bprocessor-commit

[Jesper P. <je...@us...>]

Update of /cvsroot/bprocessor/model/src/net/sourceforge/bprocessor/model/db
In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv8047

Added Files:
	HibernateUtil.java 
Log Message:
Controller of the Hibernate session

--- NEW FILE: HibernateUtil.java ---
//---------------------------------------------------------------------------------
// $Id: HibernateUtil.java,v 1.1 2005/07/28 06:50:19 jews Exp $
//
// Copyright (c) 2005      The BProcessor Team (http://bprocessor.sourceforge.net) 
// Released under the Lesser GNU Public License v2.1
//---------------------------------------------------------------------------------
package net.sourceforge.bprocessor.model.db;

import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.cfg.Configuration;

import org.apache.log4j.Logger;

/**
 * Hibernate utility class
 */
public class HibernateUtil {
  /** The logger */
  private static Logger log = Logger.getLogger(HibernateUtil.class);

  /** The singleton */
  private static HibernateUtil instance;

  /** The session factory */
  private static SessionFactory sf;

  /** The session */
  private static final ThreadLocal TL = new ThreadLocal();

  /**
   * Constructor
   */
  private HibernateUtil() {
    try {
      sf = new Configuration().configure().buildSessionFactory();
    } catch (Exception e) {
      log.fatal("Exception", e);
    }
  }

  /**
   * Get the instance
   * @return The instance
   */
  public static synchronized HibernateUtil getInstance() {
    if (instance == null) {
      instance = new HibernateUtil();
    }
    return instance;
  }

  /**
   * Get the current session
   * @return The session
   */
  public Session currentSession() {
    Session s = (Session)TL.get();
    if (s == null) {
      s = sf.openSession();
      TL.set(s);
    }
    return s;
  }

  /**
   * Close the current session
   */
  public void closeSession() {
    Session s = (Session)TL.get();
    if (s != null) {
      s.close();
    }
    TL.set(null);
  }
}