This idea of "rule inheritance" has been brought up before; it's a good idea. See http://www.mail-archive.com/[EMAIL PROTECTED]/msg05152.html .
No promises, but it's possible that it will be in Charlemagne. Anyway, -don't- deal with this using queries; you'll be sacrificing a lot of performance for not much clarity. One thing you -could- do would be to use a macro processor to pre-process your files, and define macros to represent the shared data. I think Xiaocheng Luan wrote: > > Hi, this might be a dumb question, but is there any way to reuse > a matching pattern, for example, the following piece of pattern tests > if the class of instance ?x is compatible (subclass, either direction) > with that of instance ?y. > > (instance-of ?x ?class1) > (instance-of ?y ?class2) > (or > (sub-class-of ?class1 ?class2) > (sub-class-of ?class2 ?class1) > (same-class-as ?class1 ?class2) > ) > > This kind of test is needed in different rules and even needed more > than once within one rule. Therefore, it's desirable to have some > way to reuse this piece of code. Writing a function that uses a > run-query is the best way I could think of. Any better ideas? > > Thanks! > > Xiaocheng Luan --------------------------------------------------------- Ernest Friedman-Hill Distributed Systems Research Phone: (925) 294-2154 Sandia National Labs FAX: (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] --------------------------------------------------------------------
