If you have two rules
(defrule rule1
(A)
(B)
=>
(C)
)
(defrule rule2
(A)
(B)
=>
(D)
)
and both A and B are true, then
1) Both C and D will be executed, and
2) A and B will each be evaluated only once, as if you had written
(defrule rule3
(A)
(B)
=>
(do-C-and-D-in-some-random-order))
I think Adarsh Jain wrote:
> Does this mean I can use the same for both rules.
> Now if you look at my query, "Using multiple objects in LHS", I have given an
> example.
> So, how do I use the country object with attr name = "USA" in the second rule.
> do i have to
> do the filtering again.
> I will attach the example here again.
>
> ;;If the name attr in Country instance is "USA", then call a method on Country
> object
> ;;that would return an array of State objects. Change the name attribute of the
> State object
> ;;to "Northern Virginia" if the name attr is "Virginia".
> (Defclass country Country)
>
> (defrule search-country
> (country (name ?name) (Object ?country))
> (test (eq "USA" ?name)
> =>
> (call ?country getStates)
>
> I am not sure how to proceed further.
>
> Thanks,
> Adarsh
>
> friedman_hill ernest j wrote:
>
> > No; just write both rules and they will both fire. Jess will combine
> > their left-hand-sides automatically.
> >
> > I think Adarsh Jain wrote:
> > > Hi,
> > > Can you invoke another rule from the RHS that works on the same facts.
> > >
> > > Thanks,
> > > Adarsh
> >
> > ---------------------------------------------------------
> > 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
>
> --
> Adarsh Jain
> Longitude Systems, Inc
> Ph: 703-818-5436
>
>
---------------------------------------------------------
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
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