[jboss-jira] [JBoss JIRA] Closed: (JBRULES-837) Collect keyword matches two conflicting rules

[Edson Tirelli (JIRA)]

     [ http://jira.jboss.com/jira/browse/JBRULES-837?page=all ]

Edson Tirelli closed JBRULES-837.
---------------------------------

    Fix Version/s: 4.0.0.MR2
                       (was:  4.0.0.MR3)
       Resolution: Done

> Collect keyword matches two conflicting rules
> ---------------------------------------------
>
>                 Key: JBRULES-837
>                 URL: http://jira.jboss.com/jira/browse/JBRULES-837
>             Project: JBoss Rules
>          Issue Type: Bug
>      Security Level: Public(Everyone can see) 
>    Affects Versions: 3.1-m1
>         Environment: java 1.5
>            Reporter: Viktor Nordling
>         Assigned To: Edson Tirelli
>             Fix For: 4.0.0.MR2
>
>
> If you have two rules:
> rule "A"
> 	when
> 		$a : ArrayList( size:size == 2 ) from collect (Car())
> 	then
> 		System.out.println("A: size = " + size);
> end
> rule "B"
> 	when
> 		$b : ArrayList( size:size == 3 ) from collect (Car())
> 	then
> 		System.out.println("B: size = " + size);
> end
> And you put two Cars in working memory, both A and B will be fired. Since there are two cars in working memory, only rule A should be fired.
> If you change the order of the rules, or make rule A match size == 3 and rule B match size == 2, no rules will be fired instead.
> The only workaround found is to add some criteria for the Car, in ONE of the rules. If rule A for example is:
> rule "A"
> 	when
> 		$a : ArrayList( size:size == 2 ) from collect (Car(color == "RED"))
> 	then
> 		System.out.println("A: size = " + size);
> end
> Then only rule A will be fired. If the same criteria is also added in rule B, both rules will be fired again.

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