| /******************************************************************************* |
| * Copyright (c) 2014 EclipseSource Muenchen GmbH 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: |
| * Edgar Mueller - initial API and implementation |
| ******************************************************************************/ |
| package org.eclipse.emf.emfstore.fuzzy.emf; |
| |
| import java.util.Collection; |
| import java.util.Collections; |
| import java.util.Map; |
| import java.util.Set; |
| |
| import org.eclipse.emf.ecore.EObject; |
| import org.eclipse.emf.ecore.EStructuralFeature.Setting; |
| import org.eclipse.emf.ecore.resource.Resource; |
| import org.eclipse.emf.ecore.util.EcoreUtil; |
| |
| import com.google.common.base.Predicate; |
| |
| /** |
| * A predicate that checks whether a given project has an external reference, i.e. |
| * a cross-resource reference. |
| * |
| * @author emueller |
| * @since 2.0 |
| */ |
| public class ESEObjectHasExternalReference implements Predicate<EObject> { |
| |
| /** |
| * {@inheritDoc} |
| * |
| * @see com.google.common.base.Predicate#apply(java.lang.Object) |
| */ |
| public boolean apply(EObject root) { |
| final Map<EObject, Collection<Setting>> externalCrossReferences = EcoreUtil.ExternalCrossReferencer |
| .find(Collections.singleton(root)); |
| |
| final Resource rootResource = root.eResource(); |
| final Set<EObject> externalEObjects = externalCrossReferences.keySet(); |
| |
| for (final EObject externalEObject : externalEObjects) { |
| if (externalEObject.eResource() != null && externalEObject.eResource() != rootResource) { |
| return true; |
| } |
| } |
| |
| return false; |
| } |
| |
| } |