SpringApplicationContext.java

/**
 * Copyright 2008 The University of North Carolina at Chapel Hill
 *
 * 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 edu.unc.lib.dl.security;

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

public class SpringApplicationContext implements ApplicationContextAware {

	  private static ApplicationContext CONTEXT;

	  /**
	   * This method is called from within the ApplicationContext once it is 
	   * done starting up, it will stick a reference to itself into this bean.
	   * @param context a reference to the ApplicationContext.
	   */
	  public void setApplicationContext(ApplicationContext context) throws BeansException {
	    CONTEXT = context;
	  }

	  /**
	   * This is about the same as context.getBean("beanName"), except it has its
	   * own static handle to the Spring context, so calling this method statically
	   * will give access to the beans by name in the Spring application context.
	   * As in the context.getBean("beanName") call, the caller must cast to the
	   * appropriate target class. If the bean does not exist, then a Runtime error
	   * will be thrown.
	   * @param beanName the name of the bean to get.
	   * @return an Object reference to the named bean.
	   */
	  public static Object getBean(String beanName) {
	    return CONTEXT.getBean(beanName);
	  }
}