DAO.FacturaImplements.java Source code

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Here is the source code for DAO.FacturaImplements.java

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/*
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package DAO;

import Persistencia.HibernateUtil;
import Pojo.Facturas;
import java.util.List;
import javax.faces.application.FacesMessage;
import javax.faces.context.FacesContext;
import org.hibernate.HibernateException;
import org.hibernate.Query;
import org.hibernate.Session;

/**
 *
 * @author Wolverine20
 */
public class FacturaImplements implements FacturaDao {

    @Override
    public List<Facturas> mostrarFacturas() {
        Session session = null;
        List<Facturas> lista = null;
        try {

            session = HibernateUtil.getSessionFactory().openSession();
            Query query = session.createQuery("from Facturas");
            lista = (List<Facturas>) query.list();

        } catch (HibernateException e) {
            System.out.println("Error catch");
        } finally {
            if (session != null) {
                session.close();
            }
        }
        return lista;

    }

    @Override
    public void insertarFactura(Facturas factura) {
        Session session = null;
        try {
            session = HibernateUtil.getSessionFactory().openSession();
            session.beginTransaction();
            session.merge(factura);
            session.getTransaction().commit();
            FacesContext.getCurrentInstance().addMessage(null, new FacesMessage(FacesMessage.SEVERITY_INFO,
                    "La factura fue creada con exito", "No se puedo crear la factura"));
        } catch (HibernateException e) {

            System.out.println(e.getMessage());
            session.getTransaction().rollback();
        } finally {
            if (session != null) {
                session.close();
            }
        }
    }

    @Override
    public void modificarFactura(Facturas factura) {
        Session session = null;
        try {
            session = HibernateUtil.getSessionFactory().openSession();
            session.beginTransaction();
            session.update(factura);
            session.getTransaction().commit();
        } catch (HibernateException e) {
            System.out.println(e.getMessage());
            session.getTransaction().rollback();
        } finally {
            if (session != null) {
                session.close();
            }
        }
    }

    @Override
    public void eliminarFactura(Facturas factura) {
        Session session = null;
        try {
            session = HibernateUtil.getSessionFactory().openSession();
            session.beginTransaction();
            session.delete(factura);
            session.getTransaction().commit();
        } catch (HibernateException e) {
            System.out.println(e.getMessage());
            session.getTransaction().rollback();
        } finally {
            if (session != null) {
                session.close();
            }
        }
    }
}