clases.ContactoAnotDAO.java Source code

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Here is the source code for clases.ContactoAnotDAO.java

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/*
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package clases;

import entidades.ContactoAnot;
import java.util.List;
import org.hibernate.HibernateException;
import org.hibernate.Session;
import org.hibernate.Transaction;

/**
 *
 * @author alexis
 */
public class ContactoAnotDAO {
    private Session sesion;
    private Transaction tx;

    private void iniciaOperacion() throws HibernateException {

        sesion = HibernateUtil.getSessionFactory().openSession();
        tx = sesion.beginTransaction();

    }

    private void manejaExcepcion(HibernateException he) throws HibernateException {
        tx.rollback();
        throw new HibernateException("Ocurri un error en la capa de acceso a datos", he);
    }

    public Integer guardaContacto(ContactoAnot contacto) {
        Integer id = 0;

        try {
            iniciaOperacion();
            id = (Integer) sesion.save(contacto);
            tx.commit();
        } catch (HibernateException he) {
            manejaExcepcion(he);
            //throw he;
        } finally {
            sesion.close();
        }
        return id;
    }

    public void actualizaContacto(ContactoAnot contacto) throws HibernateException {

        try {
            iniciaOperacion();
            sesion.update(contacto);
            tx.commit();
        } catch (HibernateException he) {
            manejaExcepcion(he);
            throw he;
        } finally {
            sesion.close();
        }
    }

    public void eliminaContacto(ContactoAnot contacto) throws HibernateException {

        try {
            iniciaOperacion();
            sesion.delete(contacto);
            tx.commit();
        } catch (HibernateException he) {
            manejaExcepcion(he);
            throw he;
        } finally {
            sesion.close();
        }
    }

    public ContactoAnot obtenContacto(Integer idContacto) throws HibernateException {

        ContactoAnot contacto = null;

        try {
            iniciaOperacion();
            contacto = (ContactoAnot) sesion.get(ContactoAnot.class, idContacto);
        } finally {
            sesion.close();
        }
        return contacto;
    }

    public List<ContactoAnot> obtenListaContactos() throws HibernateException {

        List<ContactoAnot> listaContactos = null;

        try {
            iniciaOperacion();
            listaContactos = sesion.createQuery("from ContactoAnot").list();

        } finally {
            sesion.close();
        }
        return listaContactos;
    }

}