Open Session In View

Front-end
#1

Pessoal em que momento o session é fechada?

public class HibernateSessionRequestFilter implements Filter {
 
    private static Log log = LogFactory.getLog(HibernateSessionRequestFilter.class);
 
    private SessionFactory sf;
 
    public void doFilter(ServletRequest request,
                         ServletResponse response,
                         FilterChain chain)
            throws IOException, ServletException {
 
        try {
            log.debug("Starting a database transaction");
            sf.getCurrentSession().beginTransaction();
 
            // Call the next filter (continue request processing)
            chain.doFilter(request, response);
 
            // Commit and cleanup
            log.debug("Committing the database transaction");
            sf.getCurrentSession().getTransaction().commit();
 
        } catch (StaleObjectStateException staleEx) {
            log.error("This interceptor does not implement optimistic concurrency control!");
            log.error("Your application will not work until you add compensation actions!");
            // Rollback, close everything, possibly compensate for any permanent changes
            // during the conversation, and finally restart business conversation. Maybe
            // give the user of the application a chance to merge some of his work with
            // fresh data... what you do here depends on your applications design.
            throw staleEx;
        } catch (Throwable ex) {
            // Rollback only
            ex.printStackTrace();
            try {
                if (sf.getCurrentSession().getTransaction().isActive()) {
                    log.debug("Trying to rollback database transaction after exception");
                    sf.getCurrentSession().getTransaction().rollback();
                }
            } catch (Throwable rbEx) {
                log.error("Could not rollback transaction after exception!", rbEx);
            }
 
            // Let others handle it... maybe another interceptor for exceptions?
            throw new ServletException(ex);
        }
    }
 
    public void init(FilterConfig filterConfig) throws ServletException {
        log.debug("Initializing filter...");
        log.debug("Obtaining SessionFactory from static HibernateUtil singleton");
        sf = HibernateUtil.getSessionFactory();
    }
 
    public void destroy() {}
 
}
public class ItemDAO {
 
    Session currentSession;
 
    public ItemDAO() {
        currentSession = HibernateUtil.getSessionFactory().getCurrentSession();
    }
 
    public Item getItemById(Long itemId) {
        return (Item) currentSession.load(Item.class, itemId);
    }
}
#2