Re: [rules-users] Event and Facts Problem

[Andynator]

Thank you! That is right...
It was my fault by posting the wrong code of mine. I used to modify the
event itself, which isn't the right way since they are immuteable, and
getting the same error.

But with retract($request) it is working properly ;)





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Re: [rules-users] Event and Facts Problem

[Wolfgang Laun]

Well, the rule says: "With a Resource in state 0 and a Reservation
request, do...".

It's like two cars parking along the double yellow line (without a
ticket yet) and a traffic warden arriving at the scene: it'll be a
ticket for each car...

-W


On 28/06/2013, Andynator  wrote:
> hey,
> I have a problem with events and facts: when i have two existing facts
> (resources) und i am inserting an event (request), then following rule is
> fired twice (for each resource)
>
> /declare ReservationRequest
>   @role ( event )
>   @timestamp ( timestamp )
>   @expires(0s)
> end
>
> rule "Allocate"
> no-loop true
> when
> $resource : Resource(state == 0)
> $request : ReservationRequest() from entry-point "EventStream"
> then
> modify($resource) { setState(1) };
> insert(new Allocation($resource, $request.getDuration()));
>
> log.warn("Rule 'Allocate' fired: '" + $resource.getName() + "' on
> Request '" + $request.getName());
> end/
>
> Any ideas why?
>
>
>
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> View this message in context:
> http://drools.46999.n3.nabble.com/Event-and-Facts-Problem-tp4024622.html
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>
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[rules-users] Event and Facts Problem

[Andynator]

hey,
I have a problem with events and facts: when i have two existing facts
(resources) und i am inserting an event (request), then following rule is
fired twice (for each resource)

/declare ReservationRequest
@role ( event )
@timestamp ( timestamp )
@expires(0s)
end

rule "Allocate"
no-loop true
when
$resource : Resource(state == 0)
$request : ReservationRequest() from entry-point "EventStream"
then
modify($resource) { setState(1) };
insert(new Allocation($resource, $request.getDuration()));
   
log.warn("Rule 'Allocate' fired: '" + $resource.getName() + "' on
Request '" + $request.getName());
end/

Any ideas why?



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