[rules-users] drools fusion: rule of type 2 minutes before event A finishes

[Edson Tirelli]

   Maciek,

   You can use "-*" for negative infinity and "*" for positive infinity.

    Edson




2009/10/21 Maciej Prochniak <mpr at touk.pl>

> Hello,
>
> I have following use case in drools fusion:
>
> event A has specified duration (different for each occurence)
> I would like to fire rule if event B does not happen eventA.endTimestamp
> -2minutes.
> e.g. event A has duration 20minutes, it's inserted on 13:22:00, then
> rule should fire on 13:40 if event B does not occur before.
>
> I looked on temporal operators - but could not find anything suitable,
> it should be sth like:
> when
> $eventA
> not (EventB( this after[ negative infinity, -2m ] $eventA )
> then
> ...
> end
>
> - but there's no infinity symbol in drools, nor java ;)
>
> Any ideas?
>
> thanks & br,
> maciek
>
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-- 
 Edson Tirelli
 JBoss Drools Core Development
 JBoss by Red Hat @ www.jboss.com
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