| /******************************************************************************* |
| * Copyright 2011 Chair for Applied Software Engineering, |
| * Technische Universitaet Muenchen. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under 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.HashSet; |
| import java.util.Set; |
| |
| import org.eclipse.emf.ecore.EObject; |
| import org.eclipse.emf.emfstore.common.model.ModelElementId; |
| import org.eclipse.emf.emfstore.common.model.Project; |
| import org.eclipse.emf.emfstore.server.model.versioning.operations.AbstractOperation; |
| |
| /** |
| * Detects conflicts by documents. |
| * |
| * @author koegel |
| */ |
| public class ByDocumentConflictDetectionStrategy implements ConflictDetectionStrategy { |
| |
| private Project project; |
| |
| /** |
| * Set the project that is currently valid for the detection of the conflicts. |
| * |
| * @param project the current project |
| * @return |
| */ |
| public void setProject(Project project) { |
| this.project = project; |
| } |
| |
| /** |
| * {@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(); |
| Set<EObject> allInvolvedRootElementsA = new HashSet<EObject>(); |
| Set<EObject> allInvolvedRootElementsB = new HashSet<EObject>(); |
| for (ModelElementId modelElementId : allInvolvedModelElementsA) { |
| EObject modelElement = project.getModelElement(modelElementId); |
| if (modelElement == null) { |
| continue; |
| } |
| allInvolvedRootElementsA.add(getRootLevelParent(modelElement)); |
| } |
| for (ModelElementId modelElementId : allInvolvedModelElementsB) { |
| EObject modelElement = project.getModelElement(modelElementId); |
| if (modelElement == null) { |
| continue; |
| } |
| allInvolvedRootElementsB.add(getRootLevelParent(modelElement)); |
| } |
| return allInvolvedRootElementsA.removeAll(allInvolvedRootElementsB); |
| } |
| |
| /** |
| * {@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); |
| } |
| |
| private EObject getRootLevelParent(EObject modelElement) { |
| EObject parent = modelElement; |
| EObject nextParent = modelElement.eContainer(); |
| while (nextParent != null) { |
| parent = nextParent; |
| nextParent = nextParent.eContainer(); |
| } |
| return parent; |
| } |
| |
| } |