[jboss-jira] [JBoss JIRA] (JBRULES-3150) NPE in ObjectTypeConfigurationRegistry when accumulate returns null (and "quick hack for 5.2")

[Mario Fusco (Resolved) (JIRA)]

     [ https://issues.jboss.org/browse/JBRULES-3150?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Mario Fusco resolved JBRULES-3150.
----------------------------------

    Resolution: Done

    
> NPE in ObjectTypeConfigurationRegistry when accumulate returns null (and "quick hack for 5.2")
> ----------------------------------------------------------------------------------------------
>
>                 Key: JBRULES-3150
>                 URL: https://issues.jboss.org/browse/JBRULES-3150
>             Project: Drools
>          Issue Type: Bug
>      Security Level: Public(Everyone can see) 
>          Components: drools-core  (expert)
>    Affects Versions: 5.2.0.Final
>            Reporter: Wolfgang Laun
>            Assignee: Mario Fusco
>             Fix For: 5.2.1.Final
>
>
> rule foo # the problem is usually better "hidden"
> when
> Object() from accumulate( Object(),
>   init( Object res = null; )
>   action( res = null; )
>   result( res ) )
> then
> end
> causes the exception as shown below, or similar.
> A runtime diagnostic should tell the user (at least) that
> an accumulate result is null.
> ALSO, PLEASE NOTE THIS COMMENT in AccumulateNode.java:642!
> // this is a quick hack for the 5.2 release
> Exception in thread "main" java.lang.NullPointerException
> 	at org.drools.common.ObjectTypeConfigurationRegistry.getObjectTypeConf(ObjectTypeConfigurationRegistry.java:58)
> 	at org.drools.reteoo.AccumulateNode.evaluateResultConstraints(AccumulateNode.java:646)
> 	at org.drools.reteoo.AccumulateNode.assertLeftTuple(AccumulateNode.java:183)
> 	at org.drools.reteoo.SingleLeftTupleSinkAdapter.doPropagateAssertLeftTuple(SingleLeftTupleSinkAdapter.java:197)
> 	at org.drools.reteoo.SingleLeftTupleSinkAdapter.createAndPropagateAssertLeftTuple(SingleLeftTupleSinkAdapter.java:146)
> 	at org.drools.reteoo.LeftInputAdapterNode.assertObject(LeftInputAdapterNode.java:154)
> 	at org.drools.reteoo.SingleObjectSinkAdapter.propagateAssertObject(SingleObjectSinkAdapter.java:59)
> 	at org.drools.reteoo.ObjectTypeNode.assertObject(ObjectTypeNode.java:204)
> 	at org.drools.reteoo.EntryPointNode.assertObject(EntryPointNode.java:191)
> 	at org.drools.common.NamedEntryPoint.insert(NamedEntryPoint.java:332)
> 	at org.drools.common.NamedEntryPoint.insert(NamedEntryPoint.java:293)
> 	at org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:905)
> 	at org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:864)
> 	at org.drools.impl.StatefulKnowledgeSessionImpl.insert(StatefulKnowledgeSessionImpl.java:255)
> 	at match.Main.makeFacts(Main.java:120)
> 	at match.Main.execute(Main.java:98)
> 	at match.Main.main(Main.java:126)

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