| //------------------------------------------------------------------------------ |
| // Copyright (c) 2005, 2007 IBM Corporation 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: |
| // IBM Corporation - initial implementation |
| //------------------------------------------------------------------------------ |
| package org.eclipse.epf.uma.ecore.util; |
| |
| import org.eclipse.core.runtime.IConfigurationElement; |
| import org.eclipse.core.runtime.IExtension; |
| import org.eclipse.core.runtime.IExtensionPoint; |
| import org.eclipse.core.runtime.IExtensionRegistry; |
| import org.eclipse.core.runtime.Platform; |
| import org.eclipse.emf.common.CommonPlugin; |
| import org.eclipse.emf.ecore.EObject; |
| import org.eclipse.emf.ecore.EStructuralFeature; |
| import org.osgi.framework.Bundle; |
| |
| /** |
| * @author Phong Nguyen Le |
| * @since 1.5 |
| * |
| */ |
| public class FeatureDelegate implements IFeatureDelegate { |
| public static Object createExtension(String namespace, String extensionPointName) { |
| // Process the contributors. |
| // |
| IExtensionRegistry extensionRegistry = Platform.getExtensionRegistry(); |
| IExtensionPoint extensionPoint = extensionRegistry.getExtensionPoint(namespace, extensionPointName); |
| if (extensionPoint != null) { |
| IExtension[] extensions = extensionPoint.getExtensions(); |
| Object ext = null; |
| ext_walk: |
| for (int i = 0; i < extensions.length; i++) { |
| IExtension extension = extensions[i]; |
| String pluginId = extension.getNamespaceIdentifier(); |
| Bundle bundle = Platform.getBundle(pluginId); |
| IConfigurationElement[] configElements = extension |
| .getConfigurationElements(); |
| for (int j = 0; j < configElements.length; j++) { |
| IConfigurationElement configElement = configElements[j]; |
| try { |
| String className = configElement.getAttribute("class"); //$NON-NLS-1$ |
| if(className != null) { |
| ext = bundle.loadClass(className).newInstance(); |
| break ext_walk; |
| } |
| } catch (Exception e) { |
| CommonPlugin.INSTANCE.log(e); |
| } |
| } |
| } |
| return ext; |
| } |
| return null; |
| } |
| |
| public static final IFeatureDelegate newInstance() { |
| Object ext = createExtension("org.eclipse.epf.uma.ecore", "featureDelegate"); //$NON-NLS-1$ //$NON-NLS-2$ |
| if(ext instanceof IFeatureDelegate) { |
| return (IFeatureDelegate) ext; |
| } |
| return new FeatureDelegate(); |
| } |
| |
| private FeatureDelegate() { |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.epf.uma.ecore.util.IFeatureDelegate#delegateGet(org.eclipse.emf.ecore.EObject, org.eclipse.emf.ecore.EStructuralFeature) |
| */ |
| public Object delegateGet(EObject object, EStructuralFeature feature) { |
| return null; |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.epf.uma.ecore.util.IFeatureDelegate#delegateSet(org.eclipse.emf.ecore.EObject, org.eclipse.emf.ecore.EStructuralFeature) |
| */ |
| public void delegateSet(EObject object, EStructuralFeature feature) { |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.epf.uma.ecore.util.IFeatureDelegate#isDelegated(org.eclipse.emf.ecore.EObject, org.eclipse.emf.ecore.EStructuralFeature) |
| */ |
| public boolean isDelegated(EObject object, EStructuralFeature feature) { |
| return false; |
| } |
| |
| } |