[jboss-jira] [JBoss JIRA] Commented: (JBRULES-505) Using a GLOBAL value in predicates in more than one rule - rule fails to evaluate correctly.

[Matt Green (JIRA)]

    [ http://jira.jboss.com/jira/browse/JBRULES-505?page=comments#action_12344212 ] 
            
Matt Green commented on JBRULES-505:
------------------------------------

OK, I'll put together some code and make it selfcontained. I will have to simplify the asserted objects as they are EJBs! I'll replace with simple Java classes.

> Using a GLOBAL value in predicates in more than one rule - rule fails to evaluate correctly.
> --------------------------------------------------------------------------------------------
>
>                 Key: JBRULES-505
>                 URL: http://jira.jboss.com/jira/browse/JBRULES-505
>             Project: JBoss Rules
>          Issue Type: Bug
>      Security Level: Public(Everyone can see) 
>          Components: All
>    Affects Versions: 3.0.4
>         Environment: Windows XP, JBoss 4.0.3SP1, JRules3.0.4, PackageBuilderConfiguration.JANINO
>            Reporter: Matt Green
>         Assigned To: Mark Proctor
>
> SAMPLE CODE:
> ===============================================
> package net.rockshore.rmf.rules
> #list any import classes here.
> import net.rockshore.rmf.entities.SubscriptionLocal;
> import net.rockshore.rmf.entities.EventLocal;
> import java.lang.String;
> #declare any global variables here
> global java.util.Collection resultsCollection;
> global java.lang.String eventType;
> rule "KeepSubscriptionsToEventType"
> 	
> 	when
> 		subscription : SubscriptionLocal (eventTypeDiscriminator == (eventType))
> 	then 
> 		resultsCollection.add(subscription);
> 		System.out.println("Keeping Subscription:" + subscription + " is of type:" + eventType);
> 		
> end
> rule "DiscardSubscriptionsToWrongEventType"
> 	when
> 		wrongSubscription : SubscriptionLocal (eventTypeDiscriminator != (eventType))
> 	then 
> 		System.out.println("Discarding Subscription:" + wrongSubscription + " NOT of type:" + eventType);
> 		retract (wrongSubscription);
> end
> ===============================================
> TEST DATA SET:
> -------------------------
> SubscriptionLocal objects asserted
> KEY, EVENTTYPEDISCRIMINATOR
> ---------------------------------------------------------------------------------------------------------
> 5c4o12-mexdpy-esmukytr-1-esmx439o-58 ,        net.rockshore.rmf.entities.events.business.TravelAlertEvent
> 5c4o12-mexdpy-esmukytr-1-esmx438t-57 ,         net.rockshore.rmf.entities.events.business.FlightDelayEvent
> 5c4o12-mexdpy-esmukytr-1-esmx438t-56 ,         net.rockshore.rmf.entities.events.business.FlightDelayEvent
> GLOBAL variable
> eventType = "net.rockshore.rmf.entities.events.business.FlightDelayEvent"
> PROBLEM DESCRIPTION:
> -------------------------------------
> When firing the above rules with data shown above, the result shows that "DiscardSubscriptionsToWrongEventType" rule was fired for Subscriptions with keys ending 57 and 56. This is the wrong way round as that rule should have fired only with Subscription 58.
> Further, rule "KeepSubscriptionsToEventType" did not fire.
> FURTHER ANALYSIS:
> -------------------------------
> If one rule OR the other is deleted then the remaining rule fires correctly.
> If both rules have the predicate replaced with a String literal "net.rockshore.rmf.entities.events.business.FlightDelayEvent" then both rules fire correctly.
> The problem still occurs when eventType predicate is replaced with eventType.toString()

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