Well, right now the parser automatically installs everything it
parses. I've been talking with Bob Orchard (the originator of
FuzzyCLIPS) about enabling changes to Jess to allow the easy
integration of fuzzy capabilities, and this same capability is among
those - the ability to parse a rule and build a Defrule but not feed
it to the network compiler. Expect this to appear hopefully by the
time 5.0 goes final.
For now, you should be able to hack this in to jess.Jesp with fairly
minimal changes.
I think Dave Carlson wrote:
>
> At 01:54 PM 2/8/99 -0800, you wrote:
> >In Jess, the nodes of the Rete network are instances of the various
> >subclasses of jess.Node. The class jess.ReteCompiler has the
> >unenviable task of assembling network fragments from rules jess.(Defrule
> objects).
> >
>
> This brings up a question that I have wanted to investigate. Can I parse a
> Jess ruleset and create the jess.(Defrule objects), but postpone the
> creation of the Rete network? Basically, break the current parse method
> into two steps. I have two reasons for asking this.
>
> 1. I'm building a graphical rule editor for Jess (more to come in another
> message...), and I would like a quick way to check syntax without incurring
> the overhead of creating the Rete. Also, I want access to the various
> Defrule, Pattern, Test1, etc. objects resulting from the parser. But, I
> don't need the Rete at this point.
>
> 2. In a multithreaded server, e.g. a servlet, I would like to parse the
> ruleset once, save the jess.(Defrule objects), and then create a new Rete
> for each connection thread. But, all Rete networks could be generated from
> the same parser results. I haven't tried to benchmark this, but seems like
> I could save some overhead by not parsing the rules over and over again. I
> currently use a resource pool approach for this. When the server starts, it
> creates several Rete objects, then allocates them to users and resets when
> done. But, I still have to parse the rules separately for each instance of
> the Rete.
>
> Cheers,
> Dave Carlson
>
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Ernest Friedman-Hill
Distributed Systems Research Phone: (925) 294-2154
Sandia National Labs FAX: (925) 294-2234
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PO Box 969 http://herzberg.ca.sandia.gov
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