[rules-users] Discover when a rule isn't more active

[Claudio Rainoldi]

Yes i know this. I've tried to use activationCancelled method to
discover when a rule isn't more true but it doesn't work. The code was

public static class FiredRulesListener extends
DefaultAgendaEventListener static class FiredRulesListener extends
DefaultAgendaEventListener

{
List<Rule> firedRules = new ArrayList<Rule>();

public List<Rule> getFiredRules() List<Rule> getFiredRules()
{return this.firedRules;}

@Override

publicvoid afterActivationFired(AfterActivationFiredEvent event,
WorkingMemory workingMemory)

{Rule rule = event.getActivation().getRule();

if (!this.firedRules.contains(rule))  this.firedRules.add(rule);
(!this.firedRules.contains(rule))  this.firedRules.add(rule);
}


@Override

public void activationCancelled (ActivationCancelledEvent event,
WorkingMemory workingMemory)

{
System.out.println("i never see this message");
Rule rule= event.getActivation().getRule();
this.firedRules.remove(rule);
}


but when i turn off the ligth the method activationCancelled wasn't
never called



2008/7/29, Edson Tirelli <tirelli at post.com>:
>
>
>    The same interface you are using (AgendaEventListener) has 2 methods for activations created and canceled:
>
>     void activationCreated(ActivationCreatedEvent event,
>                            WorkingMemory workingMemory);
>
>     void activationCancelled(ActivationCancelledEvent event,
>                              WorkingMemory workingMemory);
>
>     []s
>     Edson
>
>
> 2008/7/29 Claudio Rainoldi <claudio.rainoldi at gmail.com>
>
> >
> >
> > Hi everyone,
> > isn'it there a way to find when a rule isn't more active.
> > For example if i have this rule:
> >
> >
> > rule "light 2 on"
> > dialect "java"
> > when
> > Light (name=="0/0/2", actualvalue=="1");
> > then
> > System.out.println("luce 2 on");
> > end
> >
> >
> > when someone turn on the light 2 i discover that the rule is fired using an Agenda Event Listener and the method afterActivationFired;
> > But when someone turn off the ligth isn't there a similar way to discover that the rule "light 2 on" isn't more active.
> > My only solution is to use the dual rule:
> >
> > rule "light 2 on_dual"
> > dialect "java"
> > when
> > not (Light (name=="0/0/2", actualvalue=="1"));
> > then
> > System.out.println("luce 2 off");
> > end
> >
> > Isn't there a more sample way to do this?
> > Thanks in advance.
> >
> >
> > Cla
> > _______________________________________________
> > rules-users mailing list
> > rules-users at lists.jboss.org
> > https://lists.jboss.org/mailman/listinfo/rules-users
> >
> >
>
>
>
> --
> Edson Tirelli
> JBoss Drools Core Development
> JBoss, a division of Red Hat @ www.jboss.com
>
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>
>