Hi Michael,
There isn't a built-in function for saving all rules, but it's easy to
write a deffunction which does this using Jess's Java reflection capabilities.
(deffunction rules-to-file (?filename)
"Pretty-print all defined rules to a file"
(open ?filename rtf-file w) ;; Open the file
(bind ?e (call (engine) listDefrules)) ;; get Enumeration of all rules
(while (call ?e hasMoreElements) ;; for each element of Enumeration
(bind ?r (call ?e nextElement)) ;; fetch the element
(printout rtf-file (call ?r toString) crlf)) ;; print Defrule.toString() to file
(close rtf-file))
You can then just use (batch) to read the file in. Precisely similar
technique can be used for deftemplates,d effacts, etc.
I think M Ward wrote:
>
> Hello,
>
> I am a newcomer to the field of Jess and so would appreciate some
> guidance on the following enquiry.
>
> I am aware that deffacts can be saved and and loaded using the
> save-facts and load-facts comands respectively. Is there a similar
> command that allows for defrules to be saved to and loaded from a
> named file?
>
> Many thanks,
>
> Michael D.M. Ward
---------------------------------------------------------
Ernest Friedman-Hill
Distributed Systems Research Phone: (925) 294-2154
Sandia National Labs FAX: (925) 294-2234
Org. 8920, MS 9214 [EMAIL PROTECTED]
PO Box 969 http://herzberg.ca.sandia.gov
Livermore, CA 94550
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