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jBPM persistent session ids

created by Jason Jho in jBPM - View the full discussion

I am using jBPM 5.2.0 and I have a question about ksession ids.  My understanding is that this session ID is used to reload a persisted session, but there is no clear indication how this is supposed to work when a server is restarted.  For example, if I have a session ID [1] for a workflow process that is persisted and the server goes down, I can reload the session back to it's previous state using this same ID.  However, how am I guaranteed that any new session ID created by the same knowledge base will be uniquely different from the persisted ID?

 

Ex:

 

int id = ksession.getId() ...

startProcess(...)

 

// server shuts down - restarts

int savedId = geSavedId();

session = JPAKnowledgeService.loadStatefulKnowledgeSession(savedId, kbase, null, env);

 

newSession = kbase.newStatelessKnowledgeSession(...)

newSession.getId() = ???

 

 

In the above scenario, could it be possible for newSession.getId() to have the same integer value as the previously saved ID?

If so, how would one be able to distinguish the 2 different sessions?

 

 

Thanks for any help.

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