On May 8, 2008, at 9:24 AM, ivo jonker wrote:
> Thanks a lot, this is exactly what i was looking for.
>
> I've just ordered the book: Jess in action and it should arrive
> shortly. I'm looking forward to it and i know it will be usefull.
>
> Anyway, while i'm at it. I was wondering how JESS would be suitable
> for using Time as a fact. I believe jess is not able to respond 100%
> real-time, so i guess it's useless using time as a fact when testing
> for changes into seconds... I might be wrong though.
>
>
It works fairly well, actually. You have a fact like
(time (seconds 87268726))
and then have a thread, either written in Java or in Jess, which keeps
a reference to this Fact object and uses Rete.modify() or (modify) to
update the "seconds" slot periodically. Then your rules can just match
that slot however they like and when the fact is updated the matches
are evaluated.
---------------------------------------------------------
Ernest Friedman-Hill
Informatics & Decision Sciences Phone: (925) 294-2154
Sandia National Labs FAX: (925) 294-2234
PO Box 969, MS 9012
ejfried@...
Livermore, CA 94550
http://www.jessrules.com--------------------------------------------------------------------
To unsubscribe, send the words 'unsubscribe jess-users
you@...'
in the BODY of a message to
majordomo@..., NOT to the list
(use your own address!) List problems? Notify
owner-jess-users@....
--------------------------------------------------------------------
