unic.mentoring.hibernate.util.DbUtil.java Source code

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Here is the source code for unic.mentoring.hibernate.util.DbUtil.java

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/**
 * @author Unic
 * "hw09" project, Dec 12, 2014, 12:17:42 AM
 * GPL v3: http://gnu.org/licenses
 */

package unic.mentoring.hibernate.util;

import org.hibernate.SessionFactory;
import org.hibernate.boot.registry.StandardServiceRegistryBuilder;
import org.hibernate.cfg.Configuration;
import org.hibernate.service.ServiceRegistry;

public class DbUtil {
    private static SessionFactory sessionFactory;

    public static SessionFactory getSessionFactory() {
        if (sessionFactory == null) {
            Configuration configuration = new Configuration().configure();
            StandardServiceRegistryBuilder serviceRegistryBuilder = new StandardServiceRegistryBuilder();
            serviceRegistryBuilder.applySettings(configuration.getProperties());
            ServiceRegistry serviceRegistry = serviceRegistryBuilder.build();
            sessionFactory = configuration.buildSessionFactory(serviceRegistry);
        }

        return sessionFactory;
    }

    public static void closeSessionFactory() {
        if (sessionFactory != null) {
            sessionFactory.close();
            sessionFactory = null;
        }
    }
}