[rules-users] Custom EvaluatorFactory

[Andy Mei]

Hi Edson,

This is exactly what I am looking for, thanks!

One comment, is it possible to expand on list of operators Drools support?
Better yet, make it plugable just like EvaluatorDefinition.

Correct me if I am wrong, but here are list of operators Drools support:

http://anonsvn.labs.jboss.com/labs/jbossrules/trunk/drools-core/src/main/java/org/drools/base/evaluators/Operator.java

Would it be possible if I could add additional operators like '+', '-', '/',
'%'... to any objects.  For example, I would love to allow users to write
syntax below, where user could subtract 3 days from the current day.

  $p : Position ( settlementDate < ( $TODAY - '3D' ) )

I love the project, keep up the good work.  I am negotiating with management
to purchase support contract from Redhat.

Andy

On Dec 19, 2007 6:26 PM, Edson Tirelli <tirelli at post.com> wrote:

>
>    Andy,
>
>    I just added support for that in trunk (drools-4.1.0.SNAPSHOT).
> Although trunk is a work in progress, you are welcome to try it out and
> check if it meets your needs and provide feedback. Look for the interface:
> org.drools.base.evaluators.EvaluatorDefinition and its subclasses as
> examples.
>
>    []s
>    Edson
>
> 2007/12/19, Andy Mei <andy.d.mei at gmail.com >:
> >
> > Hi,
> >
> >   Is there a way I could register my own custom EvaluatorFactory?
> >   Drools ships with DateFactory what compares only dates, but no time is
> > included.  I would like to compare time as well.
> >   I see that it would be very helpful to include capability to register
> > custom EvaluatorFactory.
> >   Thanks.
> >
> > Andy
> >
> > _______________________________________________
> > rules-users mailing list
> > rules-users at lists.jboss.org
> > https://lists.jboss.org/mailman/listinfo/rules-users
> >
> >
>
>
> --
>   Edson Tirelli
>   JBoss Drools Core Development
>   Office: +55 11 3529-6000
>   Mobile: +55 11 9287-5646
>   JBoss, a division of Red Hat @ www.jboss.com
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>
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