Re: JESS: Jess DE JSR-94
I think erich.oliphant wrote: Hi, We are using the JSR-94 interface but would like to use JessDE for debugging,etc. Will jessDE support the XML formatted files required by the JSR-94 interface ? There are two JSR94 drivers. There's the reference implementation that comes with the JSR94 package from Sun. It only supports a weird XML rule format in which Jess language code is wrapped with XML tags. This driver works with Jess 6 and I do not encourage anyone to use it. It was just a proof-of-concept. There also the new JSR94 driver that is packaged with recent versions of Jess 7. It supports JessML *and* Jess language code. In fact, the example given in the manual show it being used with Jess language code, not JessML. If you're using the JessDE, then you'll need to use this new Jess 7 driver. So tell me where you got the idea that JessML was required if you were using javax.rules? I'd like to change it if I can to make it clear that it's not. - Ernest Friedman-Hill Advanced Software Research Phone: (925) 294-2154 Sandia National LabsFAX: (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]
Re: JESS: Problem with definstance
I think David Firmin wrote: I'm trying to create shadow facts that subclass a deftemplate that's already been added to the Rete. When I try and add the java bean using definstance I get a ClassCastException as follows: java.lang.ClassCastException at jess.DefinstanceList.createNewShadowFact(DefinstanceList.java:206) at jess.DefinstanceList.definstance(DefinstanceList.java:275) Jess is assuming that the given class looks like a subclass of the deftemplate -- i.e., if the template has slots foo and bar, then the class had better have getFoo() and getBar() methods. It can have additional properties as well, of course, as befits a subclass. In any case, this is a lousy error message -- Jess should explicitly detect and report this problem. - Ernest Friedman-Hill Advanced Software Research Phone: (925) 294-2154 Sandia National LabsFAX: (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]
JESS: Firing on subsets (again)
Hey guys I tried your advise but was unsuccessful. Alan, I really thought your method would do exactly what I was trying to accomplish, but I thought that you were saying to assert that line ...as opposed to the '?' being in the rule itself. Here's what I'm trying to do: (MAIN::webservice (service getaddress) (project sage) (org georgetown) (analystname blake) (analystrole lead) (priority low) (reldatetime within_an_hour) (location dc) (action run) ) (defrule run-service ?inputservice - Hey guys I tried your advise but was unsuccessful. Alan, I really thought your method would do exactly what I was trying to accomplish, but I thought that you were saying to assert that line ...as opposed to the '?' being in the rule itself. Here's what I'm trying to do: (MAIN::webservice (service getaddress) (project sage) (org georgetown) (analystname blake) (analystrole lead) (priority low) (reldatetime within_an_hour) (location dc) (action run) ) (defrule run-service ?inputservice - (inputservice ?service ?project ?org ?analystname ?analystrole ?priority ?reldatetime ?location) ?newserv - (webservice (service ?service) (project ?project) (org ?org) (analystname ?analystname) (analystrole ?analystrole) (priority ?priority) (reldatetime ?reldatetime) (location ?location) (action run) ) = (store RETURN run) (printout t JESS: Found an existing service = ?service crlf) (printout t JESS: The user-specified action is to run the service! crlf) (retract ?inputservice)) Then assert: (assert (inputservice getaddress sage georgetown blake lead low within_an_hour dc)) Which obviously fires and give the desired result. But we would like for the user to be allowed to leave a field empty and still have this rule fire, so that this would also fire for us: (assert (inputservice getaddress ? georgetown ? lead low within_an_hour dc)) This is what I thought you were saying to do Alan, but after re-reading your post I see that the '?' is in the rule. But if we implemented it that way, we would have a rule like: ?inputservice - (inputservice ?service ? ? ? ? ? ? ?) Which would be useless. So my question is, is there a way to have this rule fire for a specific set of values, and if some of the fields are left blank? Just f.y.i I thought it could be done by changing the second line of the rule to: ?newserv - (webservice (service ?service) (project ?project|nil) (org ?org|nil) (analystname ?analystname|nil) (analystrole ?analystrole|nil) (priority ?priority|nil) (reldatetime ?reldatetime|nil) (location ?location|nil) (action run) ) nil being the value passed from Java when the field was left blank ...needless to say this didn't work out. thanks for the help guys -Jerome BG(inputservice ?service ?project ?org ?analystname ?analystrole ?priority ?reldatetime ?location) ?newserv - (webservice (service ?service) (project ?project) (org ?org) (analystname ?analystname) (analystrole ?analystrole) (priority ?priority) (reldatetime ?reldatetime) (location ?location) (action run) ) = (store RETURN run) (printout t JESS: Found an existing service = ?service crlf) (printout t JESS: The user-specified action is to run the service! crlf) (retract ?inputservice)) Then assert: (assert (inputservice getaddress sage georgetown blake lead low within_an_hour dc)) Which obviously fires and give the desired result. But we would like for the user