/* * Copyright 1999-2012 Alibaba Group. * * 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 com.alibaba.dubbo.config.spring.extension; import java.util.Set; import org.springframework.context.ApplicationContext; import com.alibaba.dubbo.common.extension.ExtensionFactory; import com.alibaba.dubbo.common.utils.ConcurrentHashSet; /** * SpringExtensionFactory * * @author william.liangf */ public class SpringExtensionFactory implements ExtensionFactory { private static final Set<ApplicationContext> contexts = new ConcurrentHashSet<ApplicationContext>(); public static void addApplicationContext(ApplicationContext context) { contexts.add(context); } public static void removeApplicationContext(ApplicationContext context) { contexts.remove(context); } @SuppressWarnings("unchecked") public <T> T getExtension(Class<T> type, String name) { for (ApplicationContext context : contexts) { if (context.containsBean(name)) { Object bean = context.getBean(name); if (type.isInstance(bean)) { return (T) bean; } } } return null; } }