Hello jess users,
I use the Fact Storage Provider Framework to connect Jess with a database.
The database contains these tables:
Table "Data"
ID integer
PathToImage String
Table "Coord"
ID integer
UpperRightX
UpperRightY
where Data.ID and Coord.ID are the same.
(fsm-do-backward-chaining Coord)
(defrule Rule1
; try to find which images have NO entry in the Coord table
(Data (ID ?id) (Path ?path) (Media ?mediaID))
(not (Coord (ID ?id)))
=>
(printout t "Pas de coordonnees pour l'image numero " ?id crlf))
Rule1 fires for all images (georefenced or not) in the Data table. It looks
like the backward chaining is not done when it is inside a (not).
This could be a design choice. But things become inconsistant when Rule2 is
added.
(defrule Rule2
; try to find which images HAVE an entry in the Coord table
(Data (ID ?id) (Path ?path) (Media ?mediaID))
(Coord (ID ?id))
=>
(printout t "Coordonnees existent pour l'image numero " ?id crlf))
If Rule2 is added, Rule1 fires for non-georeferenced images and Rule2 fires
for georeferenced images.
Is this a bug?
-Kami
_________________________________________________________________________
Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.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]
---------------------------------------------------------------------
