Modelo.UserDAO.java Source code

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Here is the source code for Modelo.UserDAO.java

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/*
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package Modelo;

import Mapeo.Persona;
import Mapeo.User;
import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.Transaction;

/**
 *
 * @author diego
 */

public class UserDAO {
    //Atributo para una nueva sesion
    private SessionFactory sessionFactory;

    public void setSessionFactory(SessionFactory sessionFactory) {
        this.sessionFactory = sessionFactory;
    }

    /**
     * Guarda a un usuario en la base de datos.
     * @param user
     */
    public void guardar(User user) {
        Session session = sessionFactory.openSession();
        Transaction tx = null;
        try {
            tx = session.beginTransaction();
            session.persist(user);
            tx.commit();
        } catch (Exception e) {
            if (tx != null) {
                tx.rollback();
            }
            e.printStackTrace();
        } finally {
            session.close();
        }
    }

    /**
     * Actualiza a un User de la base de datos.
     * @param user
     */
    public void actualizar(User user) {

        Session session = sessionFactory.openSession();
        Transaction tx = null;
        try {
            tx = session.beginTransaction();

            session.update(user);

            tx.commit();
        } catch (Exception e) {
            if (tx != null) {
                tx.rollback();
            }
            e.printStackTrace();
        } finally {
            session.close();
        }
    }

    /**
     * Elimina a un User de la base de datos.
     * @param user
     */
    public void eliminar(User user) {

        Session session = sessionFactory.openSession();
        Transaction tx = null;
        try {
            tx = session.beginTransaction();

            session.delete(user);

            tx.commit();
        } catch (Exception e) {
            if (tx != null) {
                tx.rollback();
            }
            e.printStackTrace();
        } finally {
            session.close();
        }
    }

    public User getUser(String nombre) {
        User user = null;
        Session session = sessionFactory.openSession();
        Transaction tx = null;
        try {
            tx = session.beginTransaction();
            String hql = " from User where correo = :nombre";
            Query query = session.createQuery(hql);
            query.setParameter("nombre", nombre);
            user = (User) query.uniqueResult();
            tx.commit();

        } catch (Exception e) {
            if (tx != null) {
                tx.rollback();
            }
            e.printStackTrace();
        } finally {
            session.close();
        }
        return user;
    }
}