| /******************************************************************************* |
| * Copyright (c) 2001, 2005 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 API and implementation |
| *******************************************************************************/ |
| /* |
| * Created on Oct 29, 2003 |
| * |
| * To change the template for this generated file go to |
| * Window>Preferences>Java>Code Generation>Code and Comments |
| */ |
| package org.eclipse.jst.j2ee.core.internal.plugin; |
| |
| import java.util.SortedSet; |
| import java.util.TreeSet; |
| |
| import org.eclipse.core.runtime.CoreException; |
| import org.eclipse.core.runtime.IConfigurationElement; |
| import org.eclipse.jem.util.RegistryReader; |
| import org.eclipse.jem.util.logger.proxy.Logger; |
| import org.eclipse.jst.j2ee.internal.EjbModuleExtensionHelper; |
| import org.eclipse.jst.j2ee.internal.IEJBModelExtenderProvider; |
| import org.eclipse.wst.common.frameworks.internal.enablement.Identifiable; |
| import org.eclipse.wst.common.frameworks.internal.enablement.IdentifiableComparator; |
| |
| /** |
| * To change the template for this generated type comment go to |
| * Window>Preferences>Java>Code Generation>Code and Comments |
| */ |
| public class EclipseEJBModelExtenderProvider extends RegistryReader implements IEJBModelExtenderProvider { |
| |
| private SortedSet extensionHelpers; |
| |
| /* |
| * static final String EXTENSION_NAME = "e"; //$NON-NLS-1$ static final |
| * String ELEMENT_J2EEMODULE_EXTENSION = "j2eeModuleExtensionHelper"; |
| * //$NON-NLS-1$ static final String MODULE_EXTENSION_CLASS = |
| * "extensionClass"; //$NON-NLS-1$ |
| */ |
| |
| private static EclipseEJBModelExtenderProvider INSTANCE = null; |
| |
| public static class Descriptor implements Identifiable { |
| |
| public static final String EJB_MODEL_EXTENDER = "ejbModelExtender"; //$NON-NLS-1$ |
| |
| public static final String ATT_ID = "id"; //$NON-NLS-1$ |
| |
| public static final String ATT_EJB_EXTENSION_CLASS = "extensionClass"; //$NON-NLS-1$ |
| |
| private static int loadOrderCounter = 0; |
| |
| private final String id; |
| |
| private final int loadOrder; |
| |
| private IConfigurationElement element; |
| |
| private EjbModuleExtensionHelper instance; |
| |
| public Descriptor(IConfigurationElement element) { |
| Assert.isLegal(EJB_MODEL_EXTENDER.equals(element.getName()), |
| "Invalid IConfigurationElement used to create EclipseEJBModelExtenderProvider.Descriptor."); //$NON-NLS-1$ |
| this.element = element; |
| this.id = this.element.getAttribute(ATT_ID); |
| this.loadOrder = loadOrderCounter++; |
| } |
| |
| public String getID() { |
| return this.id; |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.wst.common.frameworks.internal.enablement.Identifiable#getLoadOrder() |
| */ |
| public int getLoadOrder() { |
| return loadOrder; |
| } |
| |
| public EjbModuleExtensionHelper getInstance() { |
| try { |
| if (instance == null) |
| instance = (EjbModuleExtensionHelper) element |
| .createExecutableExtension(ATT_EJB_EXTENSION_CLASS); |
| } catch (CoreException e) { |
| Logger.getLogger().logError(e); |
| } |
| return instance; |
| } |
| } |
| |
| protected EclipseEJBModelExtenderProvider() { |
| super(J2EECorePlugin.PLUGIN_ID, Descriptor.EJB_MODEL_EXTENDER); |
| } |
| |
| public static EclipseEJBModelExtenderProvider getInstance() { |
| if (INSTANCE == null) { |
| INSTANCE = new EclipseEJBModelExtenderProvider(); |
| INSTANCE.readRegistry(); |
| } |
| return INSTANCE; |
| } |
| |
| /** |
| * readElement() - parse and deal w/ an extension like: <earModuleExtension |
| * extensionClass = "com.ibm.etools.web.plugin.WebModuleExtensionImpl"/> |
| */ |
| public boolean readElement(IConfigurationElement element) { |
| if (!element.getName().equals(Descriptor.EJB_MODEL_EXTENDER)) return false; |
| |
| addModuleExtension(new Descriptor(element)); |
| return true; |
| } |
| |
| /** |
| * @param descriptor |
| */ |
| private void addModuleExtension(Descriptor descriptor) { |
| getExtensionHelpers().add(descriptor); |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.jst.j2ee.internal.core.moduleextension.helper.IEJBModelExtenderProvider#getEJBModuleExtension(java.lang.Object) |
| */ |
| public EjbModuleExtensionHelper getEJBModuleExtension(Object context) { |
| //IProject project = null; // TODO MDE Get the project using Project Utilities (add depend to emf.workbench ?) |
| if (getExtensionHelpers().isEmpty()) |
| return null; |
| Descriptor descriptor = (Descriptor) getExtensionHelpers().first(); |
| if(descriptor != null) |
| return descriptor.getInstance(); |
| return null; |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.jst.j2ee.internal.core.moduleextension.helper.IEJBModelExtenderProvider#hasEJBModuleExtension(java.lang.Object) |
| */ |
| public boolean hasEJBModuleExtension(Object context) { |
| return false; |
| } |
| |
| /** |
| * @return Returns the extensionHelpers. |
| */ |
| protected SortedSet getExtensionHelpers() { |
| if (extensionHelpers == null) extensionHelpers = new TreeSet(IdentifiableComparator.getInstance()); |
| return extensionHelpers; |
| } |
| } |