is it possible to use jBPM with TopLink instead of Hibernate

[npirard]

Hello,

pardon the newbie question, but I am looking for a BPM solution that would not require Hibernate, since we use Glassfish + TopLink, and I suspect having both TopLink and Hibernate could cause problems

hence my question : is it possible to use jBPM without Hibernate, or is Hibernate a requirement ?

if it were possible to adapt things so that jBPM uses TopLink instead of Hibernate, any idea of the amount of work that would be involved ?

thank you !

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Nicolas

[jbarrez]

For the moment it is hard to separate jBPM from Hibernate. It would require several hacks which possibly lead to strange situations.

But the research for switching to JPA is on the roadmap (but I don't know when that will be)

[npirard]

thank you jbarrez for the quick answer. Too bad for now ;-)

anyway, do you know of an open BPM solution that would work with TopLink ?

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Nicolas

[kukeltje]

No, not that I know of. May I ask why it is that important to have jBPM use TopLink instead of Hibernate? Most of this is behind the scenes and you can have your own datamodel for your businessdata accessed via TopLink and have both particiate in the same transaction. You just do not store that much information from your datamodel in jBPM then, just some references.

[npirard]

> you can have your own datamodel for your businessdata accessed via TopLink and have both participate in the same transaction.

well then, I should give it a try, thanks for the advice. Did you actually do it, or see it working?

in my project they had already problems trying to use Hibernate with our Glassfish, and I thought having both Hibernate and TopLink could lead to strange behaviors.

but I am new to BPM, and I appreciate your answer, since it is a bit difficult for me to understand all implications without experience

thanks !

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Nicolas

[kukeltje]

I did not see it working literally, but did hear someone did the same with IBatis.

And yes, if there are library conflicts, between hibernate and toplink, that can be a problem (nothing to do with jBPM then).

But jBPM can be accessed 'remotely', so you could deploy it in it's own war or something and maybe prevent classloader problems.

[melgamal]

Nicolas,

i faced the same problem about using jBPM in a project useing toplink as a presistance mapping , but i do it and it is working, realy i faced some problems about lib conflects but it solved.
also take care about the application server u will delpoy on, if using OAS you will face a lot of problems. I'm still trying deploy under OAS 10g but didnt finished yet, whover deployed successfully under Tomcat6.

Mohamed

[npirard]

Thank you Ronald and Mohamed !

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Nicolas