| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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.geronimo.gshell.wisdom.registry; |
| |
| import org.apache.geronimo.gshell.command.Command; |
| import org.apache.geronimo.gshell.event.EventPublisher; |
| import org.apache.geronimo.gshell.registry.CommandRegistry; |
| import org.apache.geronimo.gshell.registry.DuplicateCommandException; |
| import org.apache.geronimo.gshell.registry.NoSuchCommandException; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import java.util.Collection; |
| import java.util.Collections; |
| import java.util.LinkedHashMap; |
| import java.util.Map; |
| |
| /** |
| * {@link CommandRegistry} component. |
| * |
| * @version $Rev$ $Date$ |
| */ |
| public class CommandRegistryImpl |
| implements CommandRegistry |
| { |
| private final Logger log = LoggerFactory.getLogger(getClass()); |
| |
| private final EventPublisher eventPublisher; |
| |
| private final Map<String,Command> commands = new LinkedHashMap<String,Command>(); |
| |
| public CommandRegistryImpl(final EventPublisher eventPublisher) { |
| assert eventPublisher != null; |
| this.eventPublisher = eventPublisher; |
| } |
| |
| public void registerCommand(final Command command) throws DuplicateCommandException { |
| assert command != null; |
| |
| String name = command.getLocation().getFullPath(); |
| |
| log.debug("Registering command: {} -> {}", name, command); |
| |
| if (containsCommand(name)) { |
| throw new DuplicateCommandException(name); |
| } |
| |
| commands.put(name, command); |
| |
| eventPublisher.publish(new CommandRegisteredEvent(name, command)); |
| } |
| |
| public void removeCommand(final Command command) throws NoSuchCommandException { |
| assert command != null; |
| |
| String name = command.getLocation().getFullPath(); |
| |
| log.debug("Removing command: {}", name); |
| |
| if (!containsCommand(name)) { |
| throw new NoSuchCommandException(name); |
| } |
| |
| commands.remove(name); |
| |
| eventPublisher.publish(new CommandRemovedEvent(name)); |
| } |
| |
| public Command getCommand(final String name) throws NoSuchCommandException { |
| assert name != null; |
| |
| if (!containsCommand(name)) { |
| throw new NoSuchCommandException(name); |
| } |
| |
| return commands.get(name); |
| } |
| |
| public boolean containsCommand(final String name) { |
| assert name != null; |
| |
| return commands.containsKey(name); |
| } |
| |
| public Collection<String> getCommandNames() { |
| return Collections.unmodifiableSet(commands.keySet()); |
| } |
| } |