[rules-users] Weighted rules / scoring

[Greg Barton]

1) Where is the variable "score" initialized? If it's not a global the rule wouldn't compile.

2) Is your intent to create a new Applicant instance, or modify the one matched in the rule?  (Or maybe you want to gather the score from the matched instance and put it (+2) into a new instance?

--- On Sun, 6/7/09, Chris Strachan <chris.strac at googlemail.com> wrote:

> From: Chris Strachan <chris.strac at googlemail.com>
> Subject: [rules-users] Weighted rules / scoring
> To: rules-users at lists.jboss.org
> Date: Sunday, June 7, 2009, 1:11 PM
> Hi,
> 
> 
> 
> I want to be able to use drools / guvnor brms to store
> weighted rules
> 
> (scoring), however I can't seem to find a way to do
> this.
> 
> 
> 
> I attempted the following,
> 
> 
> 
> rule "Myscoreincreaserule"
> 
>         dialect "mvel"
> 
>         when
> 
>                 Applicant( name ==
> "chris" )
> 
>         then
> 
>                 Applicant fact0 = new Applicant();
> 
>                 fact0.setScore( score + 2 );
> 
>                 insert(fact0 );
> 
> end
> 
> 
> 
> drools didn't seem to like the way I did this.
>  Perhaps this isn't
> 
> permitted, in effect I am trying to do - score = score +
> 2.
> 
> 
> 
> Upon validation I get the following error.
> 
> 
> 
>         [Myscoreincreaserule] Unable to build
> expression for 'consequence': Failed
> 
> to compile: 1 compilation error(s): - (1,3) unqualified
> type in strict mode
> 
> for: age ' Applicant fact0 = new Applicant();
> fact0.setScore( score + 2 );
> 
> insert(fact0 ); '
> 
> 
> 
> Any ideas on how I should be approaching this?
> 
> 
> 
> Thanks,
> 
> 
> -----Inline Attachment Follows-----
> 
> _______________________________________________
> rules-users mailing list
> rules-users at lists.jboss.org
> https://lists.jboss.org/mailman/listinfo/rules-users
>