Aaaak! This looks like a case of overzealous cutting. The method
reset() in jess.Rete is missing the line
m_activations.removeAllElements();
Looks like it's been missing for a few versions.
Here's a version of reset() with a nice doc-comment that you can cut
and paste into the 50a5 source:
/**
* Reset the Rete engine. Remove all facts, activations, etc. Clear all non-globals
from
* the global scope. Assert (initial-fact). Broadcasts a JessEvent of type RESET.
*
* @exception JessException If anything goes wrong.
*/
public void reset() throws JessException
{
synchronized (m_compiler)
{
removeFacts();
m_globalContext.removeNonGlobals();
m_activations.removeAllElements();
m_nextFactId = 0;
m_time = 0;
assert(m_initialFact);
JessException re = broadcastEvent(JessEvent.RESET, this);
if (re != null)
throw re;
}
}
Thanks, Bob! I'll mention this in the FAQ.
I think Bob Orchard wrote:
>
> Consider the following simple program ...
>
> (defrule r1
> (f a)
> =>
> (printout t OK crlf)
> )
>
> Then the following actions are taken with Jess50a5 ....
>
> Jess> (batch e:/alexis.eller/resetBug.clp)
> TRUE
> Jess> (watch all)
> TRUE
> Jess> (assert (f a))
> ==> f-0 (f a)
> ==> Activation: r1 : f-0
> <Fact-0>
> Jess> (reset)
> ==> f-0 (initial-fact)
> TRUE
> Jess> (agenda)
> [Activation: r1 f-0 ; time=2 ; salience=0]
> For a total of 1 activations.
> Jess>
>
> The fact f-0 was not retracted on the reset and the agenda was not cleared.
>
> Bob.
>
> ---------------------------------------------------------------------
> To unsubscribe, send the words 'unsubscribe jess-users [EMAIL PROTECTED]'
> in the BODY of a message to [EMAIL PROTECTED], NOT to the
> list. 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 9214 [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. List problems? Notify [EMAIL PROTECTED]
---------------------------------------------------------------------
