it.doqui.index.ecmengine.business.startup.jboss.EcmContextLoader.java Source code

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Here is the source code for it.doqui.index.ecmengine.business.startup.jboss.EcmContextLoader.java

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/* Index ECM Engine - A system for managing the capture (when created
 * or received), classification (cataloguing), storage, retrieval,
 * revision, sharing, reuse and disposition of documents.
 *
 * Copyright (C) 2008 Regione Piemonte
 * Copyright (C) 2008 Provincia di Torino
 * Copyright (C) 2008 Comune di Torino
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2,
 * or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 *
 */

package it.doqui.index.ecmengine.business.startup.jboss;

import org.springframework.web.context.ContextLoader;
import org.springframework.web.context.WebApplicationContext;
import org.springframework.web.context.ConfigurableWebApplicationContext;

//import java.io.IOException;
//import java.util.Properties;

import javax.servlet.ServletContext;

//import org.apache.commons.logging.Log;
//import org.apache.commons.logging.LogFactory;

//import org.springframework.beans.BeanUtils;
import org.springframework.beans.BeansException;
//import org.springframework.beans.factory.access.BeanFactoryLocator;
//import org.springframework.beans.factory.access.BeanFactoryReference;
import org.springframework.context.ApplicationContext;
//import org.springframework.context.ApplicationContextException;
//import org.springframework.context.access.ContextSingletonBeanFactoryLocator;
//import org.springframework.core.io.ClassPathResource;
//import org.springframework.core.io.support.PropertiesLoaderUtils;
//import org.springframework.util.ClassUtils;
//import org.springframework.util.StringUtils;
import org.springframework.web.context.support.XmlWebApplicationContext;

/**
 * Performs the actual initialization work for the root application context.
 * Called by ContextLoaderListener and ContextLoaderServlet.
 *
 * <p>Looks for a "contextClass" parameter at the web.xml context-param level
 * to specify the context class type, falling back to the default of
 * {@link XmlWebApplicationContext} if not found. With the default ContextLoader
 * implementation, any context class specified needs to implement
 * ConfigurableWebApplicationContext.
 *
 * <p>Passes a "contextConfigLocation" context-param to the context instance,
 * parsing it into potentially multiple file paths which can be separated by
 * any number of commas and spaces, like "applicationContext1.xml,
 * applicationContext2.xml". If not explicitly specified, the context
 * implementation is supposed to use a default location (with
 * XmlWebApplicationContext: "/WEB-INF/applicationContext.xml").
 *
 * <p>Note: In case of multiple config locations, later bean definitions will
 * override ones defined in earlier loaded files, at least when using one of
 * Spring's default ApplicationContext implementations. This can be leveraged
 * to deliberately override certain bean definitions via an extra XML file.
 *
 * <p>Above and beyond loading the root application context, this class can
 * optionally load or obtain and hook up a shared parent context to the root
 * application context. See the
 * {@link #loadParentContext(ServletContext)} method for more information.
 *
 * @author Juergen Hoeller
 * @author Colin Sampaleanu
 * @since 17.02.2003
 * @see ContextLoaderListener
 * @see ContextLoaderServlet
 * @see ConfigurableWebApplicationContext
 * @see org.springframework.web.context.support.XmlWebApplicationContext
 */
public class EcmContextLoader extends ContextLoader {

    /**
     * Instantiate the root WebApplicationContext for this loader, either the
     * default context class or a custom context class if specified.
     * <p>This implementation expects custom contexts to implement
     * ConfigurableWebApplicationContext. Can be overridden in subclasses.
     * @param servletContext current servlet context
     * @param parent the parent ApplicationContext to use, or <code>null</code> if none
     * @return the root WebApplicationContext
     * @throws BeansException if the context couldn't be initialized
     * @see ConfigurableWebApplicationContext
     */
    protected WebApplicationContext createWebApplicationContext(ServletContext servletContext,
            ApplicationContext parent) throws BeansException {

        // Reuse the same EcmWebApplicationContext
        EcmWebApplicationContext wac = (EcmWebApplicationContext) parent;

        // Increase instanceCount
        wac.notifyNewInstance();

        // Asseign servletContext
        wac.setServletContext(servletContext);

        // Return wac
        return wac;
    }

}