JESS: Multislot problem
Title: Multislot problem Hello, I am having a slight problem which is really really bugging me: I have this rule: (defrule bondMVMaxPCOutstanding::calcifnc (declare (auto-focus TRUE)) (rulesfired (rules bondMVMaxPCOutstanding)) ?b - (grouped-facts (partitionname cusip) (summationvalue ?mv) (partitionvalue ?c) (factcollection $?fc:(MAIN::checkifcontains productType CVBND $?fc))) ?fact - (MAIN::findwherecontains productType CVBND ?fc) (test ( (bondMVMaxPCOutstanding::compliant ?mv 1.0) ?*bondMVMaxPCOutstandingValue*)) = . . . . . etc Which uses this function: (deffunction MAIN::findwherecontains (?detail ?value ?col) returns the fact with the particular details (foreach ?fact ?col (if (eq (str-compare (call ?fact getSlotValue ?detail) ?value) 0) then (bind ?f ?fact) else (return 0)) ) (if (exists ?f) then (return ?f) else (return FALSE)) ) ?fact - (MAIN::findwherecontains productType CVBND ?fc) in the rule always stops the rule from activating. I do not understand why. Factcollection is a multifield of facts. I want to retrieve the fact where productType is CVBND. (MAIN::checkifcontains productType CVBND ?fc) succeeds so there is one in the slot, but the above line does not work. Any idea, Thanks in advance for your help! Chirag NOTICE: If received in error, please destroy and notify sender. Sender does not waive confidentiality or privilege, and use is prohibited.
AW: JESS: Multislot problem
I think Chirak wrote: ?fact - (MAIN::findwherecontains productType CVBND ?fc) in the rule always stops the rule from activating. I do not understand why. Is it possible it stops because youve forgotten to enter the $ in front of the ?fc-multislot-variable? Lars Hübner FH Albstadt-Sigmaringen Institut für angewandte Forschung Tel.: 07431/579-440 Fax.: 07431/579-439 E-Mail: [EMAIL PROTECTED] Internet: http://www.hs-albsig.de/iaf
RE: JESS: Multislot problem
Hello, I have tried it with $?fc with no luck. I have eventually figured out that if I don't use ?fact but in its place (MAIN::findwherecontains productType CVBND ?fc) it works fine but I do not know why! Chirag From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Lars HübnerSent: 17 August 2004 14:41To: [EMAIL PROTECTED]Subject: AW: JESS: Multislot problem I think Chirak wrote: ?fact - (MAIN::findwherecontains productType CVBND ?fc) in the rule always stops the rule from activating. I do not understand why. Is it possible it stops because you've forgotten to enter the '$' in front of the '?fc'-multislot-variable? Lars Hübner FH Albstadt-Sigmaringen Institut für angewandte Forschung Tel.: 07431/579-440 Fax.: 07431/579-439 E-Mail: [EMAIL PROTECTED] Internet: http://www.hs-albsig.de/iaf NOTICE: If received in error, please destroy and notify sender. Sender does not waive confidentiality or privilege, and use is prohibited.
RE: JESS: Multislot problem
I think that Chirag wrote: ?fact - (MAIN::findwherecontains productType CVBND ?fc) in the rule always stops the rule from activating. Hi Chirag, You might be violating the Zen of Jess http://herzberg.ca.sandia.gov/jess/zen.shtml. In your code ?fact - (MAIN::findwherecontains productType CVBND ?fc) you are trying to use the explicit pattern binding mechanism, -, to bind the results of a function call to a variable, which as far as I know, won't work. Patterns binding are just that: a means to bind the actual fact reference of a fact that matches a particular pattern to a variable for use on the RHS of a rule. I do not understand why. Jess is looking for an ordered fact named (MAIN::findwherecontains) containing a list of three values in its single slot, and it's rightly not finding any, so the rule never activates. Also, if you look at your function (deffunction MAIN::findwherecontains (?detail ?value ?col) ... you have it returning either 0, a fact reference, or FALSE depending on where the control flows. Then, you're trying to bind that to a variable that's clearly intended to hold a fact reference later... a sure source of future bugs. See if that helps. Cheers! -Jason Jason Morris Morris Technical Solutions [EMAIL PROTECTED] www.morristechnicalsolutions.com fax/phone: 503.692.1088 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]
Re: JESS: few questions
Thanks Ernest Friedman! I removed m_name, it worked fine! [EMAIL PROTECTED] wrote: I think [EMAIL PROTECTED] wrote: Is there a way to call one rule from another., instead of recreating non-similar conditions in another rule too? If you're worried about duplication on the right-hand-side of rules,you can write a deffunction, and call it on the right-hand-side ofboth rules. If you're worried about duplicate patterns: Jess noticesthis, and the duplication is removed while the Rete network is built;as long as the common patterns are the first patterns in the rule,duplicates will be shared between all rules automatically.Is it required for dynamic bean to have m_name as property and a constructor?No, of course they don't have to have a "name" property. Because Jessdoesn't construct your Beans itself, they don't even have to have adefault constructor.-Ernest Friedman-Hill Advanced Software Research Phone: (925) 294-2154Sandia National Labs FAX: (925) 294-2234PO Box 969, MS 9012 [EMAIL PROTECTED]Livermore, CA 94550 http://herzberg.ca.sandia.govTo 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]Thanks and regards,Bhaskar [EMAIL PROTECTED][EMAIL PROTECTED] Do you Yahoo!? Yahoo! Mail Address AutoComplete - You start. We finish.
RE: JESS: few questions [control pattern example]
I think that Bhaskar wrote: Can you give me an example of control-patterns? Hi Bhaskar, Sure thing. Try saving and running this batch file. (clear) (watch all) (defrule rule-1 Fires only if a (control-1) fact is present. ;; You might have several of these controlling the application state ?previous-control -(control-1) ;; Put other patterns here in your real code. = ;; Put other function calls here in your real code. (retract ?previous-control) (assert (control-n))) ;; And you may have many rules in this module ;; all working on some task... (defrule rule-n Fires only if a (control-n) fact is present. ?previous-control -(control-n) ;; Put other patterns here in your real code. = ;; Put other function calls here in your real code. (retract ?previous-control) (assert (process-done))) ;; Have the last rule done please turn off the lights :-D (defrule process-is-done Fires only if process is complete. (process-done) ;; Put other patterns here if needed. = ;; Put other function calls here if needed. ;; Begin the next process or halt (printout t Process is finished. crlf)) ;; Test (reset) (assert (control-1)) (run) === Jess prints out the following Jess (batch cc.clp) MAIN::rule-1: +1+1+1+t MAIN::rule-n: +1+1+1+t MAIN::process-is-done: +1+1+1+t == Focus MAIN == f-0 (MAIN::initial-fact) == f-1 (MAIN::control-1) == Activation: MAIN::rule-1 : f-1 FIRE 1 MAIN::rule-1 f-1 == f-1 (MAIN::control-1) == f-2 (MAIN::control-n) == Activation: MAIN::rule-n : f-2 FIRE 2 MAIN::rule-n f-2 == f-2 (MAIN::control-n) == f-3 (MAIN::process-done) == Activation: MAIN::process-is-done : f-3 FIRE 3 MAIN::process-is-done f-3 Process is finished. == Focus MAIN 3 Jess Hope this helps! Cheers, Jason Jason Morris Morris Technical Solutions [EMAIL PROTECTED] www.morristechnicalsolutions.com fax/phone: 503.692.1088 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]
