| /** |
| * <copyright> |
| * |
| * Copyright (c) 2002-2006 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 - Initial API and implementation |
| * |
| * </copyright> |
| * |
| * $Id: StandardLibraryRegistryReader.java,v 1.2 2011/01/24 20:42:33 ewillink Exp $ |
| */ |
| package org.eclipse.ocl.examples.pivot.library; |
| |
| import org.eclipse.core.runtime.IConfigurationElement; |
| import org.eclipse.core.runtime.Platform; |
| import org.eclipse.emf.ecore.plugin.EcorePlugin; |
| import org.eclipse.emf.ecore.plugin.RegistryReader; |
| import org.eclipse.ocl.examples.pivot.util.PivotPlugin; |
| |
| /** |
| * A plugin extension reader that populates the |
| * {@link org.eclipse.emf.ecore.resource.Resource.Factory.Registry#INSTANCE |
| * global} resource factory's |
| * {@link org.eclipse.emf.ecore.resource.Resource.Factory.Registry#getProtocolToFactoryMap() |
| * protocol} map. Clients are not expected to use this class directly. |
| */ |
| public class StandardLibraryRegistryReader extends RegistryReader |
| { |
| static final String TAG_LIBRARY = "library"; |
| static final String ATT_URI = "uri"; |
| static final String ATT_CLASS = "class"; |
| |
| public StandardLibraryRegistryReader() { |
| super(Platform.getExtensionRegistry(), PivotPlugin.getPlugin() |
| .getBundle().getSymbolicName(), PivotPlugin.STANDARD_LIBRARY_PPID); |
| } |
| |
| @Override |
| protected boolean readElement(IConfigurationElement element, boolean add) { |
| if (element.getName().equals(TAG_LIBRARY)) { |
| String uri = element.getAttribute(ATT_URI); |
| if (uri == null) { |
| logMissingAttribute(element, ATT_URI); |
| } else if (element.getAttribute(ATT_CLASS) == null) { |
| logMissingAttribute(element, ATT_CLASS); |
| } else if (add) { |
| Object previous = StandardLibraryContribution.REGISTRY |
| .put(uri, new StandardLibraryContribution.Descriptor(element, ATT_CLASS)); |
| if (previous instanceof StandardLibraryContribution.Descriptor) { |
| StandardLibraryContribution.Descriptor descriptor = (StandardLibraryContribution.Descriptor) previous; |
| EcorePlugin.INSTANCE.log("Both '" |
| + descriptor.getElement().getContributor().getName() |
| + "' and '" + element.getContributor().getName() |
| + "' register a setting delegate factory for '" + uri |
| + "'"); |
| } |
| return true; |
| } else { |
| StandardLibraryContribution.REGISTRY.remove(uri); |
| return true; |
| } |
| } |
| return false; |
| } |
| } |