Re: [rules-users] Hibernate proxy objects equality tests failing in Drools 5

Thanks Greg, But it´s not a lazy loading problem at all. I am not using any kind of lazy attribute inside the statefull drools session... Unfortunelly, i´ve just upgrade from drools 4GA to 5CR1 and the problem persist. Now I will try to make CLONES of the objects the came from the bank, just to see if that (temporary) solution works. > > Do you need the lazy loading functionality that proxies provide? > It seems > to me that if you have an EJB call that's providing the objects > loaded > from hibernate, that's probably not the case. (i.e. once the > objects are > loaded and returned by the EJB method, the hibernate session may no > longer > be available, so lazy loading could fail anyway.) If you have > access to > the hibernate mapping just set lazy="false" on your class mappings. > > Not to say that this use case shouldn't be addressed with drools, > but if > you're under a deadline... :) > > --- On Mon, 5/4/09, Guto <guto(a)guto.net&gt; wrote: > >> From: Guto <guto(a)guto.net&gt; >> Subject: Re: [rules-users] Hibernate proxy objects equality tests >> failing in Drools 5 >> To: "Rules Users List" <rules-users(a)lists.jboss.org&gt; >> Date: Monday, May 4, 2009, 2:42 PM >> Just now I notice one thing. The application that i am >> building is >> compleatly EJB centric. I have um EJB project that usually >> do all the >> database stuff, and another EJB project for the drools >> rules. Lets call >> them >> EJB-DATA and EJB-DROOLS. When the client calls for an >> specific data that >> must be threated thru the Drools rules it calls an >> Stateless method from >> EJB-DATA, inside the method, it gather the necessarie >> parameter >> information and them inside the EJB-DATA method it calls >> the EJB-DROOLS. >> (hoping not been confusing) >> >> (if you are using an fixed space font, here comes the >> sequence) >> >> Client --> EJB-DATA (gather information inside) --> >> EJB-DROOLS >> <-- return to Client data from EJB-DROOLS<-- >> return to EJB-DATA >> >> Now looking over my two projects, I notice that I make them >> apart so one >> could evolve with interfering the other. >> >> When I call EJB-DROOLS directly from an UNIT-TEST client >> with pojos >> parameters intantiated by the test, it pass. >> >> When I call EJB-DATA from an UNIT-TEST client (pojos >> created inside this), >> first i was getting an CORBA exception ´cause of a >> ClassNotFoundException >> for the hibernate PersistenceBag. >> >> That´s the way i figure out that my objects are bagged or >> proxied thru >> hibernate. >> >> I´ve tried to use the EntityManager.clear() (EJB3-JPA) to >> clean the pojos >> before send it and make them more like the ones from the >> first unit-test, >> but even so it´s not working. >> >> Then, possible solutions: >> 1) Make equality test works from objects that came from >> hibernate from jpa. >> 2) Kill the proxies and make them simple objects (not >> hibernate derivated). >> 3) don´t know, but i´m been realy in a deadline here. >> >> >> again >> thanks for anyone in advance ! >> >> -- >> Guto Maia >> Consultor de TI / Desenvolvedor >> CSM - SCJP- SCWCD - SCBCD - ZCE >> >> >> >> >> >>> In fact, i´m really using JPA with hibernate as an >> provider. >>> >>> Could you send me your hibernate config? I will >> compare some proprieties >>> of tyour hibernate.config with my persistence.xml. >>> >>> I plenty sure that the rule is ok, since it is working >> with the unit test. >>> >>> If you need any help to mimic what your using with >> JPA, just ask. >>> >>> Thanks anyway. >>> >>> >>>> >>>> I'm using non-proxied hibernate backed POJOs >> in drools with no problems. >>>> (THe pojos aer generaed by hbm2java.) I'll >> try configuring for proxies >>>> to >>>> see what happens. >>>> >>>> >>>> --- On Mon, 5/4/09, Gustavo Maia Neto >> <guto(a)guto.net&gt; wrote: >>>> >>>>> From: Gustavo Maia Neto <guto(a)guto.net&gt; >>>>> Subject: Re: [rules-users] Hibernate proxy >> objects equality tests >>>>> failing in Drools 5 >>>>> To: "Rules Users List" >> <rules-users(a)lists.jboss.org&gt; >>>>> Date: Monday, May 4, 2009, 11:28 AM >>>>> on this afternoon I will migrate to Drools 5 >> CR1, >>>>> unfortunelly i'm not >>>>> sure if it will solve my problem. >>>>> >>>>> Does anyone else uses Drools with objects that >> came from an >>>>> hibernate, >>>>> (proxies)? >>>>> >>>>> Also, i'm not using any proxy to fetch >> lazy data inside >>>>> my Drools >>>>> stateful session. >>>>> >>>>> thanks >>>>> >>>>> Guto escreveu: >>>>>> I was following that subject on markmail, >> and them >>>>> I've enterred the >>>>>> user-group (so subject and body are >> coppied from >>>>> them). I've got the >>>>>> exactly same problem. When I use the >> rules with >>>>> objects the came from the >>>>>> database (thru JPA hibernate provider), >> thouse rules >>>>> never match. When I >>>>>> do the same from Pojos hand made for unit >> test, it >>>>> work. >>>>>> >>>>>> I don't know what really happen, but >> i'm sure >>>>> that it is an equality test >>>>>> falling 'cause of the hibernate >> proxys. >>>>>> >>>>>> I don't get also any kind of error or >> exception, >>>>> since it ALL WORK. Just >>>>>> the rule isn't be acomplished. >>>>>> >>>>>> I'm using EJB3 + JPA (hibernate >> provider) and >>>>> Drools 4 GA; >>>>>> >>>>>> thanks in advance for any help >>>>>> >>>>> >>>>> >> _______________________________________________ >>>>> rules-users mailing list >>>>> rules-users(a)lists.jboss.org >>>>> >> https://lists.jboss.org/mailman/listinfo/rules-users >>>> >>>> >>>> >>>> _______________________________________________ >>>> rules-users mailing list >>>> rules-users(a)lists.jboss.org >>>> >> https://lists.jboss.org/mailman/listinfo/rules-users >>>> >>> >>> >>> -- >>> Guto Maia >>> Consultor de TI / Desenvolvedor >>> CSM - SCJP- SCWCD - SCBCD - ZCE >>> >>> _______________________________________________ >>> rules-users mailing list >>> rules-users(a)lists.jboss.org >>> https://lists.jboss.org/mailman/listinfo/rules-users >>> >> >> >> >> >> _______________________________________________ >> rules-users mailing list >> rules-users(a)lists.jboss.org >> https://lists.jboss.org/mailman/listinfo/rules-users > > > > > _______________________________________________ > rules-users mailing list > rules-users(a)lists.jboss.org > https://lists.jboss.org/mailman/listinfo/rules-users > -- Guto Maia Consultor de TI / Desenvolvedor CSM - SCJP- SCWCD - SCBCD - ZCE _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users