Thank you ever so much. One more quick question. In my rule I have calculated the following:
(/ ?mv ?io) Is there anyway to save this along with the Fact reference in ?b ?? Thanks Chirag -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED] Sent: 02 August 2004 15:31 To: [EMAIL PROTECTED] Subject: Re: JESS: Newbie questions I think Mehta, Chirag (IT) wrote: > > I cannot seem to figure out what is wrong! The things on the left-hand-side of a rule are always conditional elements (patterns or groups of patterns), not function calls. Jess is trying to interpret "(bind ?noncomp (/ ?mv ?io))" as a pattern that matches "bind" facts, and it's complaining because (/ ?mv ?io) isn't a valid slot value constraint. There's no way to bind a variable on the LHS of a rule and see it on the RHS of a rule other than by directly matching it. You're going to have to compute (/ ?mv ?io) twice, once in the "test" CE and once on the RHS of the rule. I think, by the way, that you've done something else wrong here. Each of the three bondMVMax patterns above can match a difference bondMVMax fact. Since each one matches a different slot, I'm guessing you actually mean for all the patterns to apply to the *same* fact; you're not trying to find sets of three facts, but single facts that pass all these criteria. You need to write all the criteria as one pattern: (defrule calcifnc (bondMVMax (cusip ?c) (mv ?mv) (issue_outstanding ?io&~nil)) (test (> (/ ?mv ?io) 10)) => (printout t ?c " is Non Complaint nc = " (/ ?mv ?io) crlf)) > > Also, I wish to save all the facts that meet the tests to a data > structure and then return the data to my java program. What is the best > method to do this?? You can have the rule store a reference to the fact each time it fires; for example , in your Java code Rete engine = ... ArrayList result = new ArrayList(); engine.store("RESULT", result); Then make the rule look like (defrule calcifnc ?b <- (bondMVMax (cusip ?c) (mv ?mv) (issue_outstanding ?io&~nil)) (test (> (/ ?mv ?io) 10)) => (printout t ?c " is Non Complaint nc = " (/ ?mv ?io) crlf) ((fetch RESULT) add ?b)) After running the engine, the ArrayList "result" will contain references to all the jess.Fact objects that match the criteria. --------------------------------------------------------- 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] -------------------------------------------------------------------- -------------------------------------------------------- NOTICE: If received in error, please destroy and notify sender. Sender does not waive confidentiality or privilege, and use is prohibited. -------------------------------------------------------------------- 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] --------------------------------------------------------------------
