The better link to the Userfunction is http://herzberg.ca.sandia.gov/jesswiki/view?FactOnFiring
Sorry -W On 10/24/07, Wolfgang Laun <[EMAIL PROTECTED]> wrote: > > The first way proposed by Ernest can be implemented in a Userfunction. See > http://herzberg.ca.sandia.gov/jesswiki/edit?FactOnFiring > > With some rule A and a deftemplate FiredA you call the function > (fact-on-firing A FiredA) > Using FiredA in some other rule should give you the desired behavior. > > Additional features include: > > - automatic retracting of generated facts > - providing of the rule in a slot of the generated fact > - saving the facts causing the rule to fire in a multislot of the > generated fact. > > kr > Wolfgang > > > On 10/24/07, Ernest Friedman-Hill <[EMAIL PROTECTED]> wrote: > > > There are a couple of ways you could do this now. One would be to > > use JessEvents. Register a JessListener and let it handle > > DEFULE_FIRED events by invoking a function you specify, under > > conditions you specify. I've attached a short Jess-language program > > which demonstrates something like this. > > > > Another way would be to extend jess.Rete and override "aboutToFire()" > > or "justFired()"; these hooks are provided to let you do per-rule > > processing like this. > > > > > > > > On Oct 23, 2007, at 4:13 PM, Shi Paul wrote: > > > > > Hi Ernest or others, > > > Here is the situation, say there are 2 rules A and B, I want > > > whenever A fires B fires as well(or less frequently based on some > > > other conditions) and I don't want to just copy A's conditions into > > > B since that way I have to maintain 2 places. What I'd like to see > > > in Jess is some kind of instructional command (for example (follow- > > > rule A) in B's LHS), or better yet if Jess can hook up with some > > > rules before or after A fires (which resembles AspectJ > > > programming). I think it'd be a great feature if Jess allows that. > > > > > > Thanks, > > > Paul > > > > > > > --------------------------------------------------------- > > Ernest Friedman-Hill > > Informatics & Decision Sciences Phone: (925) 294-2154 > > Sandia National Labs FAX: (925) 294-2234 > > PO Box 969, MS 9012 [EMAIL PROTECTED] > > Livermore, CA 94550 http://www.jessrules.com > > > > > > > > > > > > >
