Yes! This was exactly what I wanted. Thanks a lot! Raji ----- [EMAIL PROTECTED] wrote:
> If you have a series of facts > (fact (name a) (value 123)) > (fact (name b) (value 456)) > > and write a query like > > (defquery find-value > (declare (variables ?name)) > (fact (name ?name))) > > Then Jess will make an index on the "name" slot, so that looking up > these facts by name will be fast (using a hashtable, so basically > constant time.) > > Does this answer your question? > > I think Raji Sridar wrote: > > Hi, > > > > I am a new user of JESS and would like your inputs on implementing enumeration > > and lookup tables in JESS. > > The requirement is for a straight forward indexing mechanism to store and > > retrieve static data as: > > 1. Enumeration - To convert a codified value to its description > > 2. Table - To retrieve a set of attributes based on a key value > > I can have these as facts and use them directly in the rules or implement them > > through a java extension to JESS. > > If RETE is optimized for this, I would prefer to use them as facts. > > If not, based on your experience, I would like to know, which way is better for > > small number of facts ( say, < 20 ) and a larger number (say, 500) and for > > small sizes ( say 80 byte enumeration ) and larger sizes ( say, the total size > > of all attributes in the table is 1024 bytes ). > > Your input will help me decide on the better technique. > > > > Thanks > > Raji > > > > -------------------------------------------------------------------- > > 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 > Distributed Systems Research Phone: (925) 294-2154 > Sandia National Labs FAX: (925) 294-2234 > Org. 8920, MS 9012 [EMAIL PROTECTED] > PO Box 969 http://herzberg.ca.sandia.gov > Livermore, CA 94550 > > -------------------------------------------------------------------- > 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] --------------------------------------------------------------------
