Ernest thank you for replying my email in details. You suggestion is clear enough exception the following point: It needs a context parameter for Rete.fetch().factValue(Context c).
If FactIdValue is a view of the actual Fact and it is a simple dereferencing using fetch().factValue(), do we need such a context parameter? How to get that parameter? (It is a kind of lookup for me with a context. Anything, please let me know. thanks Gang >From: [EMAIL PROTECTED] >Reply-To: [EMAIL PROTECTED] >To: [EMAIL PROTECTED] >Subject: Re: JESS: Sample Codes? >Date: Sat, 18 May 2002 07:24:49 -0700 (PDT) > > >In Jess version prior to 6, a "Fact-ID" is an integer. In Jess 6, it's >a view of the actual Fact object: a jess.FactIdValue object. It >contains a reference to the Fact object itself. So when you bind a >fact to a variable, like this: > > ?v <- (some-fact) > >?v is now the Fact object, not just the number. (assert) returns the >Fact object, too. If you print a FactIdValue, You see something like >"<Fact-27>" . After using (store) in Jess with the return value of >(assert) you can just use fetch().factValue() to get the Fact object >-- just a simple dereferencing, no lookup. You're right, >findFactById(int) is indeed slow. But you don't need to use it. > >I think Gang Liu wrote: > > Right. We can write actions to return fact-id to main(). Then, main() >can > > retrieve that fact by Rete.findFactByID(int id). I want to avoid this > > because the doc claims that Rete.findFactByID(int id) is very slow. > > > > Sorry, maybe I don't get your points. > > > > I want to find a way of getting a handle of that fact in main(). So, I >can > > retrive slot value by Fact.getSlotValue(java.lang.String slotname). > > > > Or, maybe there are some efficient ways you know. > > > > thanks > > > > Gang > > > > > > > > >From: [EMAIL PROTECTED] > > >Reply-To: [EMAIL PROTECTED] > > >To: [EMAIL PROTECTED] > > >Subject: Re: JESS: Sample Codes? > > >Date: Fri, 17 May 2002 17:40:42 -0700 (PDT) > > > > > >The return value of (assert) is a Value of type RU.FACT; you extract > > >the Fact object with factValue(). > > > > > >I think Gang Liu wrote: > > > > > > > main() wants to receive that new fact created in > > > > rule's action and process it. > > > > > > > > We can use "store" and "fetch". But, is "Fact" supported as a value? > > > > > > > > thanks > > > > > > > > Gang > > > > > > > > > > > >--------------------------------------------------------- > > >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] > > >-------------------------------------------------------------------- > > > > > > > > > _________________________________________________________________ > > Join the world�s largest e-mail service with MSN Hotmail. > > 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] > > -------------------------------------------------------------------- > > > > > >--------------------------------------------------------- >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] >-------------------------------------------------------------------- > _________________________________________________________________ Join the world�s largest e-mail service with MSN Hotmail. 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] --------------------------------------------------------------------
