| /* |
| * 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.lenya.cms.usecase.impl; |
| |
| import java.util.Iterator; |
| import java.util.SortedSet; |
| import java.util.TreeSet; |
| |
| import org.apache.avalon.framework.activity.Startable; |
| import org.apache.avalon.framework.configuration.Configuration; |
| import org.apache.avalon.framework.configuration.ConfigurationException; |
| import org.apache.avalon.framework.service.ServiceException; |
| import org.apache.avalon.framework.service.ServiceManager; |
| import org.apache.avalon.framework.service.Serviceable; |
| import org.apache.avalon.framework.thread.ThreadSafe; |
| import org.apache.cocoon.components.ExtendedComponentSelector; |
| import org.apache.lenya.cms.usecase.UsecaseResolver; |
| |
| /** |
| * Usecase selector. |
| */ |
| public class UsecaseSelector extends ExtendedComponentSelector implements ThreadSafe, Startable, Serviceable { |
| |
| private SortedSet usecaseNames; |
| private ServiceManager manager; |
| |
| /** |
| * @return The names of all registered usecases in alphabetical order. |
| */ |
| public String[] getUsecaseNames() { |
| return (String[]) this.usecaseNames.toArray(new String[this.usecaseNames.size()]); |
| } |
| |
| public void configure(Configuration config) throws ConfigurationException { |
| super.configure(config); |
| |
| this.usecaseNames = new TreeSet(); |
| Configuration[] usecaseConfigs = config.getChildren("component-instance"); |
| for (int i = 0; i < usecaseConfigs.length; i++) { |
| this.usecaseNames.add(usecaseConfigs[i].getAttribute("name")); |
| } |
| } |
| |
| public void start() throws Exception { |
| UsecaseResolver resolver = null; |
| try { |
| resolver = (UsecaseResolver) this.manager.lookup(UsecaseResolver.ROLE); |
| for (Iterator i = this.usecaseNames.iterator(); i.hasNext(); ) { |
| resolver.register((String) i.next()); |
| } |
| } |
| finally { |
| if (resolver != null) { |
| this.manager.release(resolver); |
| } |
| } |
| } |
| |
| public void stop() throws Exception { |
| } |
| |
| public void service(ServiceManager manager) throws ServiceException { |
| this.manager = manager; |
| } |
| |
| } |