hibernateutil.java

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/*
 * HibernateUtil.java
 *
 * Created on 2006年5月1日, 下午8:31
 *
 * To change this template, choose Tools | Template Manager
 * and open the template in the editor.
 */

package enova.util;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.hibernate.*;
import org.hibernate.cfg.*;

/**
 *
 * @author vlinux
 */
public class HibernateUtil {
    
    private static Log log = LogFactory.getLog(HibernateUtil.class);
    private static final SessionFactory sessionFactory;
    
    static {
        try {
            sessionFactory = new Configuration().configure()
            .buildSessionFactory();
        } catch (Throwable ex) {
            log.error("Initial SessionFactory creation failed.", ex);
            throw new ExceptionInInitializerError(ex);
        }
    }
    
    public static final ThreadLocal session = new ThreadLocal();
    
    public static Session currentSession() {
        Session s = (Session) session.get();
        if (s == null) {
            s = sessionFactory.openSession();
            session.set(s);
        }
        return s;
    }
    
    public static void closeSession() {
        Session s = (Session) session.get();
        if (s != null)
            s.close();
        session.set(null);
    }
    
    /**
     * Creates a new instance of HibernateUtil
     */
    public HibernateUtil() {
    }
    
}