Thanks a lot all of you for your assistance! John. On Mon, 6 Apr 2009, Ernest Friedman-Hill wrote:
> If you're getting this error on this line of code, then something has > already defined a template "painting2" beforehand. It could be an > actual deftemplate construct, but it could also be a defclass, an > "add", or using the name in a defrule. Just make sure you defined your > templates first, before you do anything else. > > On Apr 6, 2009, at 8:50 AM, John Chrysakis wrote: > > > > > Hello Ernest and thanks a lot for your reply > > > > I am still getting the following error: > > > > Message: Cannot redefine deftemplate MAIN::painting2. > > Program text: ( deftemplate painting2 extends artifact ( declare ( > > from-class painting2 ) ) ) at line 4. > > > > Is there any problem of using add method for each instance of > > painting? > > > > thanks again, > > > > John. > > ----------------------------------------------------- > > > > > > On Fri, 3 Apr 2009, Ernest Friedman-Hill wrote: > > > >> > >> On Apr 3, 2009, at 11:00 AM, John Chrysakis wrote: > >> > >>> > >>> (import factclasses.*,factinterface.*) > >> > >> > >> This will have no effect. You need two separate import calls here. > >> > >>> > >>> (deftemplate Painter(declare (from-class factclasses.painter ))) > >> > >> Since Painter is to be a subclass of Artifact, you want to declare > >> Artifact first, right? > >> > >> > >>> (deftemplate artifact (declare (from-class factclasses.artifact))) > >> > >> > >> This is OK. Instead of the the above three lines, you could have > >> something like > >> > >> (import factclasses.* > >> (import factinterface.*) > >> (deftemplate artifact (declare (from-class artifact))) > >> (deftemplate painting extends artifact (declare (from-class > >> painting))) > >> > >> > >>> (ppdeftemplate MAIN::painting extends artifact) > >> > >> "ppdeftemplate" pretty-prints a template; it doesn't change anything. > >> You've just supplied some extra arguments, which Jess ignores. > >> > >> > >> --------------------------------------------------------- > >> Ernest Friedman-Hill > >> Informatics & Decision Sciences Phone: (925) 294-2154 > >> Sandia National Labs > >> PO Box 969, MS 9012 [email protected] > >> Livermore, CA 94550 http://www.jessrules.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] > >> . > >> -------------------------------------------------------------------- > >> > >> > > > > > > -------------------------------------------------------------------- > > 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] > > . > > -------------------------------------------------------------------- > > --------------------------------------------------------- > Ernest Friedman-Hill > Informatics & Decision Sciences Phone: (925) 294-2154 > Sandia National Labs > PO Box 969, MS 9012 [email protected] > Livermore, CA 94550 http://www.jessrules.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]. > -------------------------------------------------------------------- > > -------------------------------------------------------------------- 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]. --------------------------------------------------------------------
