modelo.CalificacionLibroDAO.java Source code

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Here is the source code for modelo.CalificacionLibroDAO.java

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/*
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package modelo;

import java.math.BigDecimal;
import java.util.List;
import org.hibernate.HibernateException;
import org.hibernate.SQLQuery;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.Transaction;
import org.hibernate.cfg.Configuration;

/**
 *
 * @author jonathanjb
 */
public class CalificacionLibroDAO extends AbstractDAO {
    public CalificacionLibroDAO() {
        super();
    }

    /**
     * Insert a new Calificacionlibro into the database.
     *
     * @param calificacionl
     */
    public void save(Calificacionlibro calificacionl) throws DataAccessLayerException {
        super.save(calificacionl);
    }

    /**
     * Updates a new Calificacionlibro into the database.
     *
     * @param calificacionl
     */
    public void update(Calificacionlibro calificacionl) throws DataAccessLayerException {
        super.update(calificacionl);
    }

    /**
     * Delete a detached Calificacionulibro from the database.
     *
     * @param calificacionl
     */
    public void delete(Calificacionlibro calificacionl) throws DataAccessLayerException {
        super.delete(calificacionl);
    }

    /**
     * Find an Event by its primary key.
     *
     * @param id
     * @return
     */
    public Calificacionlibro find(Long id) throws DataAccessLayerException {
        return (Calificacionlibro) super.find(Calificacionlibro.class, id);
    }

    /**
     * Lista todos las calificaciones de los libros de la base de datos
     *
     * @return
     */
    public List findAll() throws DataAccessLayerException {
        return super.findAll(Calificacionlibro.class);
    }

    /**
     * Lista todos los libros de la base de datos
     *
     * @return
     */
    public int maxIndice() {
        return super.maxIndice("calificacionlibro", "idcalificacionlibro");
    }

    public List<Libro> librosPorCalificar(int id) {
        SessionFactory factory;
        List<Libro> misprestamos = null;
        try {
            factory = new Configuration().configure().buildSessionFactory();
        } catch (Throwable ex) {
            System.err.println("Failed to create sessionFactory object." + ex);
            throw new ExceptionInInitializerError(ex);
        }
        Session session = factory.openSession();
        Transaction tx = null;
        try {
            tx = session.beginTransaction();
            String sql = "SELECT * FROM libro WHERE idlibro IN (SELECT libroidlibro FROM solicitudes WHERE aceptado = TRUE AND califlibro = FALSE AND usridusuario = "
                    + id + " )";
            SQLQuery query = session.createSQLQuery(sql);
            query.addEntity(Libro.class);
            misprestamos = query.list();
            tx.commit();
            return misprestamos;
        } catch (HibernateException e) {
            if (tx != null)
                tx.rollback();
            return null;
        } finally {
            session.close();
        }
    }

    public Integer promedio(int id) {
        SessionFactory factory;
        Integer p = -1;
        try {
            factory = new Configuration().configure().buildSessionFactory();
        } catch (Throwable ex) {
            System.err.println("Failed to create sessionFactory object." + ex);
            throw new ExceptionInInitializerError(ex);
        }
        Session session = factory.openSession();
        Transaction tx = null;
        try {
            tx = session.beginTransaction();
            String sql = "SELECT avg(calificacion) FROM calificacionlibro WHERE libroidlibro =" + id;
            SQLQuery query = session.createSQLQuery(sql);
            if (query.uniqueResult() != null) {
                p = ((BigDecimal) query.uniqueResult()).intValue();
            }
            tx.commit();
            return p;
        } catch (HibernateException e) {
            if (tx != null)
                tx.rollback();
            return -1;
        } finally {
            session.close();
        }
    }

    public List<Calificacionlibro> calificaciones(int id) {
        SessionFactory factory;
        List<Calificacionlibro> calificacion = null;
        try {
            factory = new Configuration().configure().buildSessionFactory();
        } catch (Throwable ex) {
            System.err.println("Failed to create sessionFactory object." + ex);
            throw new ExceptionInInitializerError(ex);
        }
        Session session = factory.openSession();
        Transaction tx = null;
        try {
            tx = session.beginTransaction();
            String sql = "SELECT * FROM calificacionlibro WHERE libroidlibro = " + id;
            SQLQuery query = session.createSQLQuery(sql);
            query.addEntity(Calificacionlibro.class);
            calificacion = query.list();
            tx.commit();
            return calificacion;
        } catch (HibernateException e) {
            if (tx != null)
                tx.rollback();
            return null;
        } finally {
            session.close();
        }
    }
}