I think Andrew Reischer wrote:
[Charset iso-8859-1 unsupported, filtering to ASCII...]
> I have a little rule that keeps firing. I have an object with two slots.
> I match one of them in the LHS. I set the other in the RHS though a
> modify. Does the modify in the RHS change the object enough to trigger
> the rule?
>
This is a fairly common concern; so common, in fact, that the next
major release of Jess will offer a specific way to avoid this
behavior.
For now, though, the trick is to modify the rule such that the LHS is
a little more specific, so the rule won't match if its already fired:
(defrule accumulate_disease
(disease (name ?dname))
?ac <- (parameter-stat (parameter-name primary_disease)
(possible-values ?v))
(test (neq -1 (?v indexOf (str-cat "|" ?dname "|")))
=>
...
This version of the rule will no longer match once an entry for ?dname
has been added.
---------------------------------------------------------
Ernest Friedman-Hill
Distributed Systems Research Phone: (925) 294-2154
Sandia National Labs FAX: (925) 294-2234
PO Box 969, MS 9012 [EMAIL PROTECTED]
Livermore, CA 94550 http://herzberg.ca.sandia.gov
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