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Provides support for MVC frameworks.

There is a newer version: 2.1.12

package org.dd4t.mvc.utils;
/*
 * Copyright (c) 2015 R. Oudshoorn
 *
 * 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.
 */


//ApplicationContextProvider.java

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

/**
 * Wrapper to always return a reference to the Spring Application Context from
 * within non-Spring enabled beans. Unlike Spring MVC's WebApplicationContextUtils
 * we do not need a reference to the Servlet context for this. All we need is
 * for this bean to be initialized during application startup.
 *
 * @author Rogier Oudshoorn
 */
public class ApplicationContextProvider implements ApplicationContextAware {

    private static org.springframework.context.ApplicationContext applicationContext;

    /**
     * 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.
     */
    @Override
    public void setApplicationContext(org.springframework.context.ApplicationContext context) throws BeansException {
        applicationContext = 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 applicationContext.getBean(beanName);
    }

    /**
     * This is about the same as context.getBean(Class clazz)
     *
     * @param T
     * @return
     */
    public static  T getBean(Class T) {
        return (T) applicationContext.getBean(T);
    }
}