/*
* 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;
}
}