[rules-users] Re: Is this scenario suitable for using Drools?

[Steven Williams]

without knowing how you are accessing the database your two algorithms come
down to something like:

Alg. 1
max(select max(p) from y, select max(t) from z)

Alg. 2
select min(p) from y + select min(t) from z

which is basically the same as what Michael has proposed.

Personally I think if you are already using Drools then this would fit, but
it wouldn't seem like enough of a reason to introduce Drools on its own.

cheers
Steve



On Wed, Apr 23, 2008 at 2:27 AM, Cheng Wei Lee <zhenwei.li at gmail.com> wrote:

> I've 2 algorithms to calculate the cost of a product. At any one time,
> there is only 1 algorithm in use. Initially algorithm 1 will be the default.
> Subsequently, the decision to use which algorithm will depend on customers
> feedback. The algorithms are:
>
> Algorithm 1:
> Cost = MAX(P1, T1, P2, T2, P3, T3, ...)
>
> Algorithm 2:
> Cost = MIN(P1, P2, P3, ...) + MIN(T1, T2, T3, ...)
>
> The values of P1, P2, ... are stored within a database. The number of Ps &
> Ts are unknown but can be determined by querying the database, Would drools
> be a good option to use to store the algorithms? If so, how could I be able
> to retrieve the values of P1, P2, etc from the database from within drools?
>
> Thanks!
>
>
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