/*******************************************************************************
* Copyright (c) 2008-2011 Chair for Applied Software Engineering,
* Technische Universitaet Muenchen.
* 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:
******************************************************************************/
package org.eclipse.emf.emfstore.server.conflictDetection;
import java.util.Set;
import org.eclipse.emf.emfstore.common.model.ModelElementId;
import org.eclipse.emf.emfstore.server.model.versioning.operations.AbstractOperation;
/**
* Detects conflicts by single elements.
*
* @author koegel
*/
public class ByModelElementConflictDetectionStrategy implements ConflictDetectionStrategy {
/**
* {@inheritDoc}
*
* @see org.eclipse.emf.emfstore.server.conflictDetection.ConflictDetectionStrategy#doConflict(org.eclipse.emf.emfstore.server.model.versioning.operations.AbstractOperation,
* org.eclipse.emf.emfstore.server.model.versioning.operations.AbstractOperation)
*/
public boolean doConflict(AbstractOperation operationA, AbstractOperation operationB) {
Set<ModelElementId> allInvolvedModelElementsA = operationA.getAllInvolvedModelElements();
Set<ModelElementId> allInvolvedModelElementsB = operationB.getAllInvolvedModelElements();
return allInvolvedModelElementsA.removeAll(allInvolvedModelElementsB);
}
/**
* {@inheritDoc}
*
* @see org.eclipse.emf.emfstore.server.conflictDetection.ConflictDetectionStrategy#isRequired(org.eclipse.emf.emfstore.server.model.versioning.operations.AbstractOperation,
* org.eclipse.emf.emfstore.server.model.versioning.operations.AbstractOperation)
*/
public boolean isRequired(AbstractOperation requiredOperation, AbstractOperation operation) {
return this.doConflict(requiredOperation, operation);
}
}