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

[Guto]

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 at guto.net> wrote:
>>
>>> From: Gustavo Maia Neto <guto at guto.net>
>>> Subject: Re: [rules-users] Hibernate proxy objects equality tests
>>> failing in Drools 5
>>> To: "Rules Users List" <rules-users at lists.jboss.org>
>>> 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 at lists.jboss.org
>>> https://lists.jboss.org/mailman/listinfo/rules-users
>>
>>
>>
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>
>
> --
> Guto Maia
> Consultor de TI / Desenvolvedor
> CSM - SCJP- SCWCD - SCBCD - ZCE
>
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