| /******************************************************************************* |
| * Copyright (c) 2001, 2004 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 |
| * Jens Lukowski/Innoopract - initial renaming/restructuring |
| * |
| *******************************************************************************/ |
| package org.eclipse.wst.sse.core.internal.modelhandler; |
| |
| import java.util.Set; |
| |
| import org.eclipse.core.runtime.IConfigurationElement; |
| import org.eclipse.core.runtime.IExtensionPoint; |
| import org.eclipse.core.runtime.IExtensionRegistry; |
| import org.eclipse.core.runtime.Platform; |
| import org.eclipse.wst.sse.core.internal.Logger; |
| import org.eclipse.wst.sse.core.internal.ltk.modelhandler.EmbeddedTypeHandler; |
| import org.eclipse.wst.sse.core.internal.util.Assert; |
| |
| |
| public class EmbeddedTypeRegistryReader { |
| protected String ATT_CLASS = "class"; //$NON-NLS-1$ |
| protected String EXTENSION_POINT_ID = "embeddedTypeHandler"; //$NON-NLS-1$ |
| |
| |
| protected String PLUGIN_ID = "org.eclipse.wst.sse.core"; //$NON-NLS-1$ |
| protected String TAG_NAME = "embeddedTypeHandler"; //$NON-NLS-1$ |
| |
| EmbeddedTypeRegistryReader() { |
| super(); |
| } |
| |
| protected EmbeddedTypeHandler readElement(IConfigurationElement element) { |
| |
| EmbeddedTypeHandler contentTypeDescription = null; |
| if (element.getName().equals(TAG_NAME)) { |
| try { |
| contentTypeDescription = (EmbeddedTypeHandler) element.createExecutableExtension(ATT_CLASS); |
| } catch (Exception e) { |
| Logger.logException(e); |
| } |
| } |
| Assert.isNotNull(contentTypeDescription, "Error reading content type description"); //$NON-NLS-1$ |
| return contentTypeDescription; |
| } |
| |
| /** |
| * We simply require an 'add' method, of what ever it is we are to read |
| * into |
| */ |
| void readRegistry(Set set) { |
| IExtensionRegistry extensionRegistry = Platform.getExtensionRegistry(); |
| IExtensionPoint point = extensionRegistry.getExtensionPoint(PLUGIN_ID, EXTENSION_POINT_ID); |
| if (point != null) { |
| IConfigurationElement[] elements = point.getConfigurationElements(); |
| for (int i = 0; i < elements.length; i++) { |
| EmbeddedTypeHandler embeddedContentType = readElement(elements[i]); |
| // null can be returned if there's an error reading the |
| // element |
| if (embeddedContentType != null) { |
| set.add(embeddedContentType); |
| } |
| } |
| } |
| } |
| } |