Re: [drools-user] Rule Execution Flow

Thanks for the quick responses. I'll code it up and see how it roles...

-pankaj

Michael Suzio wrote:
> 
> No, the entire rule set does not get re-evaluated if the WorkingMemory
> changes.  When a new fact is asserted, that fact gets "matched" against
> the
> rule set, but *only* that fact.  Previous matches don't happen again,
> otherwise you'd constantly be getting recursion problems.  Drools isn't
> that
> inefficient -- it can't afford to be!
> 
> Take a look at the example code and DRL files distributed with Drools.
> Those examples should show you how various very simple problems are
> solved,
> and reveal more of how rules interact with each other.  Also, you should
> definitely dive right into trying out some code and rules of your own,
> that
> will help you iteratively build up your rules set.  I think you'll find
> it's
> simpler than you think.  More complex rules do require complex logic, but
> it
> is quite possible to start simple.
> 
> Also, read the manual and become familiar with the RETE algorithm and
> other
> algorithms Drools uses -- they're only lightly explained in the manual,
> but
> there are plenty of other engines based on Rete and other info sources
> (like
> the Wikipedia page on RETE:  http://en.wikipedia.org/wiki/Rete_algorithm).
> That will better explain how rule matching happens.
> 
> ---
> Michael J. Suzio
> msuzio@xxxxxxxxx
> 
> 

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