Re: [seam-dev] lobbying for alternative JPA provider support in 2.0.2.SP1

I think it is correct to call setManualFlushMode() before the render response phase. We should *never* flush changes to the database while in render response, and we should therefore avoid the cost of a dirty check. The correct fix would be to have two methods: setManualFlushMode() setRenderFlushMode() with diff implementations for non-Hibernate persistence providers: setManualFlushMode() throws an exception setRenderFlushMode() is a no-op for Hibernate, however, setRenderFlushMode() would call setManualFlushMode(). :-) On Tue, May 27, 2008 at 12:36 PM, Pete Muir <pete.muir(a)jboss.org&gt; wrote: > It looks like we will end up having a 2.0.3 release. I would prefer not to > put this fix for which there is an easy workaround into this release > especially as I don't think this fix is correct (we shouldn't call > setManualFlushMode() from there at all). > > On 27 May 2008, at 16:37, Dan Allen wrote: > >> Seam devs, >> >> I am bringing a topic that happened in a private e-mail between Jay >> and I to the list. >> >> The main issue that I really want to see included in 2.0.2.SP1 is this >> fix for the PersistenceProvider (JBSEAM-3030). It bothers me that we >> are blatantly not supporting other JPA providers, even though we all >> know how important manual flushing is (trust that I find it the single >> most lacking feature in JPA). This is not a regression, but it sure >> feels like one. >> >> The backstory is that if you have at least one component with a >> persistence context (e.g. @In private EntityManager entityManager or >> @PersistenceContext private EntityManager entityManager), then Seam >> will attempt to put it into manual flush mode before rendering. When >> that happens, you are using the generic JPA provider, an exception is >> thrown, failing the rendering process. The only way around this issue >> is to implement your own PersistenceProvider and override the >> setManualFlushMode() to do nothing. My fix changes this exception to a >> log warning message. >> >> -Dan >> >> -- >> Dan Allen >> Software consultant | Author of Seam in Action >> >> http://www.mojavelinux.com >> http://manning.com/dallen >> >> NOTE: While I make a strong effort to keep up with my email on a daily >> basis, life and work come first and, at times, keep me away from my mail >> for a while. If you contact me, then don't hear back for more than a week, >> it is very likely that I am excessively backlogged or the message was >> caught in the spam filters. Please don't hesitate to resend a message if >> you feel that it did not reach my attention. >> _______________________________________________ >> seam-dev mailing list >> seam-dev(a)lists.jboss.org >> https://lists.jboss.org/mailman/listinfo/seam-dev > > _______________________________________________ > seam-dev mailing list > seam-dev(a)lists.jboss.org > https://lists.jboss.org/mailman/listinfo/seam-dev > -- Gavin King gavin.king(a)gmail.com http://in.relation.to/Bloggers/Gavin http://hibernate.org http://seamframework.org