ApplicationContextHolder.java

/*
 * Copyright 2010-2011 the original author or authors.
 *
 * 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.googlecode.starflow.core.util;

import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;

/**
 * 
 * @author libinsong1204@gmail.com
 * @version 1.0
 */
public class ApplicationContextHolder implements ApplicationContextAware {
	private static ApplicationContext context;

	@Override
	public void setApplicationContext(ApplicationContext applicationContext)
			throws BeansException {
		context = applicationContext;
	}

	public static void setAppContext(
			ApplicationContext applicationContext) {
		context = applicationContext;
	}

	public static ApplicationContext getApplicationContext() {
		return context;
	}

	public static Object getBean(String name) {
		return getApplicationContext().getBean(name);
	}
	
	public static <T> T getBean(String name, Class<T> requiredType) {
		return getApplicationContext().getBean(name, requiredType);
	}
	
	public static <T> T getBean(Class<T> clazz) {
		return getApplicationContext().getBean(clazz);
	}
    
    public static boolean containsBean(String beanName) {
    	return getApplicationContext().containsBean(beanName);
    }
}