| /** |
| * |
| * Copyright 2005-2006 The Apache Software Foundation or its licensors, as applicable. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.xbean.command; |
| |
| import java.util.HashMap; |
| import java.util.Iterator; |
| import java.util.Map; |
| |
| public class CommandRegistry { |
| |
| protected static final HashMap commands = new HashMap(); |
| |
| static { |
| loadCommandList(); |
| } |
| |
| protected static final CommandRegistry unknownCommand = new CommandRegistry(); |
| |
| public static Map getCommandMap() { |
| HashMap rc = new HashMap(); |
| for (Iterator iter = commands.keySet().iterator(); iter.hasNext();) { |
| String name = (String) iter.next(); |
| Command command = getCommand(name); |
| rc.put(name, command); |
| } |
| return rc; |
| } |
| |
| public static void register(String name, Command cmd) { |
| commands.put(name, cmd); |
| } |
| |
| public static void register(String name, Class cmd) { |
| commands.put(name, cmd); |
| } |
| |
| public static Command getCommand(String name) { |
| Object cmd = commands.get(name); |
| if (cmd instanceof Class) { |
| cmd = loadCommand((Class) cmd); |
| register(name, (Command) cmd); |
| } |
| return (Command) cmd; |
| } |
| |
| |
| // - Protected methods - // |
| protected static Command loadCommand(Class commandClass) { |
| Command cmd = null; |
| try { |
| cmd = (Command) commandClass.newInstance(); |
| } catch (Exception e) { |
| //throw new IOException("Cannot instantiate command class "+commandClass+"\n"+e.getClass().getName()+":\n"+e.getMessage()); |
| } |
| return cmd; |
| } |
| |
| /** |
| * TODO: Replace this part with the classpath magic |
| */ |
| protected static void loadCommandList() { |
| Exit.register(); |
| Help.register(); |
| Lookup.register(); |
| Version.register(); |
| GroovySh.register(); |
| } |
| } |