ApplicationContextUtils.java

/*
 * Copyright (C) 2009-2012 Open Wide
 * Contact: contact@openwide.fr
 * 
 * Large portions Copyright Apache Software Foundation
 * 
 * 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 fr.openwide.core.spring.util.context;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.ApplicationContext;

/**
 * Utilitaire permettant d'accéder de manière statique à l'ApplicationContext 
 * en utilisant ApplicationContextUtils.getContext();
 * 
 * -> A n'utiliser que quand on ne peut pas faire autrement... privilégier l'injection de l'ApplicationContext quand
 * c'est possible.
 * 
 * L'applicationContext doit être préalablement renseigné par Spring en Java Config de la manière suivante :
 * @Bean
 * public ApplicationContextUtils applicationContextUtils() {
 *     return ApplicationContextUtils.getInstance();
 * }
 * ou en xml de la manière suivante :
 * <bean class="fr.openwide.core.spring.util.context.ApplicationContextUtils" factory-method="getInstance" />
 *
 */
public final class ApplicationContextUtils {

	private static final ApplicationContextUtils INSTANCE = new ApplicationContextUtils();

	@Autowired
	private ApplicationContext applicationContext;

	public static ApplicationContext getContext() {
		return INSTANCE.applicationContext;
	};

	public static ApplicationContextUtils getInstance() {
		return INSTANCE;
	}

	private ApplicationContextUtils() {}

}