ConfigInitializerFactory.java

/*
 * Copyright: (c) 2004-2011 Mayo Foundation for Medical Education and 
 * Research (MFMER). All rights reserved. MAYO, MAYO CLINIC, and the
 * triple-shield Mayo logo are trademarks and service marks of MFMER.
 *
 * Except as contained in the copyright notice above, or as used to identify 
 * MFMER as the author of this software, the trade names, trademarks, service
 * marks, or product names of the copyright holder shall not be used in
 * advertising, promotion or otherwise in connection with this software without
 * prior written authorization of the copyright holder.
 *
 * 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.mayo.cts2.framework.core.config;

import java.util.Hashtable;

import javax.naming.Context;
import javax.naming.Name;
import javax.naming.spi.ObjectFactory;
import javax.servlet.ServletContextEvent;
import javax.servlet.ServletContextListener;

import org.apache.commons.lang.StringUtils;

/**
 * A factory for creating Cts2Config objects.
 *
 * @author <a href="mailto:kevin.peterson@mayo.edu">Kevin Peterson</a>
 */
public class ConfigInitializerFactory implements ObjectFactory, ServletContextListener {

	/* (non-Javadoc)
	 * @see javax.naming.spi.ObjectFactory#getObjectInstance(java.lang.Object, javax.naming.Name, javax.naming.Context, java.util.Hashtable)
	 */
	public Object getObjectInstance(
			Object obj, 
			Name name, 
			Context nameCtx,
			Hashtable<?, ?> environment) throws Exception {
		return ConfigInitializer.instance();
	}

	/* (non-Javadoc)
	 * @see javax.servlet.ServletContextListener#contextInitialized(javax.servlet.ServletContextEvent)
	 */
	public void contextInitialized(ServletContextEvent sce){
		try {
			ConfigInitializer.initialize(StringUtils.removeStart(sce.getServletContext().getContextPath(), "/"));
		} catch (Cts2ConfigAlreadyInitializedException e) {
			throw new IllegalStateException(e);
		}
	}

	/* (non-Javadoc)
	 * @see javax.servlet.ServletContextListener#contextDestroyed(javax.servlet.ServletContextEvent)
	 */
	public void contextDestroyed(ServletContextEvent sce) {
		//
	}

}