hibernateutil.java

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package com.laoer.comm.db;

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

/**
 * <p>Title: 天乙软件工作室公共包</p>
 * <p>Description: 天乙软件工作室公共包</p>
 * <p>Copyright: Copyright (c) 2004</p>
 * <p>Company: 天乙软件工作室[LAOER.COM/TIANYISOFT.NET]</p>
 * @author 龚天乙(Laoer)
 * @version 1.0
 */

public class HibernateUtil {

  private static final SessionFactory sessionFactory;
  public static final ThreadLocal session = new ThreadLocal();

  static {
    try {
      sessionFactory = new Configuration().configure().buildSessionFactory();
    }
    catch (HibernateException ex) {
      throw new RuntimeException(
          "Exception building SessionFactory: " + ex.getMessage(),
          ex);
    }
  }

  public static Session currentSession() throws HibernateException {
    Session s = (Session) session.get();
    // Open a new Session, if this Thread has none yet
    if (s == null) {
      s = sessionFactory.openSession();
      session.set(s);
    }
    return s;
  }

  public static void closeSession() throws HibernateException {
    Session s = (Session) session.get();
    session.set(null);
    if (s != null) {
      s.close();
    }
  }

}