[jboss-jira] [JBoss JIRA] Created: (JBRULES-1142) nested accessors on the lhs of the memberOf (or not memberOf) operator lead to an exception

[andreas kinell (JIRA)]

nested accessors on the lhs of the memberOf (or not memberOf) operator lead to an exception
-------------------------------------------------------------------------------------------

                 Key: JBRULES-1142
                 URL: http://jira.jboss.com/jira/browse/JBRULES-1142
             Project: JBoss Rules
          Issue Type: Bug
      Security Level: Public (Everyone can see)
    Affects Versions:  4.0.0.GA
         Environment: Windows XP, Java 1.5, Drools 4.0.0.GA
            Reporter: andreas kinell
         Assigned To: Mark Proctor


nested accessors on the lhs of the memberOf (or not memberOf) operator lead to an exception:

business logic (pseudocode):

class Position {
   private Instrument instrument;
}
class Instrument {
   private Currency currency;
}

with getters and setters.

rule:

$collection : Collection()
$position : Position(instrument.currency not memberOf $collection)

exception:

org.drools.RuntimeDroolsException: Exception executing predicate org.drools.base.mvel.MVELPredicateExpression at 1f99eea
	at org.drools.rule.PredicateConstraint.isAllowedCachedLeft(PredicateConstraint.java:212)
	at org.drools.common.SingleBetaConstraints.isAllowedCachedLeft(SingleBetaConstraints.java:110)
	at org.drools.reteoo.JoinNode.assertTuple(JoinNode.java:119)
	at org.drools.reteoo.SingleTupleSinkAdapter.propagateAssertTuple(SingleTupleSinkAdapter.java:20)
	at org.drools.reteoo.JoinNode.assertObject(JoinNode.java:162)
	at org.drools.reteoo.CompositeObjectSinkAdapter.propagateAssertObject(CompositeObjectSinkAdapter.java:317)
	at org.drools.reteoo.ObjectTypeNode.assertObject(ObjectTypeNode.java:168)
	at org.drools.reteoo.Rete.assertObject(Rete.java:168)
	at org.drools.reteoo.ReteooRuleBase.assertObject(ReteooRuleBase.java:190)
	at org.drools.reteoo.ReteooWorkingMemory.doInsert(ReteooWorkingMemory.java:70)
	at org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:848)
	at org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:822)
	at org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:623)
	at test.RuleTest.testRuleEngine1(RuleTest.java:99)
Caused by: java.lang.ClassCastException: test.Currency
	at org.drools.base.mvel.MVELPredicateExpression.evaluate(MVELPredicateExpression.java:36)
	at org.drools.rule.PredicateConstraint.isAllowedCachedLeft(PredicateConstraint.java:206)
	... 33 more



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