[jbpm-dev] [Design of JBoss jBPM] - Enterprise Structure for JBPM4

[bradsdavis]

With JBPM 3, we have switched between EARs and SARs.  

This has caused a bit of confusion and also has made things a bit complicated in terms of loader-repositories.

One large jBPM client does use a dedicated loader-repository with their application, and supporting dedicated loader-repositories would be a nice thing for 4.  I am not sure how this model changes for JBoss 5 though.

I know with the current jBPM 3, there are a few steps to getting the loader repository to work, including moving the jbpm-enterprise.jar, and having to add the loader-repository in several configurations.  The nice thing about the EAR deployment was that it only required one configuration change to have jBPM participate in a given loader-repository in JBoss.

Before we move to 4, we should put as much thought into packaging as we do into the architecture to ensure that it will work with a number of different client setups.  This would include:

1) Loader Repositories
2) EJB Integration

I know there was talks on the forum of having a ThreadLocal type solution to calling jBPM within EJB, such that opening the context wouldnt occur multiple times for nested EJB calls.  Has this been investigated for 4?

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