Geoff Pole [
http://community.jboss.org/people/instanceof] created the discussion
"StatefulKnowledgeSession signalEvent method"
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http://community.jboss.org/message/627040#627040
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Hi,
Can anyone help me to understand why the signalEvent method on the
StatefulKnowledgeSession calls the ProcessInstancesWaitingForEvent query even when I
provide the processInstanceId parameter?
The ProcessInstancesWaitingForEvent seems to retrieve all workflow instances that are
awaititing a particular event.
I am seeing this behaviour in the context of this workflow:
http://community.jboss.org/servlet/JiveServlet/showImage/2-627040-16993/d...
http://community.jboss.org/servlet/JiveServlet/downloadImage/2-627040-169...
When I start the workflow with process variables that make it take the lower path the
workflow begins and waits for the first signal.
|
|
| ProcessInstance process =
session.startProcess("com.bluecycle.zephyr.workflow.data-v0.0.2",
processVariables); |
At this point I am able to signal the first event and the ProcessInstancesWaitingForEvent
is NOT called. The workflow quickly moves and waits for the second signal.
|
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| session.signalEvent("Signal1", null, process.getId()); |
|
At this point I can signal the second event which does succeed but this time it appeas to
be calling the ProcessInstancesWaitingForEvent query to find all workflows waiting for the
signal2 event..
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| session.signalEvent("Signal2", null, process.getId()); |
|
The time that this takes is directly proportional to the number of workflow instances that
I have waiting for the signal2 event.
Can anyone help me to understand why ProcessInstancesWaitingForEvent is being called? It
seems like this is unnessercary given that I am providing the processInsnanceId. Also
I'm not sure why this happens when I signal event 2, but not when I signal event 1.
The jbpm versions I have used are the ones bundled in the jbpm 5.10-Final installer
download.
Thanks very much,
Geoff
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