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

[Mark Proctor]

Sorry I replied to the wrong message, doh! So here it is again.

I've thought about some callback mechanism that is executed when a rule 
is no longer true, the problem I have is which variable changed to make 
the rule no longer true and how do I expose the bound variables to the 
user, especially if the rule is no longer  true due to a retraction, and 
ofcourse I need to figure our the DRL syntax that makes sense.

I've thought about doing it as a sort of logical closure, so you have to 
declare the data:
insertLogicalClosure( new LogicalClosure() {
execute() {.......}
} )

Not sure how to make the data accessible, maybe the user should have to 
populate the map. Anyway idea is in the same way that a logical insert 
is executed when the rule is true, the logical closure/method is executed.

So if someone has some time and fun, maybe they would work on this and 
submit a patch :)

Claudio Rainoldi wrote:
> 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
> ------------------------------------------------------------------------
>
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>   

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