * @author <a href="mailto:laurent.goubet@obeo.fr">Laurent Goubet</a> |
| */ |
| public class UMLReferenceChangeMerger extends ReferenceChangeMerger { |
| /** |
| * {@inheritDoc} |
| * |
| * @see org.eclipse.emf.compare.merge.IMerger#isMergerFor(org.eclipse.emf.compare.Diff) |
| */ |
| @Override |
| public boolean isMergerFor(Diff target) { |
| if (target instanceof ReferenceChange) { |
| final EObject container = ((ReferenceChange)target).getReference().eContainer(); |
| if (container instanceof EClass) { |
| return ((EClass)container).getEPackage() instanceof UMLPackage; |
| } |
| } |
| return false; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| protected <E> void addAt(List<E> list, E value, int insertionIndex) { |
| if (insertionIndex < 0 || insertionIndex > list.size()) { |
| list.add(value); |
| } else { |
| list.add(insertionIndex, value); |
| } |
| } |
| } |