com.alibaba.dubbo.config.spring.extension.SpringExtensionFactory Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of dubbo2 Show documentation

The all in one project of dubbo2

The newest version!

/*
 * 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 contexts = new ConcurrentHashSet();
    
    public static void addApplicationContext(ApplicationContext context) {
        contexts.add(context);
    }

    public static void removeApplicationContext(ApplicationContext context) {
        contexts.remove(context);
    }

    @SuppressWarnings("unchecked")
    public  T getExtension(Class 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;
    }

}