hibernatesessionfactory.java

hibernatedemo

/**
 * Hibernate Demo
 * Copyright by cinc
 */
package dao.hibernate;

import net.sf.hibernate.cfg.Configuration;
import net.sf.hibernate.*;
import bean.Person;
import bean.Province;
import bean.Company;

public class HibernateSessionFactory {
    private static SessionFactory sessionFactory;

    public synchronized static Session openSession() throws HibernateException {
        if (sessionFactory == null) {
            init();
        }
        return sessionFactory.openSession();
    }

    private static void init() {
        Configuration conf = null;
        try {
            conf = new Configuration()
                    .addClass( Person.class )
                    .addClass( Province.class )
                    .addClass( Company.class );
            sessionFactory = conf.buildSessionFactory();
        } catch (MappingException e) {
            e.printStackTrace();
        } catch (HibernateException e) {
            e.printStackTrace();
        }
    }
}