Thanks - this is a very succinct demonstration of a bug I suspected
might still be in there. Here's a workaround. Add the following method
to jess/NodeNot2.java:
boolean callNode(Token token, int callType) throws JessException
{
if ((token.m_tag == RU.ADD || token.m_tag == RU.UPDATE) && callType == LEFT)
token = new Token(token);
return super.callNode(token, callType);
}
I think Vadim Zaliva wrote:
>
> I have following rules:
>
> (watch all)
>
> (defrule r
> (declare (salience 1))
> (not (p ?))
> =>
> (printout t "r" crlf))
>
> (defrule r1
> (declare (salience -1))
> (not (p ?))
> =>
> (printout t "r1" crlf))
>
> (defrule r2
> (declare (salience -2))
> (not (p ?))
> =>
> (printout t "r2" crlf))
>
>
> (reset)
> (assert (p 1))
> (run)
> (retract 1)
>
> When I run it, I got:
>
> Jess, the Java Expert System Shell
> Copyright (C) 1998 E.J. Friedman Hill and the Sandia Corporation
> Jess Version 5.0a6 7/7/99
>
> null
> null
> null
> ==> f-0 (initial-fact)
> ==> Activation: r : f-0,
> ==> Activation: r1 : f-0,
> ==> Activation: r2 : f-0,
> ==> f-1 (p 1)
> <== Activation: r : f-0,
> <== Activation: r1 : f-0,
> <== Activation: r2 : f-0,
> <== f-1 (p 1)
> ==> Activation: r2 : f-0,
>
> My question is, why upon retraction of 'p' fact,
> only r2 rule is fired, not r1 and r?
>
> Vadim
>
> --
> ;;-----------------------------------+-----------------------------------+
> ;; [EMAIL PROTECTED] + Those who do not understand Unix +
> ;; Project Manager, Matranet Inc. + are condemned to reinvent it, +
> ;; http://www.matranet.com/ + poorly. (H. Spencer) +
> ;;-----------------------------------+-----------------------------------+
>
> ---------------------------------------------------------------------
> 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]
---------------------------------------------------------------------
