com.hibernate.dao.ClienteDAO.java Source code

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Here is the source code for com.hibernate.dao.ClienteDAO.java

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/*
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 */
package com.hibernate.dao;

import com.hibernate.entidades.Cliente;
import com.hibernate.init.HibernateUtil;
import java.util.ArrayList;
import java.util.List;
import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.Transaction;

/**
 *
 * @author bruno
 */
public class ClienteDAO {

    public void agregaCliente(Cliente cliente) {
        Transaction trns = null;
        Session session = HibernateUtil.getSessionFactory().openSession();
        try {
            trns = session.beginTransaction();
            session.save(cliente);
            session.getTransaction().commit();
        } catch (RuntimeException e) {
            if (trns != null) {
                trns.rollback();
            }
            e.printStackTrace();
        } finally {
            session.flush();
            session.close();
        }
    }

    public void borraCliente(int idCliente) {
        Transaction trns = null;
        Session session = HibernateUtil.getSessionFactory().openSession();
        try {
            trns = session.beginTransaction();
            Cliente cliente = (Cliente) session.load(Cliente.class, new Integer(idCliente));
            session.delete(cliente);
            session.getTransaction().commit();
        } catch (RuntimeException e) {
            if (trns != null) {
                trns.rollback();
            }
            e.printStackTrace();
        } finally {
            session.flush();
            session.close();
        }
    }

    public void actualizaCliente(Cliente cliente) {
        Transaction trns = null;
        Session session = HibernateUtil.getSessionFactory().openSession();
        try {
            trns = session.beginTransaction();
            session.update(cliente);
            session.getTransaction().commit();
        } catch (RuntimeException e) {
            if (trns != null) {
                trns.rollback();
            }
            e.printStackTrace();
        } finally {
            session.flush();
            session.close();
        }
    }

    public List<Cliente> listaClientes() {
        List<Cliente> users = new ArrayList<Cliente>();
        Transaction trns = null;
        Session session = HibernateUtil.getSessionFactory().openSession();
        try {
            trns = session.beginTransaction();
            users = session.createQuery("from Cliente").list();
        } catch (RuntimeException e) {
            e.printStackTrace();
        } finally {
            session.flush();
            session.close();
        }
        return users;
    }

    public Cliente buscaCliente(int idCliente) {
        Cliente cliente = null;
        Transaction trns = null;
        Session session = HibernateUtil.getSessionFactory().openSession();
        try {
            trns = session.beginTransaction();
            String queryString = "from Cliente where id = :id";
            Query query = session.createQuery(queryString);
            query.setInteger("id", idCliente);
            cliente = (Cliente) query.uniqueResult();
        } catch (RuntimeException e) {
            e.printStackTrace();
        } finally {
            session.flush();
            session.close();
        }
        return cliente;
    }

}