Have you ever been able to measure how much faster using FlushMode.NEVER is over letting Hibernate check it?
Eric > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] Behalf Of > Jason Carreira > Sent: Saturday, November 15, 2003 3:59 AM > To: [EMAIL PROTECTED] > Subject: RE: [OS-webwork] Hibernate Session as Request Scoped > Component > > > Public flogging? You'll get errors that you have to track down... > > > -----Original Message----- > > From: Matthew E. Porter [mailto:[EMAIL PROTECTED] > > Sent: Friday, November 14, 2003 9:53 PM > > To: [EMAIL PROTECTED] > > Subject: Re: [OS-webwork] Hibernate Session as Request Scoped > > Component > > > > > > Jason: > > What happens if some *accidentally* calls getReadOnly() > > and performs > > a write? > > > > > > Cheers, > > matthew > > > > On Nov 14, 2003, at 8:01 PM, Jason Carreira wrote: > > > > > Ok... Looking back at what we did here (and bugging Gavin)... > > > > > > We always set mySession.setFlushMode(FlushMode.NEVER); > > > > > > And have a flag that is set in the getReadWrite() that > tells it to > > > manually flush() on dispose, otherwise it doesn't flush at > > all, which > > > saves it from having to check the objects. > > > > > > Jason > > > > > >> -----Original Message----- > > >> From: [EMAIL PROTECTED] > > >> [mailto:[EMAIL PROTECTED] > > On Behalf > > >> Of Eric Pugh > > >> Sent: Friday, November 14, 2003 5:51 PM > > >> To: [EMAIL PROTECTED] > > >> Subject: RE: [OS-webwork] Hibernate Session as Request Scoped > > >> Component > > >> > > >> > > >> Hibernate is smart enough to know when to do the flush.. > > Yes, it has > > >> to check internally that nothing changed, but you would be > > doing that > > >> anyway. So, when you call the flush command, Hibernate > > then figures > > >> out what needs to be saved, and if nothing needs to be > > saved, then it > > >> won't... > > >> > > >> Eric > > >> > > >>> -----Original Message----- > > >>> From: [EMAIL PROTECTED] > > >>> [mailto:[EMAIL PROTECTED] > > >> Behalf Of > > >>> Jason Carreira > > >>> Sent: Friday, November 14, 2003 8:50 PM > > >>> To: [EMAIL PROTECTED] > > >>> Subject: RE: [OS-webwork] Hibernate Session as Request Scoped > > >>> Component > > >>> > > >>> > > >>> I think this is a good solution, except I think you forgot > > >> to save the > > >>> Session if it's null. I would optimize it by having two methods: > > >>> > > >>> getReadOnlySession > > >>> getReadWriteSession > > >>> > > >>> Which both return the same Session, but > > getReadWriteSession sets a > > >>> flag to do the flush()... If the flag is not set, you > can skip the > > >>> flush and > > >>> roll back the transaction. > > >>> > > >>> Jason > > >>> > > >>>> -----Original Message----- > > >>>> From: Matthew E. Porter [mailto:[EMAIL PROTECTED] > > >>>> Sent: Friday, November 14, 2003 12:16 PM > > >>>> To: [EMAIL PROTECTED] > > >>>> Subject: [OS-webwork] Hibernate Session as Request Scoped > > >> Component > > >>>> > > >>>> > > >>>> 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 > > >>>> > > >>>> > > >>>> > > >>>> ------------------------------------------------------- > > >>>> This SF. Net email is sponsored by: GoToMyPC > > >>>> GoToMyPC is the fast, easy and secure way to access your > > computer > > >>>> from any Web browser or wireless device. Click here to > > Try it Free! > > >>>> https://www.gotomypc.com/tr/OSDN/AW/Q4_2003/t/g22lp?Target=mm/ > > >>> g22lp.tmpl > > >>> _______________________________________________ > > >>> Opensymphony-webwork mailing list > > >>> [EMAIL PROTECTED] > > >>> https://lists.sourceforge.net/lists/listinfo/opensymphony-webwork > >>> > >>> > >>> ------------------------------------------------------- > >>> This SF. Net email is sponsored by: GoToMyPC > >>> GoToMyPC is the fast, easy and secure way to access your > >> computer from > >>> any Web browser or wireless device. Click here to Try it Free! > >>> https://www.gotomypc.com/tr/OSDN/AW/Q4_2003/t/g22lp?Target=mm/ > >> g22lp.tmpl > >> _______________________________________________ > >> Opensymphony-webwork mailing list > >> [EMAIL PROTECTED] > >> https://lists.sourceforge.net/lists/listinfo/opensymphony-webwork > >> > > > > > > ------------------------------------------------------- > > This SF. Net email is sponsored by: GoToMyPC > > GoToMyPC is the fast, easy and secure way to access your > computer from > > any Web browser or wireless device. Click here to Try it Free! > > https://www.gotomypc.com/tr/OSDN/AW/Q4_2003/t/g22lp?Target=mm/ > > g22lp.tmpl > > _______________________________________________ > > Opensymphony-webwork mailing list > > [EMAIL PROTECTED] > > https://lists.sourceforge.net/lists/listinfo/opensymphony-webwork > > > > ------------------------------------------------------- > This SF. Net email is sponsored by: GoToMyPC > GoToMyPC is the fast, easy and secure way to access your > computer from any Web browser or wireless device. Click here > to Try it Free! > https://www.gotomypc.com/tr/OSDN/AW/Q4_2003/t/g22lp?Target=mm/ g22lp.tmpl _______________________________________________ Opensymphony-webwork mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/opensymphony-webwork ------------------------------------------------------- This SF. Net email is sponsored by: GoToMyPC GoToMyPC is the fast, easy and secure way to access your computer from any Web browser or wireless device. Click here to Try it Free! https://www.gotomypc.com/tr/OSDN/AW/Q4_2003/t/g22lp?Target=mm/g22lp.tmpl _______________________________________________ Opensymphony-webwork mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/opensymphony-webwork
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