[jboss-jira] [JBoss JIRA] Commented: (JBRULES-627) null pointer with number comparison..
Mark Proctor (JIRA)
jira-events at lists.jboss.org
Thu Apr 12 09:35:59 EDT 2007
[ http://jira.jboss.com/jira/browse/JBRULES-627?page=comments#action_12359103 ]
Mark Proctor commented on JBRULES-627:
--------------------------------------
mic, I know you where working on this area. Is this now resolved to a satisfactory solution?
> null pointer with number comparison..
> -------------------------------------
>
> Key: JBRULES-627
> URL: http://jira.jboss.com/jira/browse/JBRULES-627
> Project: JBoss Rules
> Issue Type: Bug
> Security Level: Public(Everyone can see)
> Affects Versions: 3.0.4
> Environment: Windows XP or Solaris
> Sun JDK 1.4.2
> Drools 3.0.4 distribution
> Reporter: Sachin Holla
> Assigned To: Mark Proctor
>
> getting a null pointer while asserting fact:
> Caused by: java.lang.NullPointerException
> at org.drools.base.evaluators.IntegerFactory$IntegerGreaterEvaluator.evaluate(Unknown Source)
> at org.drools.rule.BoundVariableConstraint.isAllowed(Unknown Source)
> at org.drools.common.BetaNodeBinder.isAllowed(Unknown Source)
> at org.drools.reteoo.TupleSource.attemptJoin(Unknown Source)
> at org.drools.reteoo.JoinNode.assertTuple(Unknown Source)
> at org.drools.reteoo.LeftInputAdapterNode.createAndAssertTuple(Unknown Source)
> at org.drools.reteoo.LeftInputAdapterNode.assertObject(Unknown Source)
> at org.drools.reteoo.ObjectSource.propagateAssertObject(Unknown Source)
> at org.drools.reteoo.ObjectTypeNode.assertObject(Unknown Source)
> at org.drools.reteoo.Rete.assertObject(Unknown Source)
> at org.drools.reteoo.ReteooRuleBase.assertObject(Unknown Source)
> at org.drools.reteoo.ReteooWorkingMemory.doAssertObject(Unknown Source)
> at org.drools.common.AbstractWorkingMemory.assertObject(Unknown Source)
> at org.drools.common.AbstractWorkingMemory.assertObject(Unknown Source)
> Rule is something like this:
> rule "Greater Than with NULL number!!"
> when
> MyFact ( integerAttribute > 10 )
> then
> .....
> end
> the *intergerAttribute* is of type java.lang.Integer and value is *null*.
> no such problem if expression changed to *integerAttribute == 10* or !=
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