Re: [rules-users] Rules that cumulate on consequence
Why not use a Fact that contains your result?
In DRL terms it'd look like this:-
rule "one"
when
$r : Result( $score : score )
Applicant( numberOfLoans > 1 )
then
$r.setScore( $score + 5 );
update( $r );
end
rule "two"
when
$r : Result( $score : score )
Applicant( disposableIncome < 20000 )
then
$r.setScore( $score + 10 );
update( $r );
end
The result could equally just contain the factors influencing the score
with a low salience rule then calculating the final score:-
rule "one"
salience 100
when
$r : Result()
Applicant( $nl : numberOfLoans )
then
$r.setNumberOfLoans( $nl );
update( $r );
end
rule "two"
salience 100
when
$r : Result()
Applicant( $di : disposableIncome )
then
$r.setDisposableIncome( $di );
update( $r );
end
rule "calculate score"
salience 200
when
$r : Result( $nl : numberOfLoans > 1, $di : disposableIncome <
20000 )
then
$r.setScore( 20 );
update( $r );
end
On 23 November 2011 09:44, lansyj <lansyjp(a)gmail.com> wrote:
hi folks
We are working on a requirement that requires us to have multiple rules
that
could fire for a given input and for all the rules that fire, we would want
to cumulate the consequence to reach the final consequence.
As an example, if we want to identify the credit score for a person, based
on his gender you might want to assign/increment/decrement the score, then
based on nationality, and so on.
So, considering the long list of such criteria, having rules that cover all
scenarios and are still mutually exclusive isnt a scalable solution. Could
you please advice on how this could be achieved.
We run Drools 5.1.1 and Guvnor; rules are made using the guided editor with
DSLs.
Awaiting your support,
Best Regards
-lj
--
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