Check out the forall conditional element: http://downloads.jboss.com/drools/docs/5.1.1.34858.FINAL/drools-expert/html_single/index.html#d0e4632

Good luck!
Steve

rules-users-bounces@lists.jboss.org wrote on 02/24/2011 09:45:16 AM:

> From:
>
> "Petr Chelčický" <petr.chelcicky@centrum.cz>
>
> To:
>
> <rules-users@lists.jboss.org>
>
> Date:
>
> 02/24/2011 09:49 AM
>
> Subject:
>
> [rules-users] Check all elements of a list (Drools Expert)
>
> Sent by:
>
> rules-users-bounces@lists.jboss.org
>
>
> Hi! I'm trying to write rules in Drools Expert. In the when part of
> the rule, I check some properties of an Application object. This
> object contains a List and I would like to check if a bunch of rules
> apply to all objects of SomeOtherType in this list. The rule should
> fire only when the constraints are valid for ALL objects in that
> list. How could this be done?
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