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/*****************************************************************************
* Copyright (c) 2012 CEA LIST.
*
*
* 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:
* Vincent Lorenzo (CEA LIST) Vincent.Lorenzo@cea.fr - Initial API and implementation
*
*****************************************************************************/
package org.eclipse.papyrus.infra.emf.compare.diff.check;
import java.util.Collections;
import java.util.List;
import java.util.Map;
import org.eclipse.emf.compare.diff.engine.IMatchManager;
import org.eclipse.emf.compare.diff.engine.check.AbstractCheck;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.EStructuralFeature;
import org.eclipse.papyrus.infra.emf.compare.diff.utils.PapyrusCompareOptions;
/**
*
* This checker allow to know if differences on a feature should be ignored or not
*
*/
public class FeaturesCheck extends AbstractCheck implements IFeaturesCheck {
/**
* The list of the features that should be ignored in the whole diff
*/
private final List<EStructuralFeature> ignoreAll;
/**
* the list of the features that should be ignored for some EObject
*/
private final Map<EStructuralFeature, List<EObject>> ignoreSomeCase;
/**
*
* Constructor.
*
* @param manager
* @param options
*/
@SuppressWarnings("unchecked")
//cast on List and Map
public FeaturesCheck(final IMatchManager manager, final Map<String, Object> options) {
super(manager);
if(options != null && options.containsKey(PapyrusCompareOptions.KEY_IGNORE_ALL_CHANGES_ON_FEATURES)) {
this.ignoreAll = (List<EStructuralFeature>)options.get(PapyrusCompareOptions.KEY_IGNORE_ALL_CHANGES_ON_FEATURES);
} else {
this.ignoreAll = Collections.EMPTY_LIST;
}
if(options != null && options.containsKey(PapyrusCompareOptions.KEY_IGNORE_CHANGES_ON_FEATURES_FOR)) {
this.ignoreSomeCase = (Map<EStructuralFeature, List<EObject>>)options.get(PapyrusCompareOptions.KEY_IGNORE_CHANGES_ON_FEATURES_FOR);
} else {
this.ignoreSomeCase = Collections.EMPTY_MAP;
}
}
/**
*
* Constructor.
*
* @param manager
*/
public FeaturesCheck(final IMatchManager manager) {
this(manager, null);
}
/**
* This method is used to know if a feature should always be ignored
*
* @param feature
* @return
*/
public boolean shouldBeIgnored(final EStructuralFeature feature) {
return this.ignoreAll.contains(feature);
}
/**
* This method begins by testing the feature must ALWAYS be ignored using shouldBeIgnored(feature).
* If not, we verify is the feature should be ignored in some case, depending on its context
*
*
* @param feature
* @param context
* @return
*/
public boolean shouldBeIgnored(final EStructuralFeature feature, final EObject context) {
if(shouldBeIgnored(feature)) {
return true;
}
final List<EObject> values = this.ignoreSomeCase.get(feature);
if(values != null) {
return values.contains(context);
}
return false;
}
}
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