Reevaluating after change is the whole idea of a production rule system.
And you have to guard against it to avoid infinity.
age == null
age == 0
or use
no-loop true
-W
On 8 April 2011 13:39, Geoffrey De Smet <ge0ffrey.s...@gmail.com> wrote:
> Related to the modify expression,
> I 've always wondered about this code:
>
> rule "MyRule"
> when
> $p : Person(name = "Yoda")
> then
> modify ($p) {
> setAge(300)
> }
> end
>
> Doesn't this create an infinite loop? (In my experience it does or at
> least it takes a lot longer)
> Because the modify ($p) schedules any rule using a Person back on the
> agenda to be re-evaluated,
> so also that rule, which is evaluated and executed again, modifying $p
> again, ... hence the infinite loop?
>
> --
> With kind regards,
> Geoffrey De Smet
>
>
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