| /******************************************************************************* |
| * Copyright (c) 2001, 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 Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.wst.wsdl.ui.internal.extensions; |
| |
| import java.util.HashMap; |
| |
| import org.osgi.framework.Bundle; |
| |
| public class NSKeyedExtensionRegistry |
| { |
| protected HashMap map = new HashMap(); |
| private static final String PLUGIN_LOADING_ERROR = "PLUGIN_LOADING_ERROR"; //$NON-NLS-1$ |
| |
| public NSKeyedExtensionRegistry() |
| { |
| } |
| |
| public void put(String namespaceURI, String className, Bundle bundle) |
| { |
| ExtensionInfo info = (ExtensionInfo) map.get(namespaceURI); |
| if (info == null) |
| { |
| info = new SinglePropertyExtensionInfo(className, bundle); |
| map.put(namespaceURI, info); |
| } |
| } |
| |
| public void put(String namespaceURI, HashMap propertyToClassNameMap, Bundle bundle) |
| { |
| ExtensionInfo info = (ExtensionInfo) map.get(namespaceURI); |
| if (info == null) |
| { |
| info = new MultiPropertyExtensionInfo(propertyToClassNameMap, bundle); |
| map.put(namespaceURI, info); |
| } |
| } |
| |
| /** |
| * |
| * @deprecated |
| */ |
| public Object get(String namespaceURI) |
| { |
| ExtensionInfo info = (ExtensionInfo) map.get(namespaceURI); |
| return info != null ? info.getObject("") : null; //$NON-NLS-1$ |
| } |
| |
| public Object getProperty(String namespaceURI, String property) |
| { |
| ExtensionInfo info = (ExtensionInfo) map.get(namespaceURI); |
| return info != null ? info.getObject(property) : null; |
| } |
| |
| private abstract class ExtensionInfo |
| { |
| protected Bundle bundle; |
| |
| public ExtensionInfo(Bundle bundle) |
| { |
| this.bundle = bundle; |
| } |
| |
| public abstract Object getObject(String property); |
| } |
| |
| private class SinglePropertyExtensionInfo extends ExtensionInfo |
| { |
| protected String className; |
| protected Object object; |
| protected boolean error; |
| |
| public SinglePropertyExtensionInfo(String className, Bundle bundle) |
| { |
| super(bundle); |
| this.className = className; |
| } |
| |
| public Object getObject(String property) |
| { |
| if (object == null) |
| { |
| try |
| { |
| Class theClass = bundle.loadClass(className); |
| object = theClass.newInstance(); |
| } |
| catch (Exception e) |
| { |
| object = PLUGIN_LOADING_ERROR; |
| e.printStackTrace(); |
| } |
| } |
| return object != PLUGIN_LOADING_ERROR ? object : null; |
| } |
| } |
| |
| private class MultiPropertyExtensionInfo extends ExtensionInfo |
| { |
| protected HashMap propertyToClassNameTable; |
| protected HashMap propertyToObjectTable = new HashMap(); |
| |
| public MultiPropertyExtensionInfo(HashMap propertToClassNameTable, Bundle bundle) |
| { |
| super(bundle); |
| this.propertyToClassNameTable = propertToClassNameTable; |
| } |
| |
| public Object getObject(String property) |
| { |
| Object result = null; |
| String className = (String) propertyToClassNameTable.get(property); |
| if (className != null) |
| { |
| result = propertyToObjectTable.get(property); |
| if (result == null) |
| { |
| try |
| { |
| Class theClass = bundle.loadClass(className); |
| result = theClass.newInstance(); |
| propertyToObjectTable.put(property, result); |
| } |
| catch (Exception e) |
| { |
| propertyToObjectTable.put(property, PLUGIN_LOADING_ERROR); |
| result = PLUGIN_LOADING_ERROR; |
| e.printStackTrace(); |
| } |
| } |
| } |
| return result != PLUGIN_LOADING_ERROR ? result : null; |
| } |
| } |
| } |