com.luizalabs.friendsserver.util.HibernateUtil.java Source code

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Here is the source code for com.luizalabs.friendsserver.util.HibernateUtil.java

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package com.luizalabs.friendsserver.util;

import com.luizalabs.friendsserver.model.Friend;
import com.luizalabs.friendsserver.model.Post;
import org.hibernate.SessionFactory;
import org.hibernate.boot.registry.StandardServiceRegistryBuilder;
import org.hibernate.cfg.Configuration;
import org.hibernate.service.ServiceRegistry;

/**
 *
 * @author alanfrank
 */
public class HibernateUtil {
    private static SessionFactory sessionFactory;

    public static SessionFactory getSessionFactory() {
        if (sessionFactory == null) {
            try {
                Configuration configuration = new Configuration().configure().addAnnotatedClass(Friend.class)
                        .addAnnotatedClass(Post.class);

                StandardServiceRegistryBuilder serviceRegistryBuilder = new StandardServiceRegistryBuilder();
                serviceRegistryBuilder.applySettings(configuration.getProperties());

                ServiceRegistry serviceRegistry = serviceRegistryBuilder.build();
                sessionFactory = configuration.buildSessionFactory(serviceRegistry);

            } catch (Throwable ex) {
                System.err.println("Initial SessionFactory creation failed." + ex);
                throw new ExceptionInInitializerError(ex);
            }

            return sessionFactory;
        } else {
            return sessionFactory;
        }
    }
}