[jboss-jira] [JBoss JIRA] Created: (JBRULES-3137) NullPointerException in FromNode.destroyCreatedHandles
NullPointerException in FromNode.destroyCreatedHandles
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Key: JBRULES-3137
URL: https://issues.jboss.org/browse/JBRULES-3137
Project: Drools
Issue Type: Bug
Security Level: Public (Everyone can see)
Components: drools-core
Reporter: Alessandro Lazarotti
Assignee: Mark Proctor
Fix For: 5.2.0.CR1
I received this NullPointerException after upgrading to drools 5.1.1. The
NullPointerException is being thrown when the rule executes "update($build);"
where $build is set in the LHS from a Build in working memory. I'm not sure if the
bug is that matches may be null and a null check needs to be added or if something else is
going on causing the tuple to not be found.
Caused by: java.lang.NullPointerException
at org.drools.reteoo.FromNode.destroyCreatedHandles(FromNode.java:336)
at org.drools.reteoo.FromNode.retractLeftTuple(FromNode.java:326)
at
org.drools.reteoo.CompositeLeftTupleSinkAdapter.doPropagateRetractLeftTuple(CompositeLeftTupleSinkAdapter.java:238)
at
org.drools.reteoo.CompositeLeftTupleSinkAdapter.propagateRetractRightTuple(CompositeLeftTupleSinkAdapter.java:155)
at org.drools.reteoo.JoinNode.retractRightTuple(JoinNode.java:151)
at org.drools.reteoo.ModifyPreviousTuples.retractTuples(ModifyPreviousTuples.java:126)
at org.drools.reteoo.EntryPointNode.modifyObject(EntryPointNode.java:176)
at org.drools.common.AbstractWorkingMemory.update(AbstractWorkingMemory.java:1442)
at org.drools.common.AbstractWorkingMemory.update(AbstractWorkingMemory.java:1349)
at org.drools.base.DefaultKnowledgeHelper.update(DefaultKnowledgeHelper.java:183)
at org.drools.base.DefaultKnowledgeHelper.update(DefaultKnowledgeHelper.java:196)
at
buildSchedulerV2.Rule_Combine_Builds_0.defaultConsequence(Rule_Combine_Builds_0.java:36)
at
buildSchedulerV2.Rule_Combine_Builds_0DefaultConsequenceInvoker.evaluate(Rule_Combine_Builds_0DefaultConsequenceInvoker.java:49)
at org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:917)
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