[rules-users] Reading DRL file with large number of rules

Swindells, Thomas TSwindells at nds.com
Mon Feb 8 09:50:02 EST 2010


But isn't the way Rete work is that it creates a decision tree to work out which rules to evaluate.  Right at the top of the tree will be a check on the fact type that is being inserted, as the fact being inserted doesn't match against any of the 20k rules (it is a totally different object type) the evaluation will finish immediately with no further rule evaluations.

Thomas

> -----Original Message-----
> From: rules-users-bounces at lists.jboss.org [mailto:rules-users-
> bounces at lists.jboss.org] On Behalf Of djb
> Sent: 08 February 2010 14:41
> To: rules-users at lists.jboss.org
> Subject: Re: [rules-users] Reading DRL file with large number of rules
>
>
> I second Felipe -
> since every time you modify working memory (eg. insert), it refires all
> rules, so for 20k rules, you're looking at something like 350-400 million
> firings :)  Or, without no-loop, it will never end.  Though perhaps salience
> skips this second problem.
>
>
>
>
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