Hi,
Now you have at least one "user request" about changing the visibility of
these methods in the next version. If needed, I can explain in a private
message why I need this level of control over the firing order. (No, Im not
falling in the trap of trying to make Jess to behave in a procedural way)
From: [EMAIL PROTECTED]
Reply-To: [email protected]
To: [email protected]
Subject: Re: JESS: depth vs breadth
Date: Sat, 15 Apr 2006 13:26:25 -0700 (PDT)
I think Skeptic 2000 wrote:
[Charset iso-8859-1 unsupported, filtering to ASCII...]
>
> Oh, now I feel bad, but I was in the "Java mindset", can it be done with
the
> SetStrategy method?
Yes, you could use the Rete.setStrategy() method, if you had an
instance of the class you wanted Jess to use; but the ones that
implement depth and breadth aren't actually public, so in practice you
can only do this with your own implementations.
Just say (Jess 7)
Rete engine = ...
engine.eval("(set-strategy breadth)");
In Jess 6, you have to use "executeCommand()" instead of "eval()".
>
> A new question : the descripton of the two defaults strategy talk about
> choosing the rule according to the order in which they have been
activated.
> But when we implement Strategy, we must compare two Activation object
and I
> don't see a method that give us a way to know which one is the more
recent.
The needed methods in the Token class are not public. There's actually
a comment in the Jess 7 source wondering whether they should be made
so; perhaps they should.
The Fact class has a public getTime() method, which see; it returns a
number related to the recency of the fact's last modification.
---------------------------------------------------------
Ernest Friedman-Hill
Advanced Software 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
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