[jboss-jira] [JBoss JIRA] Created: (JBRULES-1558) || in conditional element causes exception

[Juraj Bednar (JIRA)]

|| in conditional element causes exception
------------------------------------------

                 Key: JBRULES-1558
                 URL: http://jira.jboss.com/jira/browse/JBRULES-1558
             Project: JBoss Drools
          Issue Type: Bug
      Security Level: Public (Everyone can see)
          Components: Reteoo
    Affects Versions: 4.0.4
            Reporter: Juraj Bednar
         Assigned To: Mark Proctor
            Priority: Minor


rule "testRule"
  dialect "mvel"
  when
   $m : TestFact ( booleanTest == true && (number <= 100 || number >= (anotherNumber * 2)))
  then
   System.out.println("Error");
end

("&&" can be also replaced by "," having the same effect)

This rule compiles well and in runtime, when booleanTest becomes true, it creates this Runtime exception:

org.drools.RuntimeDroolsException: Exception executing ReturnValue constraint org.drools.rule.ReturnValueRestriction at 3f3d9830 : java.lang.ClassCastException: org.drools.rule.AbstractCompositeConstraint$MultiFieldConstraintContextEntry cannot be cast to org.drools.rule.ReturnValueRestriction$ReturnValueContextEntry
	at org.drools.rule.ReturnValueConstraint.isAllowed(ReturnValueConstraint.java:102)
	at org.drools.rule.OrConstraint.isAllowed(OrConstraint.java:50)
	at org.drools.reteoo.AlphaNode.assertObject(AlphaNode.java:137)
	at org.drools.reteoo.CompositeObjectSinkAdapter.propagateAssertObject(CompositeObjectSinkAdapter.java:318)
	at org.drools.reteoo.AlphaNode.assertObject(AlphaNode.java:145)
	at org.drools.reteoo.CompositeObjectSinkAdapter.propagateAssertObject(CompositeObjectSinkAdapter.java:309)
	at org.drools.reteoo.ObjectTypeNode.assertObject(ObjectTypeNode.java:153)
	at org.drools.reteoo.Rete.assertObject(Rete.java:175)
	at org.drools.reteoo.ReteooRuleBase.assertObject(ReteooRuleBase.java:192)
	at org.drools.reteoo.ReteooWorkingMemory.doInsert(ReteooWorkingMemory.java:71)
	at org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:915)
	at org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:887)
	at org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:688)
	at spairal.sensors.AbstractSensor.collectData(AbstractSensor.java:60)
	at spairal.SensorManager$1.run(SensorManager.java:55)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)
	at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:287)
	at java.util.concurrent.FutureTask.run(FutureTask.java:138)
	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:679)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:704)
	at java.lang.Thread.run(Thread.java:637)
Caused by: org.drools.RuntimeDroolsException: java.lang.ClassCastException: org.drools.rule.AbstractCompositeConstraint$MultiFieldConstraintContextEntry cannot be cast to org.drools.rule.ReturnValueRestriction$ReturnValueContextEntry
	at org.drools.rule.ReturnValueRestriction.isAllowed(ReturnValueRestriction.java:175)
	at org.drools.rule.ReturnValueConstraint.isAllowed(ReturnValueConstraint.java:96)
	... 20 more
Caused by: java.lang.ClassCastException: org.drools.rule.AbstractCompositeConstraint$MultiFieldConstraintContextEntry cannot be cast to org.drools.rule.ReturnValueRestriction$ReturnValueContextEntry
	at org.drools.rule.ReturnValueRestriction.isAllowed(ReturnValueRestriction.java:165)
	... 21 more


The syntax is OK according to documentation:

-----
It is possible to change the evaluation priority by using parenthesis, as in any logic or mathematical expression. Example:

Example 6.10. Using parenthesis to change evaluation priority

# Cheese type is stilton and ( price is less than 20 or age is mature ).
Cheese( type == "stilton" && ( price < 20 || age == "mature" ) ) 
-----

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