[rules-users] FAIL - getProcessInstances() from persisted StatefulKnowledgeSession

[Esteban Aliverti]

Actually, as far as I remember, getProcessInstances() from a restored
session will ALWAYS return an empty list.

Best,

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Esteban Aliverti
- Developer @ http://www.plugtree.com
- Blog @ http://ilesteban.wordpress.com


2011/3/30 Anderson Neves <anderson.ufal at gmail.com>

> Hi Stephan.
>
> Thank you for the replay. Next time I will read the javadoc before asking
> here.
>
> Regards,
> Anderson
>
> 2011/3/30 <Stephan.Koops at we4it.com>
>
> >
> > Hi,
> >
> > see javadoc of
> org.drools.runtime.process.ProcessRuntime.getProcessInstances():
> >
> >      * Returns a collection of currently active process instances.  Note
> that only process
> >      * instances that are currently loaded and active inside the engine
> will be returned.
> >      * When using persistence, it is likely not all running process
> instances will be loaded
> >      * as their state will be stored persistently.  It is recommended not
> to use this
> >      * method to collect information about the state of your process
> instances but to use
> >      * a history log for that purpose.
> >
> > If no instance is loaded yet, that this behaviour is exactly as
> described.
> >
> > Mit freundlichen Grüssen/Best regards
> >
> > i. A.
> > Stephan Koops
> > Software Engineer
> > We4IT GmbH
> >
> >
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> > From: Anderson Neves <anderson.ufal at gmail.com>
> > To: Rules Users List <rules-users at lists.jboss.org>
> > Date: 30.03.2011 05:34
> > Subject: [rules-users] FAIL - getProcessInstances() from persisted
>  StatefulKnowledgeSession
> > ________________________________
> >
> >
> > Hi everybody.
> >
> > I configured the session persistence and persisted an instantiated
> process. When I get the session from the database and use the method
> getProcessInstances(), it returns an empty collection. But, when I call
> getProcessInstance(1), and 1 is the InstanceId of the ProcessInstanceInfo
> (table that contains the process instance), I get the correct process
> instance. Is this a bug? See the code below.
> >
> > statefulSession =
> JPAKnowledgeService.loadStatefulKnowledgeSession(sessionId, knowledgeBase,
> null, environment);
> >
> > Collation<ProcessInstance> processInstances =
> statefulSession.getProcessInstances(); // FAIL - return empty collection
> >
> > ProcessInstance processInstance = statefulSession.getProcessInstance(1);
> // OK - return the process instance
> >
> >
> > Regards,
> > Anderson_______________________________________________
> > rules-users mailing list
> > rules-users at lists.jboss.org
> > https://lists.jboss.org/mailman/listinfo/rules-users
> >
> >
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> >
>
>
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