to be allowed to leave a field empty and still have this rule fire, so that this would also fire for us: (assert (inputservice getaddress ? georgetown ? lead low within_an_hour dc)) This is what I thought you were saying to do Alan, but after re-reading your post I see that the '?' is in the rule. But if we implemented it that way, we would have a rule like: ?inputservice - (inputservice ?service ? ? ? ? ? ? ?) Which would be useless. So my question is, is there a way to have this rule fire for a specific set of values, and if some of the fields are left blank? Just f.y.i I thought it could be done by changing the second line of the rule to: ?newserv - (webservice (service ?service) (project ?project|nil) (org ?org|nil) (analystname ?analystname|nil) (analystrole ?analystrole|nil) (priority ?priority|nil) (reldatetime ?reldatetime|nil) (location ?location|nil) (action run) ) nil being the value passed from Java when the field was left blank ...needless to say this didn't work out. thanks for the help guys -Jerome BG __ Yahoo! Mail - PC Magazine Editors' Choice 2005 http://mail.yahoo.com 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: Firing on subsets (again)
Thanks again Alan and I understand what your saying, but the fields where the blank values will be unknown. Therefore to allow any of them to be random I would have to make a useless rule using ? as the varible for everything but the actual service. So even though we would like to match to empty fields ...or some random prechoosen value, we still need the other feilds so that the rule won't fire on every entry. just to help in giving you all am idea in what im trying to do here is another try I made at it: ?newserv - (webservice (service ?service) (project ?project|?) (org ?org|?) (analystname ?analystname|?) (analystrole ?analystrole|?) (priority ?priority|?) (reldatetime ?reldatetime|?) (location ?location|?) (action run) ) ...maybe I dont underst and the '|' operator on the left-hand side, but I thought that meant 'or', but this wont fire for me either. thanks again -Jerome BG --- Alan Moore [EMAIL PROTECTED] wrote: Jerome, You can match against ordered facts like so: (defrule myRule (first second ? fourth fifth ? seventh) = (printout t Rule fired) ) What this does is to match any of the following facts: (assert (first second dontcare fourth fifth dontcare seventh)) (assert (first second anything fourth fifth here seventh)) (assert (first second x fourth fifth y seventh)) (assert (first second nil fourth fifth nil seventh)) The question marks in the rule above will make the rule pattern match facts with the specified values (e.g. first, second, etc.) at the positions indicated and with *any* value at ordinal position 3 and 6. In this case the question marks are unnamed variables that get bound to whatever is at those positions in the matching fact(s). You could bind named variables like so: (defrule myRule (first second ?position3 fourth fifth ?position6 seventh) = (printout t Rule fired - values at position 3 and 6 are ?position3 , ?position6) ) I would suggest that you try a simplified version of your rule cut down to just one or two fields and experiment with how the pattern matching works. (defrule run-service ?inputservice - (inputservice ?service ?project ?org ?analystname ?analystrole ?priority ?reldatetime ?location) ?newserv - (webservice (service ?service) (project ?project) (org ?org) (analystname ?analystname) (analystrole ?analystrole) (priority ?priority) (reldatetime ?reldatetime) (location ?location) (action run) ) = (store RETURN run) (printout t JESS: Found an existing service = ?service crlf) (printout t JESS: The user-specified action is to run the service! crlf) (retract ?inputservice)) If this rule isn't firing for you and you think it should, try removing some of the slot matches in the second pattern. Maybe one or more of the slot values aren't *exactly* the same in both facts and so are preventing them from matching. Start with only one or two slots and keep adding them back until the rule stops firing. For example, (defrule run-service ?inputservice - (inputservice ?service ?project ?org ?analystname ?analystrole ?priority ?reldatetime ?location) ?newserv - (webservice (service ?service) (action run) ) = (store RETURN run) (printout t JESS: Found an existing service = ?service crlf) (printout t JESS: The user-specified action is to run the service! crlf) (retract ?inputservice) ) Good luck! alan 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] __ Yahoo! Mail - PC Magazine Editors' Choice 2005 http://mail.yahoo.com 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: Central data storage for multiople Jess instances
I think Bogdan Werth wrote: [Charset iso-8859-1 unsupported, filtering to ASCII...] Hello everybody, I working on the model from the field of social simulation. I am using RePast and Jess to make my agents think in a declarative way. At the moment I have a separate Jess instance for every agent (300 agents = 300 Rete instances). Don't do that. Just use one Jess instance. Facts that are specific to one agent should include an agent-specific identifier, and rules that operate on these facts should take care to match them as needed to keep the various agent's logical processes separate. - Ernest Friedman-Hill Advanced Software Research Phone: (925) 294-2154 Sandia National LabsFAX: (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]
