[jboss-jira] [JBoss JIRA] (DROOLS-1685) Improve performance of rules using "or" in LHS

[Tibor Zimányi (JIRA)]

     [ https://issues.jboss.org/browse/DROOLS-1685?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Tibor Zimányi closed DROOLS-1685.
---------------------------------
    Resolution: Cannot Reproduce


> Improve performance of rules using "or" in LHS
> ----------------------------------------------
>
>                 Key: DROOLS-1685
>                 URL: https://issues.jboss.org/browse/DROOLS-1685
>             Project: Drools
>          Issue Type: Enhancement
>          Components: core engine, kie server
>    Affects Versions: 6.5.0.Final
>            Reporter: Russell Morrisey
>            Assignee: Mario Fusco
>
> The following two rulesets produce the same output, but their performance differs dramatically.
> My understanding is that the two rulesets should be equivalent to one another. It seems like the 'or' operation must be handled inefficiently by the engine. Is there anything that can be improved the engine's performance in this case?
> Ruleset #1 takes ~3 seconds to execute on my local machine (for a dataset with 3 entities, 1 service ordered each). Ruleset #2 runs in ~200 ms.
> *Ruleset 1*
> {code:java}
> rule "Rule183"
> 	dialect "mvel"
> 	when
> 		$entity : Entity( )
> 		( $service : ServiceOrdered( serviceId == "FORM" , entity == $entity , entity.entityTypeId in ( 291262, 291275, 291277 ) ) or $service : ServiceOrdered( serviceId == "DISSO" , entity == $entity , entity.entityTypeId in ( 291262 ) , stateId == 290864 ) )
> 		$r1 : QuestionDefinition( id == 590 )
> 	then
> 		Question fact0 = new Question();
> 		fact0.setQuestionDefinition( $r1 );
> 		fact0.setEntity( $entity );
> 		insert( fact0 );
> end
> {code}
> *Ruleset 2*
> {code:java}
> rule "Rule183"
> 	dialect "mvel"
> 	when
> 		$entity : Entity( )
> 		$service : ServiceOrdered( serviceId == "FORM" , entity == $entity , entity.entityTypeId in ( 291262, 291275, 291277 ) )
> 		$r1 : QuestionDefinition( id == 590 )
> 	then
> 		Question fact0 = new Question();
> 		fact0.setQuestionDefinition( $r1 );
> 		fact0.setEntity( $entity );
> 		insert( fact0 );
> end
> {code}
> {code}
> rule "Rule183-2"
> 	dialect "mvel"
> 	when
> 		$entity : Entity( )
> 		$service : ServiceOrdered( serviceId == "DISSO" , entity == $entity , entity.entityTypeId == 291262 , stateId == 290864 )
> 		$r1 : QuestionDefinition( id == 590 )
> 	then
> 		Question fact0 = new Question();
> 		fact0.setQuestionDefinition( $r1 );
> 		fact0.setEntity( $entity );
> 		insert( fact0 );
> end
> {code}



--
This message was sent by Atlassian JIRA
(v7.5.0#75005)