[rules-users] JBoss Rules IDE Error on StringEvaluator

[Edson Tirelli]

    Ronald,

    I see now. Version 3.0.x still used integer codes for operators and that
is the reason the error message is saying operator '50'.
    So, the problem is you are trying to use >= (operator 50) with a string
attribute:

    public static final int EQUAL            = 1;
    public static final int NOT_EQUAL        = 10;
    public static final int LESS             = 20;
    public static final int LESS_OR_EQUAL    = 30;
    public static final int GREATER          = 40;
    public static final int GREATER_OR_EQUAL = 50;
    public static final int CONTAINS         = 60;
    public static final int MATCHES          = 70;
    public static final int EXCLUDES         = 80;


      Version 4.0 already uses type safe enums for operators, so message
will be better.

      Back to your problem, I guess we should add support for comparisons
between strings using the java lexicographic order. We don't do it as of
today.

      What you can do as a work around is to use a predicate:

MyFact( $s: strAttr -> ( $s.compareTo( $otherValue ) >= 0 ) )

       May I ask you please to open a JIRA with a feature request to support
comparison for string objects?

       Thank you,
          Edson

2007/5/24, Ronald R. DiFrango <ron.difrango at gmail.com>:
>
> Edson,
>
> I am using 3.0.5 of the IDE which is the latest version I could find on
> the update site.
>
> I have asked when the newer version might be posted, but I never did hear
> an answer back.
>
> Ron
>
> On 5/23/07, Edson Tirelli <tirelli at post.com> wrote:
> >
> >    Ronald,
> >
> >    When you write an expression for a String attribute like:
> >
> > Person( name > "Edson" )
> >
> >    It should raise an exception saying:
> >
> > Operator '>' does not exists for StringEvaluator.
> >
> >    Although, he is saying Operator '50'?!?!
> >
> >    What version of drools are you using?
> >
> >    []s
> >    Edson
> >
> >
> >
> >
> > 2007/5/23, Ronald R. DiFrango < ron.difrango at gmail.com>:
> > >
> > > Anyone ever seen this error in the IDE:
> > >
> > > Severity and Description    Path    Resource    Location    Creation
> > > Time    Id
> > > Operator '50' does not exist for StringEvaluator
> > > RtvDecisionEngine/src/rules/com/circuitcity/rtvcrms/rules    rtv.drl
> > > Unknown    1179954317638    29080
> > >
> > > And if so what do you do about it?  My rules file is just under 1000
> > > lines [and growing] and shows no other errors.
> > >
> > > _______________________________________________
> > > rules-users mailing list
> > > rules-users at lists.jboss.org
> > > https://lists.jboss.org/mailman/listinfo/rules-users
> > >
> > >
> >
> >
> > --
> >   Edson Tirelli
> >   Software Engineer - JBoss Rules Core Developer
> >   Office: +55 11 3529-6000
> >   Mobile: +55 11 9287-5646
> >   JBoss, a division of Red Hat @ www.jboss.com
>
>
>


-- 
  Edson Tirelli
  Software Engineer - JBoss Rules Core Developer
  Office: +55 11 3529-6000
  Mobile: +55 11 9287-5646
  JBoss, a division of Red Hat @ www.jboss.com
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.jboss.org/pipermail/rules-users/attachments/20070524/ac965c4b/attachment.html