[jboss-jira] [JBoss JIRA] (JBRULES-3375) Adding ProcessEventListener throws NPE

[Mario Fusco (JIRA)]

     [ https://issues.jboss.org/browse/JBRULES-3375?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Mario Fusco resolved JBRULES-3375.
----------------------------------

    Fix Version/s: 5.4.0.CR1
       Resolution: Done

    
> Adding ProcessEventListener throws NPE
> --------------------------------------
>
>                 Key: JBRULES-3375
>                 URL: https://issues.jboss.org/browse/JBRULES-3375
>             Project: Drools
>          Issue Type: Bug
>      Security Level: Public(Everyone can see) 
>            Reporter: Mario Fusco
>            Assignee: Mario Fusco
>             Fix For: 5.4.0.CR1
>
>
> Description of problem:
> When you try to add a ProcessEventListener to StatefulKnowledgeSession and you
> are missing jBPM libraries on classpath, you get a NullPointerException.
> Version-Release number of selected component (if applicable):
> BRMS-5.3.0.dev5
> Drools-5.3.0.Final
> How reproducible:
> Using attached reproducer.
> Steps to Reproduce:
> 1. Make sure you don't have any jBPM libs on classpath
> 2. Create stateful session
> 3. Add ProcesEventListener (e.g. DebugProcessEventListener)
> Actual results:
> java.lang.NullPointerException
>  at
> org.drools.impl.StatefulKnowledgeSessionImpl.addEventListener(StatefulKnowledgeSessionImpl.java:199)
>  at org.sample.TryProcessListener.main(TryProcessListener.java:20)
> Expected results:
> Either meaningful exception (like NojBPMException) or correct addition of
> listener
> Additional info:
> It only affects StatefulKnowledgeSession, the StatefulKnowledgeSession runs
> just fine.

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