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

[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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