[rules-users] Capturing condition/constraint evaluation results

[Grant Rettke]

Katvik what are you trying to achieve by realizing your goal? I'm curious
to know the context.

On Mon, Jan 28, 2013 at 2:03 PM, Wolfgang Laun <wolfgang.laun at gmail.com>wrote:

> You've got to realize that evaluation proceeds according to the patterns
> on a rule's LHS. Clearly, if a rule fires, all of your conditions are true.
> I assume that this isn't the only answer you expect. - Let's look at a
> simple example in DRL:
>
>    One( a == x )
>    Two( b == y )
>    Three( c == z )
>
> If this rule doesn't fire, two out of these three conditions may be true,
> or each of them, singularly. If you need to know which pairs and which
> singletons, you'll have to write individual rules for One, Two, Three and
> all pairs, i.e., One+Two, One+Three, Two+Three - not very attractive.
>
> You might get more information about the state of your facts by writing
> the singleton rules, do an insertLogical of an auxiliary fact representing
> the truth of its LHS, and proceed from there. (...)
>
> I can't recall any requirement quite like yours; usually it's the negative
> form, when people want to know which constraint causes a rule *not *to
> fire.
>
> A more detailed description of your actual requirements might help, but
> decision tables may not be the right vehicle for your kind of problem.
>
> -W
>
>
>
> On 26 January 2013 05:52, katvik <katvik at hotmail.com> wrote:
>
>> Hi,
>>
>> We are using decision table in our application and I need to capture the
>> results of the evaluation of every condition of a rule. Is it possible?
>>
>> Thank you.
>>
>>
>>
>> --
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>
>
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-- 
Grant Rettke | ACM, AMA, COG, IEEE
grettke at acm.org | http://www.wisdomandwonder.com/
Wisdom begins in wonder.
((λ (x) (x x)) (λ (x) (x x)))
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