/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package com.toscana.util;

import org.hibernate.cfg.AnnotationConfiguration;
import org.hibernate.SessionFactory;

/**
 * Hibernate Utility class with a convenient method to get Session Factory
 * object.
 *
 * @author Arandi
 */
public class ToscanaHibernateUtil {

    private static final SessionFactory sessionFactory;
    
    static {
        try {
            // Create the SessionFactory from standard (hibernate.cfg.xml) 
            // config file.
            sessionFactory = new AnnotationConfiguration().configure().buildSessionFactory();
        } catch (Throwable ex) {
            // Log the exception. 
            System.err.println("Initial SessionFactory creation failed." + ex);
            throw new ExceptionInInitializerError(ex);
        }
    }
    
    public static SessionFactory getSessionFactory() {
        return sessionFactory;
    }
}

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package com.toscana.util;

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

/**
 * Hibernate Utility class with a convenient method to get Session Factory
 * object.
 *
 * @author Arandi
 */
public class ToscanaHibernateUtil {

    private static final SessionFactory sessionFactory;
    
    static {
        try {
            // Create the SessionFactory from standard (hibernate.cfg.xml) 
            // config file.
            sessionFactory = new AnnotationConfiguration().configure().buildSessionFactory();
        } catch (Throwable ex) {
            // Log the exception. 
            System.err.println("Initial SessionFactory creation failed." + ex);
            throw new ExceptionInInitializerError(ex);
        }
    }
    
    public static SessionFactory getSessionFactory() {
        return sessionFactory;
    }
    public static Session beginTransaction() {
            Session hibernateSession = ToscanaHibernateUtil.getSession();
            hibernateSession.beginTransaction();
            return hibernateSession;
        }
 
        public static void commitTransaction() {
            ToscanaHibernateUtil.getSession().getTransaction().commit();
        }
 
        public static void rollbackTransaction() {
            ToscanaHibernateUtil.getSession().getTransaction().rollback();
        }
 
        public static void closeSession() {
            ToscanaHibernateUtil.getSession().close();
        }
 
        public static Session getSession() {
            Session hibernateSession = sessionFactory.getCurrentSession();
            return hibernateSession;
        }        
}

Update ToscanaHibernateUtil