[rules-users] Bug in "enabled" rule attribute???

[bdolbeare]

The following DRL produces a Null Pointer Exception when the "enabled"
attribute is set to false on "test rule 2".  Any ideas why?  Changing this
value to true or commenting out the rule causes things to succeed.

Environment:  Java 7 and Drools 5.4


package tests

import org.apache.log4j.Logger;

import java.util.List;

global Logger log

declare Data
	name : String
end

rule "insert Data"
	when
	then
		insert(new Data("test"));
end

rule "test rule 2"
enabled false
	when		
		d : List() from collect (Data( name == "test") )
	then
		log.info(String.format("%s hit on %s", kcontext.getRule().getName(), d)); 
end



Exception executing consequence for rule "insert Data" in tests:
java.lang.NullPointerException
	at
org.drools.runtime.rule.impl.DefaultConsequenceExceptionHandler.handleException(DefaultConsequenceExceptionHandler.java:39)
	at org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:1283)
	at org.drools.common.DefaultAgenda.fireNextItem(DefaultAgenda.java:1209)
	at org.drools.common.DefaultAgenda.fireAllRules(DefaultAgenda.java:1442)
	at
org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:710)
	at
org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:674)
	at
org.drools.impl.StatefulKnowledgeSessionImpl.fireAllRules(StatefulKnowledgeSessionImpl.java:230)
	at
org.drools.impl.StatelessKnowledgeSessionImpl.execute(StatelessKnowledgeSessionImpl.java:278)
	at tests.DroolsTest.testStateless(DroolsTest.java:98)
	at tests.DroolsTest.runTest(DroolsTest.java:60)
	at tests.DroolsTest.main(DroolsTest.java:45)
Caused by: java.lang.NullPointerException
	at org.drools.common.DefaultAgenda.createActivation(DefaultAgenda.java:569)
	at
org.drools.reteoo.RuleTerminalNode.modifyLeftTuple(RuleTerminalNode.java:297)
	at
org.drools.reteoo.SingleLeftTupleSinkAdapter.propagateModifyChildLeftTuple(SingleLeftTupleSinkAdapter.java:259)
	at
org.drools.reteoo.AccumulateNode.evaluateResultConstraints(AccumulateNode.java:676)
	at
org.drools.reteoo.ReteooWorkingMemory$EvaluateResultConstraints.execute(ReteooWorkingMemory.java:591)
	at
org.drools.common.PropagationContextImpl.evaluateActionQueue(PropagationContextImpl.java:345)
	at org.drools.common.NamedEntryPoint.insert(NamedEntryPoint.java:342)
	at org.drools.common.NamedEntryPoint.insert(NamedEntryPoint.java:298)
	at
org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:888)
	at
org.drools.base.DefaultKnowledgeHelper.insert(DefaultKnowledgeHelper.java:187)
	at
org.drools.base.DefaultKnowledgeHelper.insert(DefaultKnowledgeHelper.java:181)
	at
tests.Rule_insert_Data_2eb7a40b15e640d6bc777e1075d1218b.defaultConsequence(Rule_insert_Data_2eb7a40b15e640d6bc777e1075d1218b.java:7)
	at
tests.Rule_insert_Data_2eb7a40b15e640d6bc777e1075d1218bDefaultConsequenceInvokerGenerated.evaluate(Unknown
Source)
	at
tests.Rule_insert_Data_2eb7a40b15e640d6bc777e1075d1218bDefaultConsequenceInvoker.evaluate(Unknown
Source)
	at org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:1273)



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