[jboss-user] [jBPM] - Resuming processes revisited

[Richard Evans]

Richard Evans [https://community.jboss.org/people/r3vans] created the discussion

"Resuming processes revisited"

To view the discussion, visit: https://community.jboss.org/message/745059#745059

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Firstly apologies for creating a new thread on an oft-discussed topic. This is partly because I want to make sure I get up-to-date info and partly because there is a new question in here.

JBPM 5.3
I have a number of processes with *100% async* service handlers. Many of the processes have handlers that poll a back-end for data, driven by a timer (delay=30s).


I am trying to resume after halt. By default I use a kSession created in in a spring context using the <drools:> namespace. As the config is fairly complex I use this to help me restore the session as follows. If I restore the session, I don't use the default session

kSession = JPAKnowledgeService.loadStatefulKnowledgeSession(id,
                                                            kSession.getKnowledgeBase(),
                                                            kSession.getSessionConfiguration(),
                                                            kSession.getEnvironment());

//?kSession.signalEvent("Trigger", null);  //Seen this in one post?


Q1. Is there any reason I should NOT initialise from a prev ksession like this? I don’t want to have to create env and config in code as well as spring config

Q2. Should processes resume without further action (they don’t, even if not timers)

Q3. Should timers resume in 5.3? I know that this has been a subject of hot debate in the past.

Q4. If not, any suggestions on how to 

* - EITHER resume processes stuck on timers
* - OR implement polling without timers (e.g. halt processes awaiting an a signal from an externally scheduled call to kSession.signalEvent())

Thanks in anticipation.
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