BCESystemHibernateDAO.java

package bce.server.dao.hibernate;

import org.hibernate.Session;
import org.hibernate.SessionFactory;

import bce.server.dao.BCESystemDAO;
import bce.server.entities.PersistentBCESystem;

/**
 * 服务器端BCE系统DAO的Hibernate实现
 *
 * @author robins
 *
 */
public class BCESystemHibernateDAO implements BCESystemDAO {

    SessionFactory factory;

    public void setFactory(SessionFactory factory) {
        this.factory = factory;
    }

    public BCESystemHibernateDAO() {}

    /*
     * (non-Javadoc)
     * @see bce.server.dao.BCESystemDAO#get(java.lang.Integer)
     */
    @Override
    public PersistentBCESystem get(Integer systemId) {

        Session session = factory.openSession();
        return (PersistentBCESystem) session.get(PersistentBCESystem.class, systemId);
    }

    /*
     * (non-Javadoc)
     * @see bce.server.dao.BCESystemDAO#add(bce.server.entities.PersistentBCESystem)
     */
    @Override
    public void add(PersistentBCESystem system) {

        Session session = factory.openSession();
        session.beginTransaction();
        session.save(system);
        session.getTransaction().commit();

        if (session.isOpen())
            session.close();
    }

    /*
     * (non-Javadoc)
     * @see bce.server.dao.BCESystemDAO#update(bce.server.entities.PersistentBCESystem)
     */
    @Override
    public void update(PersistentBCESystem system) {

        Session session = factory.openSession();
        session.beginTransaction();
        session.update(session.merge(system));
        session.getTransaction().commit();

        if (session.isOpen())
            session.close();
    }

    /*
     * (non-Javadoc)
     * @see bce.server.dao.BCESystemDAO#delete(bce.server.entities.PersistentBCESystem)
     */
    @Override
    public void delete(PersistentBCESystem system) {

        Session session = factory.openSession();
        session.beginTransaction();
        session.delete(session.merge(system));
        session.getTransaction().commit();

        if (session.isOpen())
            session.close();
    }

}