model.DistritoDAO.java Source code

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Here is the source code for model.DistritoDAO.java

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/*
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package model;

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

/**
 *
 * @author Equipo 18
 */
public class DistritoDAO {

    private Session session;
    private Transaction transaction;

    public long guardarDistrito(Distrito distrito) throws HibernateException {
        long id = 0;
        try {
            iniciaOperacion();
            id = (long) session.save(distrito);
            transaction.commit();
        } catch (HibernateException e) {
            manejarExcepcion(e);
            throw e;
        } finally {
            session.close();
        }
        return id;
    }

    public void actualizarDistrito(Distrito distrito) throws HibernateException {
        try {
            iniciaOperacion();
            session.update(distrito);
            transaction.commit();
        } catch (HibernateException e) {
            manejarExcepcion(e);
            throw e;
        } finally {
            session.close();
        }
    }

    public void eliminarDistrito(Distrito distrito) throws HibernateException {
        try {
            iniciaOperacion();
            session.delete(distrito);
            transaction.commit();
        } catch (HibernateException e) {
            manejarExcepcion(e);
            throw e;
        } finally {
            session.close();
        }
    }

    public Distrito obtenerDistrito(int codigo) throws HibernateException {
        Distrito distrito = null;
        try {
            iniciaOperacion();
            distrito = (Distrito) session.get(Distrito.class, codigo);
        } finally {
            session.close();
        }
        return distrito;
    }

    public List<Distrito> obtenerDistritos() throws HibernateException {
        List<Distrito> listaDistritos = null;
        try {
            iniciaOperacion();
            listaDistritos = session.createQuery("from Distrito").list();
        } finally {
            session.close();
        }
        return listaDistritos;
    }

    private void iniciaOperacion() {
        session = HibernateUtil.getSessionFactory().openSession();
        transaction = session.beginTransaction();
    }

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

}