And it works great !
Thank a lot :-)
Jerome Poirier
> -----Message d'origine-----
> De : Jonker, J. [mailto:[EMAIL PROTECTED]]
> Envoy� : mercredi 9 f�vrier 2000 14:39
> � : Jerome Poirier
> Objet : FW: JESS: JESS and Java objects
>
>
> His solution is much better :-)
>
> -----Original Message-----
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED]]
> Sent: woensdag 9 februari 2000 14:32
> To: Jerome Poirier
> Cc: [EMAIL PROTECTED]
> Subject: Re: JESS: JESS and Java objects
>
>
> That's what the "OBJECT" slot is for - it holds the object.
>
> (defrule write-a
> (a (num ?n) (OBJECT ?o))
> =>
> (call ?o setNum (+ ?n 1)))
>
> Note that in this case, you can use "modify" if you want, since what
> you're doing is modifying one of the matched slots. That would look
> like this, and have the identical effect:
>
> (defrule write-a-2
> ?f <- (a (num ?n))
> =>
> (modify ?f (num (+ ?n 1))))
>
> The advantage here is that (a) could be either a regular fact or a
> definstance, and the code still works; useful if you ever want to
> change this.
>
> I think Jerome Poirier wrote:
> > Hello,
> >
> > First I'm a new french user of Jess, so I don't speak english
> very, sorry
> > for the inconvenience.
> > I would like to fire rules with Java objects based facts.
> >
> > Please let's considere the following object :
> > * class A {
> > * int num;
> > * A (int newNum) { setNum (newNum); }
> > * int getNum () { return num; }
> > * void setNum (int newNum) { num = newNum; }
> > * }
> > To put instances of it into facts, I made :
> > * jess.Rete rete = jess.Rete();
> > * A a1 = new Achat(1);
> > * rete.executeCommand("(defclass a A)");
> > * rete.store("A1", a1);
> > * rete.executeCommand("(bind ?a (fetch A1))");
> > * rete.executeCommand("(definstance a ?a static)");
> > So I have the following fact:
> > * (a (class <External-Address:java.lang.Class>) (num 1) (OBJECT
> > <External-Address:A>))
> >
> > Now I would like to create a rule which, for all "a" facts, do
> an action.
> > This is done by (for example) :
> > * rete.executeCommand("(defrule write-a " +
> > * "(a (num ?n)) => " +
> > * "(printout t ?n crlf))");
> > Into the action, I can use "num" thanks to "?n".
> >
> > BUT I do not know how to use the objet itself ! I would like to do
> something
> > "like" :
> > * rete.executeCommand("(defrule write-a " +
> > * "(?object = a) => " +
> > * "(call ?object setNum 2))");
> >
> > Do you know how to do ???
> >
> > Thanks a lot
> >
> > Jerome Poirier
> > [EMAIL PROTECTED]
> >
> > ---------------------------------------------------------------------
> > To unsubscribe, send the words 'unsubscribe jess-users [EMAIL PROTECTED]'
> > in the BODY of a message to [EMAIL PROTECTED], NOT to the
> > list (use your own address!) List problems? Notify
> [EMAIL PROTECTED]
> > ---------------------------------------------------------------------
> >
>
>
>
> ---------------------------------------------------------
> Ernest Friedman-Hill
> Distributed Systems Research Phone: (925) 294-2154
> Sandia National Labs FAX: (925) 294-2234
> Org. 8920, MS 9012 [EMAIL PROTECTED]
> PO Box 969 http://herzberg.ca.sandia.gov
> Livermore, CA 94550
> ---------------------------------------------------------------------
> To unsubscribe, send the words 'unsubscribe jess-users [EMAIL PROTECTED]'
> in the BODY of a message to [EMAIL PROTECTED], NOT to the
> list (use your own address!) List problems? Notify
> [EMAIL PROTECTED]
> ---------------------------------------------------------------------
>
---------------------------------------------------------------------
To unsubscribe, send the words 'unsubscribe jess-users [EMAIL PROTECTED]'
in the BODY of a message to [EMAIL PROTECTED], NOT to the
list (use your own address!) List problems? Notify [EMAIL PROTECTED]
---------------------------------------------------------------------
