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].
--------------------------------------------------------------------
