[jboss-jira] [JBoss JIRA] (DROOLS-376) NullPointerException on JPAKnowledgeService.loadStatefulKnowledgeSession() when Collection is modified

[RH Bugzilla Integration (JIRA)]

    [ https://issues.jboss.org/browse/DROOLS-376?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12931079#comment-12931079 ] 

RH Bugzilla Integration commented on DROOLS-376:
------------------------------------------------

Mario Fusco <mfusco at redhat.com> changed the Status of [bug 1040889|https://bugzilla.redhat.com/show_bug.cgi?id=1040889] from NEW to ASSIGNED
                
> NullPointerException on JPAKnowledgeService.loadStatefulKnowledgeSession() when Collection is modified
> ------------------------------------------------------------------------------------------------------
>
>                 Key: DROOLS-376
>                 URL: https://issues.jboss.org/browse/DROOLS-376
>             Project: Drools
>          Issue Type: Bug
>      Security Level: Public(Everyone can see) 
>    Affects Versions: 6.0.0.Final
>            Reporter: Toshiya Kobayashi
>            Assignee: Mark Proctor
>
> - Using JPAKnowledgeService
> - Add two or more elements to Collection property which is referred by 'from' in a rule.
> {noformat}
> package org.drools.test
> import org.drools.compiler.Person
> import org.drools.compiler.Address
> rule rule1
> when
>  $p: Person($list : addresses)
>  $a: Address(street == "y") from $list
> then
>  $list.add( new Address("z") );
>  $list.add( new Address("w") );
> end
> {noformat}
> - Call JPAKnowledgeService.loadStatefulKnowledgeSession()
> Then NullPointerException is thrown
> {noformat}
> 2013-12-12 18:03:31,329 [main] |org.drools.persistence.SingleSessionCommandService| WARN  Could not commit session
> java.lang.RuntimeException: Unable to load session snapshot
> 	at org.drools.persistence.SessionMarshallingHelper.loadSnapshot(SessionMarshallingHelper.java:88) ~[classes/:na]
> 	at org.drools.persistence.SingleSessionCommandService.initExistingKnowledgeSession(SingleSessionCommandService.java:264) ~[classes/:na]
> 	at org.drools.persistence.SingleSessionCommandService.<init>(SingleSessionCommandService.java:196) ~[classes/:na]
> 	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) [na:1.7.0_13]
> 	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57) [na:1.7.0_13]
> 	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) [na:1.7.0_13]
> 	at java.lang.reflect.Constructor.newInstance(Constructor.java:525) [na:1.7.0_13]
> 	at org.drools.persistence.jpa.KnowledgeStoreServiceImpl.buildCommandService(KnowledgeStoreServiceImpl.java:101) [classes/:na]
> 	at org.drools.persistence.jpa.KnowledgeStoreServiceImpl.loadKieSession(KnowledgeStoreServiceImpl.java:84) [classes/:na]
> 	at org.drools.persistence.jpa.KnowledgeStoreServiceImpl.loadKieSession(KnowledgeStoreServiceImpl.java:1) [classes/:na]
> 	at org.kie.internal.persistence.jpa.JPAKnowledgeService.loadStatefulKnowledgeSession(JPAKnowledgeService.java:130) [kie-internal-6.1.0-SNAPSHOT.jar:6.1.0-SNAPSHOT]
> 	at org.drools.persistence.session.JpaPersistentStatefulSessionTest.testFromNodeWithModifiedCollection(JpaPersistentStatefulSessionTest.java:562) [test-classes/:na]
> ...
> Caused by: java.lang.NullPointerException: null
> 	at org.drools.core.reteoo.FromNode.createRightTuple(FromNode.java:152) ~[classes/:na]
> 	at org.drools.core.phreak.PhreakFromNode.doLeftInserts(PhreakFromNode.java:96) ~[classes/:na]
> 	at org.drools.core.phreak.PhreakFromNode.doNode(PhreakFromNode.java:49) ~[classes/:na]
> 	at org.drools.core.phreak.RuleNetworkEvaluator.innerEval(RuleNetworkEvaluator.java:348) ~[classes/:na]
> 	at org.drools.core.phreak.RuleNetworkEvaluator.outerEval(RuleNetworkEvaluator.java:161) ~[classes/:na]
> 	at org.drools.core.phreak.RuleNetworkEvaluator.evaluateNetwork(RuleNetworkEvaluator.java:116) ~[classes/:na]
> 	at org.drools.core.phreak.RuleExecutor.reEvaluateNetwork(RuleExecutor.java:200) ~[classes/:na]
> 	at org.drools.core.marshalling.impl.ProtobufInputMarshaller$PBActivationsFilter.fireRNEAs(ProtobufInputMarshaller.java:813) ~[classes/:na]
> 	at org.drools.core.reteoo.LeftInputAdapterNode.doInsertObject(LeftInputAdapterNode.java:258) ~[classes/:na]
> 	at org.drools.core.reteoo.LeftInputAdapterNode.assertObject(LeftInputAdapterNode.java:199) ~[classes/:na]
> 	at org.drools.core.reteoo.SingleObjectSinkAdapter.propagateAssertObject(SingleObjectSinkAdapter.java:60) ~[classes/:na]
> 	at org.drools.core.reteoo.ObjectTypeNode.assertObject(ObjectTypeNode.java:288) ~[classes/:na]
> 	at org.drools.core.reteoo.EntryPointNode.assertObject(EntryPointNode.java:260) ~[classes/:na]
> 	at org.drools.core.marshalling.impl.ProtobufInputMarshaller.assertHandleIntoOTN(ProtobufInputMarshaller.java:499) ~[classes/:na]
> 	at org.drools.core.marshalling.impl.ProtobufInputMarshaller.readFactHandles(ProtobufInputMarshaller.java:476) ~[classes/:na]
> 	at org.drools.core.marshalling.impl.ProtobufInputMarshaller.readSession(ProtobufInputMarshaller.java:250) ~[classes/:na]
> 	at org.drools.core.marshalling.impl.ProtobufInputMarshaller.readSession(ProtobufInputMarshaller.java:157) ~[classes/:na]
> 	at org.drools.core.marshalling.impl.ProtobufMarshaller.unmarshall(ProtobufMarshaller.java:116) ~[classes/:na]
> 	at org.drools.core.marshalling.impl.ProtobufMarshaller.unmarshall(ProtobufMarshaller.java:1) ~[classes/:na]
> 	at org.drools.persistence.SessionMarshallingHelper.loadSnapshot(SessionMarshallingHelper.java:83) ~[classes/:na]
> {noformat}

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