| /** |
| * <copyright> |
| * |
| * Copyright (c) 2009-2010 Thales Corporate Services S.A.S. |
| * 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: |
| * Thales Corporate Services S.A.S - initial API and implementation |
| * |
| * </copyright> |
| */ |
| |
| package org.eclipse.egf.pattern.ecore; |
| |
| import java.lang.reflect.Field; |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| import org.eclipse.core.resources.IProject; |
| import org.eclipse.egf.common.helper.JavaHelper; |
| import org.eclipse.egf.core.helper.ResourceHelper; |
| import org.eclipse.egf.pattern.Messages; |
| import org.eclipse.emf.codegen.ecore.genmodel.GenModel; |
| import org.eclipse.emf.codegen.ecore.genmodel.GenPackage; |
| import org.eclipse.emf.common.util.URI; |
| import org.eclipse.emf.ecore.EFactory; |
| import org.eclipse.emf.ecore.EObject; |
| import org.eclipse.emf.ecore.EPackage; |
| import org.eclipse.emf.ecore.impl.EPackageRegistryImpl; |
| import org.eclipse.emf.ecore.plugin.EcorePlugin; |
| import org.eclipse.emf.ecore.resource.Resource; |
| import org.eclipse.emf.ecore.resource.impl.ResourceSetImpl; |
| import org.eclipse.jdt.core.IJavaProject; |
| import org.eclipse.jdt.core.JavaCore; |
| |
| /** |
| * The purpose is to handle ecore models from the workspace as well as runtime |
| * ones. |
| * |
| * TODO Une fois terminée, cette classe devrait pltot se trouver dans core ou |
| * platform <br> |
| * TODO revoir l'utilisation de ProjectClassLoaderHelper <br> |
| * |
| * @author Thomas Guiu |
| * |
| */ |
| public class EPackageHelper { |
| |
| public static final String INSTANCE_FIELD_NAME = "eINSTANCE"; //$NON-NLS-1$ |
| |
| public static final EPackage.Registry REGISTRY = new EPackageRegistryImpl(EPackage.Registry.INSTANCE); |
| |
| private static final Map<String, String> nsuri2basePackage = new HashMap<String, String>(); |
| |
| private static EPackage getTopEPackage(EPackage ePackage) { |
| if (ePackage.getESuperPackage() != null) |
| return getTopEPackage(ePackage.getESuperPackage()); |
| return ePackage; |
| } |
| |
| public static String getBasePackage(EPackage ePackage) { |
| String name = nsuri2basePackage.get(ePackage.getNsURI()); |
| if (name != null) |
| return name; |
| String nsUri = getTopEPackage(ePackage).getNsURI(); |
| URI uri = EcorePlugin.getEPackageNsURIToGenModelLocationMap().get(nsUri); |
| Resource res = loadResource(uri); |
| for (EObject obj : res.getContents()) { |
| if (obj instanceof GenModel) { |
| GenModel genModel = (GenModel) obj; |
| for (GenPackage gPack : genModel.getAllGenPackagesWithClassifiers()) { |
| EPackage ecorePackage = gPack.getEcorePackage(); |
| if (ePackage.getName().equals(ecorePackage.getName()) && ePackage.getNsPrefix().equals(ecorePackage.getNsPrefix()) && ePackage.getNsURI().equals(ecorePackage.getNsURI())) { |
| String basePackageName = gPack.getInterfacePackageName(); |
| nsuri2basePackage.put(ePackage.getNsURI(), basePackageName); |
| return basePackageName; |
| } |
| } |
| } |
| } |
| |
| return null; |
| } |
| |
| public static void unregisterPackage(IProject project, String classname) throws RegistrationException { |
| try { |
| IJavaProject javaProject = JavaCore.create(project); |
| if (javaProject.exists()) { |
| Class<?> loadClass = JavaHelper.getProjectClassLoader(javaProject).loadClass(classname); |
| Field declaredField = loadClass.getDeclaredField(INSTANCE_FIELD_NAME); |
| EPackage ePackage = (EPackage) declaredField.get(null); |
| String nsURI = ePackage.getNsURI(); |
| removePackage2registry(ePackage); |
| nsuri2basePackage.remove(nsURI); |
| } |
| } catch (Exception e) { |
| throw new RegistrationException(Messages.bind(Messages.registration_error2, classname, project.getName()), e); |
| } |
| } |
| |
| /** |
| * This method will be used by the workspace resource listener |
| */ |
| public static void registerPackage(IProject project, String classname) throws RegistrationException { |
| try { |
| IJavaProject javaProject = JavaCore.create(project); |
| if (javaProject.exists()) { |
| Class<?> loadClass = JavaHelper.getProjectClassLoader(javaProject).loadClass(classname); |
| Field declaredField = loadClass.getDeclaredField(INSTANCE_FIELD_NAME); |
| EPackage ePackage = (EPackage) declaredField.get(null); |
| String nsURI = ePackage.getNsURI(); |
| addPackage2registry(ePackage); |
| // computing basePackage |
| int index = classname.lastIndexOf("."); //$NON-NLS-1$ |
| if (index == -1) { |
| throw new IllegalStateException(); |
| } |
| if (index == 0) { |
| nsuri2basePackage.put(nsURI, ""); //$NON-NLS-1$ |
| } else { |
| // to remove the last dot |
| nsuri2basePackage.put(nsURI, classname.substring(0, index)); |
| } |
| } |
| } catch (Exception e) { |
| throw new RegistrationException(Messages.bind(Messages.registration_error2, classname, project.getName()), e); |
| } |
| } |
| |
| private static void addPackage2registry(EPackage ePackage) { |
| String nsURI = ePackage.getNsURI(); |
| REGISTRY.put(nsURI, new Descriptor(ePackage)); |
| for (EPackage child : ePackage.getESubpackages()) |
| addPackage2registry(child); |
| } |
| |
| private static void removePackage2registry(EPackage ePackage) { |
| String nsURI = ePackage.getNsURI(); |
| REGISTRY.remove(nsURI); |
| for (EPackage child : ePackage.getESubpackages()) |
| removePackage2registry(child); |
| } |
| |
| public static class RegistrationException extends Exception { |
| private static final long serialVersionUID = 1L; |
| |
| private RegistrationException(String message, Throwable cause) { |
| super(message, cause); |
| } |
| } |
| |
| private static Resource loadResource(URI uri) { |
| // TODO it may be interesting to keep loaded resources for future |
| // uses ... however, workspace resources may change. |
| ResourceSetImpl set = new ResourceSetImpl(); |
| Resource res = ResourceHelper.loadResource(set, uri); |
| return res; |
| } |
| |
| private static class Descriptor implements EPackage.Descriptor { |
| |
| private EPackage epackage; |
| |
| public Descriptor(EPackage ePackage) { |
| super(); |
| this.epackage = ePackage; |
| } |
| |
| public EFactory getEFactory() { |
| return epackage.getEFactoryInstance(); |
| } |
| |
| public EPackage getEPackage() { |
| return epackage; |
| } |
| |
| } |
| |
| } |