[OS-webwork] Hibernate Session as Request Scoped Component

[Matthew E . Porter]

Instead of using a ThreadLocal Hibernate Session, has anyone played 
with having a HibernateSessionProvider component at the request scope?  
Here is how I would envision the code:

public class HibernateSessionProvider implements SessionProvider, 
Disposable {
    private SessionFactoryProvider sessionFactoryProvider;
    private Session session;

    public SessionFactoryProvider getSessionFactoryProvider() {
        return this.sessionFactoryProvider;
    }
    public void setSessionFactoryProvider(SessionFactoryProvider 
sessionFactoryProvider) {
        this.sessionFactoryProvider = sessionFactoryProvider;
    }

    public Session getSession() throws PersistenceException {
        if ((this.session == null) || (!this.session.isOpen())) {
            try {
                return 
this.sessionFactoryProvider.getSessionFactory().openSession();
            } catch (HibernateException he) {
                throw new PersistenceException("HibernateException 
caught building hibernate hibernate", he);
            }
        }

        return this.session;
    }
    public void dispose() {
        if ((this.session != null) && (this.session.isOpen()) && 
(this.session.isConnected()) {
            try {
            this.session.flush();
            this.session.connection().commit();
            this.session.close();
            } catch (Exception e) {
                // do something
            }
        }

    }
}
Is there anything wrong with doing it this way?  All of the components 
needing a Hibernate session (Persistence Manager and DAOs) are scoped 
at the same level.  SessionFactoryProvider is another component but 
scoped at the application.

Cheers,
  matthew


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