/**
* Copyright (c) 2013 committers of YAKINDU 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:
* committers of YAKINDU - initial API and implementation
*
*/
package org.yakindu.sct.compare.match;
import org.eclipse.emf.common.util.Monitor;
import org.eclipse.emf.compare.Comparison;
import org.eclipse.emf.compare.match.DefaultComparisonFactory;
import org.eclipse.emf.compare.match.DefaultEqualityHelperFactory;
import org.eclipse.emf.compare.match.DefaultMatchEngine;
import org.eclipse.emf.compare.match.IComparisonFactory;
import org.eclipse.emf.compare.match.IMatchEngine;
import org.eclipse.emf.compare.match.eobject.IEObjectMatcher;
import org.eclipse.emf.compare.scope.DefaultComparisonScope;
import org.eclipse.emf.compare.scope.IComparisonScope;
import org.eclipse.emf.compare.utils.UseIdentifiers;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.EPackage;
import org.eclipse.gmf.runtime.notation.NotationPackage;
import org.yakindu.sct.model.sgraph.SGraphPackage;
import com.google.common.base.Predicate;
/**
*
* @author andreas muelder - Initial contribution and API
*
*/
public class SCTMatchEngineFactory implements IMatchEngine.Factory {
private int ranking = 0;
@Override
public IMatchEngine getMatchEngine() {
final IComparisonFactory comparisonFactory = new DefaultComparisonFactory(new DefaultEqualityHelperFactory());
final IEObjectMatcher matcher = DefaultMatchEngine.createDefaultEObjectMatcher(UseIdentifiers.WHEN_AVAILABLE);
return new SCTMatchEngine(matcher, comparisonFactory);
}
@Override
public int getRanking() {
return ranking;
}
@Override
public void setRanking(int parseInt) {
ranking = parseInt;
}
@Override
public boolean isMatchEngineFactoryFor(IComparisonScope scope) {
return true;
}
public static class SCTMatchEngine extends DefaultMatchEngine {
public SCTMatchEngine(IEObjectMatcher matcher, IComparisonFactory comparisonFactory) {
super(matcher, comparisonFactory);
}
@Override
public Comparison match(IComparisonScope scope, Monitor monitor) {
Predicate<EObject> predicate = new Predicate<EObject>() {
@Override
public boolean apply(EObject eobject) {
// We only want to diff the SGraph and notation elements,
// not the transient palceholders for concrete languages
EPackage ePackage = eobject.eClass().getEPackage();
return ePackage == SGraphPackage.eINSTANCE || ePackage == NotationPackage.eINSTANCE;
}
};
if (scope instanceof DefaultComparisonScope) {
DefaultComparisonScope defaultScope = (DefaultComparisonScope) scope;
defaultScope.setEObjectContentFilter(predicate);
defaultScope.setResourceContentFilter(predicate);
}
return super.match(scope, monitor);
}
}
}