net.sf.appstatus.support.spring.SpringObjectInstantiationListener.java Source code

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Here is the source code for net.sf.appstatus.support.spring.SpringObjectInstantiationListener.java

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/*
 * Copyright 2010 Capgemini
 * 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 net.sf.appstatus.support.spring;

import net.sf.appstatus.core.IObjectInstantiationListener;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;

/**
 * 
 * Spring-aware instantiation listener for web applications.
 * 
 * @author Nicolas Richeton
 * 
 */
public class SpringObjectInstantiationListener implements IObjectInstantiationListener, ApplicationContextAware {
    private static Logger logger = LoggerFactory.getLogger(SpringObjectInstantiationListener.class);

    ApplicationContext applicationContext;

    /**
     * Constructor.
     * 
     * @param context
     *            Current servlet context.
     */
    public SpringObjectInstantiationListener() {
    }

    public Object getInstance(String className) {
        Object obj = null;

        try {
            obj = applicationContext.getBean(className);
        } catch (BeansException e) {
            logger.info("Unable to get Bean {}", e, className);
        }

        return obj;
    }

    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
        this.applicationContext = applicationContext;
    }

}