| /******************************************************************************* |
| * Copyright (c) 2012 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.utils; |
| |
| /** |
| * This can be used to tell EMF Compare which strategy should be used when matching the EObjects as regards |
| * the identifier. |
| * <p> |
| * <ul> |
| * <li>ONLY tells EMF Compare to match elements through their ID only. Any element that does not have any |
| * identifier will remain unmatched.</li> |
| * <li>WHEN_AVAILABLE tells EMF Compare to match elements through their IDs whenever possible, but fall back |
| * to a proximity algorithm for other elements.</li> |
| * <li>NEVER tells EMF Compare to ignore identifiers altogether.</li> |
| * </ul> |
| * </p> |
| * |
| * @author <a href="mailto:mikael.barbero@obeo.fr">Mikael Barbero</a> |
| */ |
| public enum UseIdentifiers { |
| /** |
| * Only use id, do not fall back on content based matching if no id is found. This means any element not |
| * having an ID will not be matched. |
| */ |
| ONLY, |
| |
| /** |
| * Use ID when available on an element, if not available use the content matching strategy. |
| */ |
| WHEN_AVAILABLE, |
| |
| /** |
| * Never use IDs, always use the content matching strategy. That's useful for instance when you want to |
| * compare two results of a transformation which have arbitrary IDs. |
| */ |
| NEVER |
| } |
