org.lexevs.tree.service.ApplicationContextFactory.java Source code

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Here is the source code for org.lexevs.tree.service.ApplicationContextFactory.java

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/*
 * Copyright: (c) 2004-2009 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 Eclipse Public License, Version 1.0 (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.eclipse.org/legal/epl-v10.html
 * 
 */
package org.lexevs.tree.service;

import java.io.InputStream;
import java.io.Serializable;

import org.lexevs.system.utility.MyClassLoader;
import org.springframework.beans.factory.xml.XmlBeanDefinitionReader;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.GenericApplicationContext;
import org.springframework.core.io.InputStreamResource;

/**
 * A factory for creating ApplicationContext objects.
 */
public class ApplicationContextFactory implements Serializable {

    /** The Constant serialVersionUID. */
    private static final long serialVersionUID = -5794966638343867430L;

    /** The instance. */
    private static ApplicationContextFactory instance;

    /** The context. */
    private ApplicationContext context;

    /**
     * Gets the single instance of ApplicationContextFactory.
     * 
     * @return single instance of ApplicationContextFactory
     */
    public static synchronized ApplicationContextFactory getInstance() {
        if (instance == null) {
            instance = new ApplicationContextFactory();
        }
        return instance;
    }

    /**
     * Instantiates a new application context factory.
     */
    protected ApplicationContextFactory() {
        GenericApplicationContext ctx = new GenericApplicationContext();
        ctx.setClassLoader(MyClassLoader.instance());
        XmlBeanDefinitionReader xmlReader = new XmlBeanDefinitionReader(ctx);
        xmlReader.setValidationMode(XmlBeanDefinitionReader.VALIDATION_NONE);
        InputStream stream = MyClassLoader.instance().getResourceAsStream("treeServiceContext.xml");
        xmlReader.loadBeanDefinitions(new InputStreamResource(stream));
        ctx.refresh();

        this.context = ctx;
    }

    /**
     * Gets the application context.
     * 
     * @return the application context
     */
    public ApplicationContext getApplicationContext() {
        return this.context;
    }
}