[rules-users] Inheritance-Like Design Question

[Moe Alkhafaji]

Thanks Pavel.  I was hoping for more of a transparent functionality
supported by Drools than have my users add those control method calls. I am
trying to make their rules as "control logic" blind as possible. But, I
guess they would have to do that.

Also, any idea on re-using an object from the parent rule? What is the
syntax for using an object declared in the parent rule? Thanks.

On Tue, Mar 9, 2010 at 11:25 AM, Pavel Tavoda <pavel.tavoda at gmail.com>wrote:

> Aha, misunderstanding. Yes you can't use activation group if you want
> execute more children rules. However you can use fact (Status) to
> avoid evaluating parent rule. My suggestion:
>
> Rule DEFAULT
> salience -100
> if A and ! Status(done) then DEFAULT end
>
> Rule A
> if A and B then SOMETHINGB; update(Status(done)) end
>
> Rule B
> if A or B then SOMETHINGB; update(Status(done)) end
>
> Rule C
> if A or C then SOMETHINGC; update(Status(done)) end
>
> At beginning insert Status with e.g. "ready". It's possible to use
> instead of update also insert but because you can fire more children
> rules it will be waste of memory.
>
> Hope this help
>
> Pavel
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> rules-users at lists.jboss.org
> https://lists.jboss.org/mailman/listinfo/rules-users
>



-- 
Moe Alkhafaji
Chief Technology Officer, MedCPU
Phone: (630) 290-1113
Email: cto at medcpu.com

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