br.ifes.gerenciadormesada.conexao.HibernateUtil.java Source code

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Here is the source code for br.ifes.gerenciadormesada.conexao.HibernateUtil.java

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package br.ifes.gerenciadormesada.conexao;

import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.cfg.Configuration;
import org.hibernate.service.ServiceRegistry;
import org.hibernate.service.ServiceRegistryBuilder;

/**
 *
 * @author Vinicius
 */
public class HibernateUtil {
    //objeto que fabrica uma ou mais instncia de sesses de acesso ao banco a partir da
    //configuraes do objeto serviceRegistry
    private static SessionFactory sessionFactory;

    //objeto responsvel pela configuraes do hibernate.cfg.xml
    private static ServiceRegistry serviceRegistry;

    @SuppressWarnings("unused")

    private static SessionFactory buildSessionFactory() {
        try {
            //objeto que armazena configuraes do hibernate.cfg.xml
            Configuration configuration = new Configuration();

            //mtodo que l e valida as configuraes em hibernate.cfg.xml
            configuration.configure();

            //aplica e carrega as configuraes no objeto serviceRegistry
            //serviceRegistry = (ServiceRegistry) new ServiceRegistryBuilder().applySettings(configuration.getProperties()).buildServiceRegistry();
            serviceRegistry = (ServiceRegistry) new ServiceRegistryBuilder()
                    .applySettings(configuration.getProperties()).build();
            //cria uma ou mais instncias de sesso da configurao. Geralmente
            //uma aplicao tem uma nica instncia de sesso e threads servindo pedidos de clientes
            //obtendo instncias da sesso do factory (fbrica)
            sessionFactory = configuration.buildSessionFactory(serviceRegistry);

            return sessionFactory;
        } catch (Exception e) {
            throw new ExceptionInInitializerError("Criacao do objeto falhou: " + e);
        }
    }

    public static SessionFactory getSessionFactory() {
        return buildSessionFactory();
    }

    public static Session getSession() {
        return sessionFactory.getCurrentSession();
    }
}