| /******************************************************************************* |
| * Copyright (c) 2006, 2018 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v2.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v20.html |
| * |
| * Contributors: |
| * IBM - Initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.ocl.examples.interpreter.console; |
| |
| import java.util.Collection; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Set; |
| |
| import org.eclipse.emf.common.util.BasicEList; |
| import org.eclipse.emf.ecore.EFactory; |
| import org.eclipse.emf.ecore.EPackage; |
| import org.eclipse.emf.ecore.impl.EPackageRegistryImpl; |
| import org.eclipse.ocl.ecore.EcoreEnvironmentFactory; |
| |
| /** |
| * A package registry that delegates to multiple other registries (in order), |
| * also delegating the {@link Map#values()} API in addition to package look-up. |
| * This is safe to use with the {@link EcoreEnvironmentFactory} because Ecore |
| * environments only iterate the values of a registry. |
| * |
| * @author Christian W. Damus (cdamus) |
| */ |
| public class DelegatingPackageRegistry extends EPackageRegistryImpl { |
| private static final long serialVersionUID = -7606528898701523821L; |
| |
| private final List<EPackage.Registry> delegates; |
| |
| public DelegatingPackageRegistry(EPackage.Registry delegate) { |
| delegates = new BasicEList.FastCompare<EPackage.Registry>(1); |
| delegates.add(delegate); |
| } |
| |
| public DelegatingPackageRegistry(EPackage.Registry delegate1, EPackage.Registry delegate2) { |
| delegates = new BasicEList.FastCompare<EPackage.Registry>(2); |
| delegates.add(delegate1); |
| delegates.add(delegate2); |
| } |
| |
| public DelegatingPackageRegistry(List<EPackage.Registry> delegates) { |
| this.delegates = new BasicEList.FastCompare<EPackage.Registry>(delegates); |
| } |
| |
| public Collection<Object> values() { |
| Collection<Object> result = new java.util.ArrayList<Object>(); |
| |
| Set<String> keys = new java.util.HashSet<String>(keySet()); |
| result.addAll(super.values()); |
| |
| for (EPackage.Registry next : delegates) { |
| // get values from the delegates for the keys that we do not yet have |
| for (String key : next.keySet()) { |
| if (!keys.contains(key)) { |
| result.add(next.get(key)); |
| } |
| } |
| } |
| |
| return result; |
| } |
| |
| protected EFactory delegatedGetEFactory(String nsURI) { |
| EFactory result = null; |
| |
| for (EPackage.Registry next : delegates) { |
| result = next.getEFactory(nsURI); |
| } |
| |
| return result; |
| } |
| |
| protected EPackage delegatedGetEPackage(String nsURI) { |
| EPackage result = null; |
| |
| for (EPackage.Registry next : delegates) { |
| result = next.getEPackage(nsURI); |
| } |
| |
| return result; |
| } |
| } |