[rules-users] [Drools Activation-group] / how to set many activation groups

[Wolfgang Laun]

I can only let my imagination run wild... Let's say you have n
vouchers. It may be that voucher i blocks voucher j or vice versa, or
voucher i should be preferred against j (not reflexive). These rules
should be evaluated up front, leaving you with a consolidated voucher
set - you can call this "context" - and the promotions can be derived
from that.

I think that the logic for this stage can be expressed by simple
rules, resulting in the insertion of some derived fact(s). Of course,
simple and uniform scenarios like i blocks j for all i != j can be
handled using a rule attribute, but devising a more general mechanism
will prepare you for all contingencies. (You never know what your
markting dptmt will cook up next, don't you?)

-W



On 11/02/2014, jcarpene <jerome.carpene at sopragroup.com> wrote:
>
> Well, we do not really manage states, that is to say each voucher has a
> Rule
> which will be executed or not.
> All the rules are at the same level.
>
> The evaluation phase fires only the Rules that can be activated at the same
> time (currently thanks to the Activation-group)
> The output is a list of objects (Promotions) which are added to the Basket.
>
>
> I am thinking of a new Condition which could test some "context" to exclude
> Rules from activation, but not sure it is the right way ... What do you
> think ?
>
>
> Jerome
>
>
>
>
> --
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