package org.thdl.lex;

import java.io.File;

import net.sf.hibernate.HibernateException;
import net.sf.hibernate.Session;
import net.sf.hibernate.SessionFactory;
import net.sf.hibernate.cfg.Configuration;

/**
 * Description of the Class
 * 
 * @author Hibernate WIKI
 * @created October 1, 2003
 */
public class HibernateSessionDataTransfer {

	private static SessionFactory sessionFactory;

	/**
	 * Description of the Field
	 */
	public final static ThreadLocal session = new ThreadLocal();

	/**
	 * Description of the Field
	 */
	public static File config;

	public static String configResource;

	public static void setConfigResource(String configResource) {
		HibernateSessionDataTransfer.configResource = configResource;
	}

	public static String getConfigResource() {
		return configResource;
	}

	/**
	 * Sets the config attribute of the HibernateSessionDataTransfer object
	 * 
	 * @param config
	 *            The new config value
	 */
	public static void setConfig(File config) {
		HibernateSessionDataTransfer.config = config;
	}

	/**
	 * Gets the config attribute of the HibernateSessionDataTransfer object
	 * 
	 * @return The config value
	 */
	public static File getConfig() {
		return config;
	}

	/**
	 * Description of the Method
	 * 
	 * @return Description of the Returned Value
	 * @exception HibernateException
	 *                Description of Exception
	 * @since
	 */
	public static Session currentSession() throws HibernateException {

		Session s = (Session) session.get();
		if (s == null) {

			// Don't get from JNDI, use a static SessionFactory
			if (sessionFactory == null) {

				// Use default hibernate.cfg.xml
				sessionFactory = new Configuration().configure(getConfig())
						.buildSessionFactory();

			}

			s = sessionFactory.openSession();
			session.set(s);
		}
		return s;
	}

	/**
	 * Description of the Method
	 * 
	 * @exception HibernateException
	 *                Description of Exception
	 * @since
	 */
	public static void closeSession() throws HibernateException {

		Session s = (Session) session.get();
		session.set(null);
		if (s != null) {
			s.close();
		}
	}

}