Re: JESS: Creating identical independent engines in Java

Right, thank you for your answer, it seems to accurately capture the 
solution needed. What I still can’t figure out is how to preserve the 
connection to the shadow facts.

When I created different peers, instead of copying the shadow facts I 
asserted them the same way they were asserted in the original engine. 
This way, whatever change occurred in a shadow fact instance, it was 
seen by all peers.

This is not the case with the engine that is populated with 
Rete.bload(). I studied the “JESS: Problems with copying shadow facts 
via bsave and bload” thread, but I can’t see how to re-register the 
listeners.. Any suggestions there?

Regards,

Theodore



Στις 8/5/2011 3:44 μμ, ο/η Ernest Friedman-Hill έγραψε:
> You can use Rete.bsave() to write a copy of an engine to a stream, and 
> then use Rete.bload() on a new instance of jess.Rete to turn it into a 
> copy of the original.
>
> On May 7, 2011, at 4:04 PM, Theodore Patkos wrote:
>
>> Hey all,
>>
>> I was wondering if there is a way to make an exact, yet independent, 
>> copy of a Rete engine's instance in Java (i.e., including the 
>> ruleset, working memory, agenda, activation order etc).
>>
>> Peering an engine only copies the ruleset; if, afterwards, one 
>> attempts to copy each fact from the initial engine to the peer, apart 
>> from matters of efficiency, there exists the possibility of 
>> activating rules that have already been activated in the initial 
>> engine before the peering.
>>
>> Thanx!
>> Theodore
>>
>>
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> ---------------------------------------------------------
> Ernest Friedman-Hill
> Informatics & Decision Sciences, Sandia National Laboratories
> PO Box 969, MS 9012, Livermore, CA 94550
> http://www.jessrules.com
>
>
>
>
>
>
>
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