Bug 1005165

Summary:	CCE when using negative patterns without turning on STREAM mode
Product:	[Retired] JBoss BRMS Platform 6	Reporter:	Marek Winkler <mwinkler>
Component:	BRE	Assignee:	Mario Fusco <mfusco>
Status:	CLOSED CURRENTRELEASE	QA Contact:	Tomas David <tdavid>
Severity:	low	Docs Contact:
Priority:	unspecified
Version:	6.0.0
Target Milestone:	ER4
Target Release:	6.0.0
Hardware:	Unspecified
OS:	Unspecified
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Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2014-08-06 20:19:26 UTC	Type:	Bug
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Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description Marek Winkler 2013-09-06 10:43:44 UTC

Description of problem:

A ClassCastException comes up when using negative patterns without setting event processing mode to STREAM.

This configuration does not really make sense, but a warning or an error indicating what the real problem is should be emitted, instead of a general CCE.

The exception stacktrace:

java.lang.ClassCastException: org.drools.core.reteoo.RuleTerminalNodeLeftTuple cannot be cast to org.drools.core.time.impl.DefaultJobHandle
	at org.drools.core.phreak.PhreakTimerNode.doLeftDeletes(PhreakTimerNode.java:154)
	at org.drools.core.phreak.PhreakTimerNode.doNode(PhreakTimerNode.java:59)
	at org.drools.core.phreak.RuleNetworkEvaluator.innerEval(RuleNetworkEvaluator.java:360)
	at org.drools.core.phreak.RuleNetworkEvaluator.outerEval(RuleNetworkEvaluator.java:162)
	at org.drools.core.phreak.RuleNetworkEvaluator.evaluateNetwork(RuleNetworkEvaluator.java:117)
	at org.drools.core.phreak.RuleExecutor.reEvaluateNetwork(RuleExecutor.java:205)
	at org.drools.core.phreak.RuleExecutor.evaluateNetworkAndFire(RuleExecutor.java:65)
	at org.drools.core.common.DefaultAgenda.fireNextItem(DefaultAgenda.java:936)
	at org.drools.core.common.DefaultAgenda.fireAllRules(DefaultAgenda.java:1183)
	at org.drools.core.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:936)
	at org.drools.core.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:910)
	at org.drools.core.impl.StatefulKnowledgeSessionImpl.fireAllRules(StatefulKnowledgeSessionImpl.java:233)
	at org.drools.compiler.integrationtests.NegativePatternsTest.testSingleEvent(NegativePatternsTest.java:140)


Version-Release number of selected component (if applicable):

Drools 6.0.0-SNAPSHOT
BRMS 6.0.0-ER2

How reproducible:

Remove line 98: .setEventProcessingMode(EventProcessingOption.STREAM); in the org.drools.compiler.integrationtests.NegativePatternsTest class and run tests from this class.

Comment 1 Mario Fusco 2013-09-13 18:30:22 UTC

It is not possible to raise a compilation error in this case because the EventProcessingMode is a KieBase option and then it is not available at compile time.

What I did is to throw a RuntimeException when you try to create such a kieBase saying:

java.lang.RuntimeException: The requested KieBase "KBase" has been set to run in CLOUD mode but requires features only available in STREAM mode

I added a test case demonstrating this here:

https://github.com/droolsjbpm/drools/blob/69dd8626bb40cd86dd59247a908aa8f212b5eb84/drools-compiler/src/test/java/org/drools/compiler/integrationtests/CepEspTest.java#L3210

Comment 5 Tomas David 2013-10-14 10:08:28 UTC

Verified on BRMS 6.0.0.ER4.