[jboss-user] [jBPM] - Using jBPM5 in JEE6

[Tair Sabirgaliev]

Tair Sabirgaliev [http://community.jboss.org/people/tair.sabirgaliev] created the discussion

"Using jBPM5 in JEE6"

To view the discussion, visit: http://community.jboss.org/message/608826#608826

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What is the best way to interact with persistent jBPM5 engine in JEE6 application?

I'm learning jBPM5 and by the way trying to embed it in a JEE6 web application to build a simple BPM console . So far I come up with these design:

@ApplicationScoped KnowledgeBase

@???Scoped StatefulKnowledgeSession

@RequestScoped ProcessInstance

I'm stuck with deciding the scope for StatefulKnowledgeSession, because I can't understand the relation between ksessions and processInstances. I looked into code of jbpm-gwt-console and found that it uses single application-wide ksession. It is loaded from DB if found with id=1, otherwise new ksession is created.

So my questions are:
1) Does a processInstance exclusively belong to a particular ksession?

2) If (1) = YES. Imagine I have a processInstanceId, then how I load the ksession it belongs to?

3) If (1) = NO, is it safe to use a new ksession to operate on an already started processInstance?
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