I think Srini wrote: > If ceratin variables are being across defrules, is it a good idea to > define them as defglobal rather than asserting them when a rule is > fired? To get an idea there are 100's of these variables. Will there > be any performace or memory issues if they are defined as defglobal's > as opposed to asserting in defrule? >
Note that when a defglobal changes, rules that matched based on an earlier value aren't re-evaluated, so the behavior of your two alternatives would be quite different. You therefore have to choose based on what the application needs to do, rather than on performance. I don't think you can make any general statement about which would perform better -- it depends on what the rules look like. People routinely write Jess programs with thousands or tens of thousands of facts. Hundreds is not a problem. --------------------------------------------------------- Ernest Friedman-Hill Advanced Software 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 -------------------------------------------------------------------- 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] --------------------------------------------------------------------
