[jboss-jira] [JBoss JIRA] Updated: (JBRULES-2090) StatelessKnowledgeSessions created by KnowledgeAgent causes NullPointerException when used in a pipeline

[David Zeigler (JIRA)]

     [ https://jira.jboss.org/jira/browse/JBRULES-2090?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

David Zeigler updated JBRULES-2090:
-----------------------------------

    Attachment: KnowledgeAgentTest.java.patch


> StatelessKnowledgeSessions created by KnowledgeAgent causes NullPointerException when used in a pipeline
> --------------------------------------------------------------------------------------------------------
>
>                 Key: JBRULES-2090
>                 URL: https://jira.jboss.org/jira/browse/JBRULES-2090
>             Project: JBoss Drools
>          Issue Type: Bug
>      Security Level: Public(Everyone can see) 
>          Components: drools-compiler
>         Environment: 5.0.1.SNAPSHOT for May 12, 2009
>            Reporter: David Zeigler
>            Assignee: Mark Proctor
>         Attachments: KnowledgeAgentTest.java.patch
>
>
> This issue is related to this thread on the user-list:  http://www.mail-archive.com/rules-users@lists.jboss.org/msg08770.html
> I'm getting a NullPointerException when I insert an object into
> the pipeline using 5.0.1.SNAPSHOT from May 12, 2009:
> java.lang.NullPointerException
>         at 
> org.drools.runtime.pipeline.impl.StatelessKnowledgeSessionPipelineImpl.insert(StatelessKnowledgeSessionPipelineImpl.java:24)
> It looks like StatelessKnowledgeSession's ruleBase is null when created by the KnowledgeAgent, which poses a problem since StatelessKnowledgeSessionPipelineImpl invokes getRootClassLoader() on the session's ruleBase.
> Here's what I'm doing:
> StatelessKnowledgeSession ksession = kagent.newStatelessKnowledgeSession();
> Pipeline pipeline =
> PipelineFactory.newStatelessKnowledgeSessionPipeline(ksession);
> pipeline.setReceiver(messageTransformer);
> pipeline.insert(message);  // NPE here
> I'll attach a patch to KnowledgeAgentTest containing a failing test case.

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