[rules-users] Global variable in LHS

[Mauricio Salatino]

That's right.. globals are usually used to access to external services and
usually you don't want to do inferences over that global references. Global
are not facts. If you want to do inferences create a fact :)

Cheers

On Mon, Jul 18, 2011 at 3:55 PM, Swindells, Thomas <TSwindells at nds.com>wrote:

> Don't use a global, instead create a new fact type "Global" having a single
> field globalVariable (type object will probably do), then you can pretty
> much write what you have below (once you add the missing bracket).
> Alternatively you may be able to do something like eval(Arrays.asList("X",
> "Y").contains(globalVariable))
>
> Thomas
>
> > -----Original Message-----
> > From: rules-users-bounces at lists.jboss.org [mailto:rules-users-
> > bounces at lists.jboss.org] On Behalf Of pamerida
> > Sent: 18 July 2011 19:09
> > To: rules-users at lists.jboss.org
> > Subject: [rules-users] Global variable in LHS
> >
> > Hi everybody,
> >
> > I would like to analyze a global value in the LHS of my rule without
> using an
> > eval, something like this:
> >
> >
> >         global String globalVariable;
> >
> >       rule 'SI-002-NAD-6'
> >       salience 5000
> >       when
> >       global (globalVariable in ("X","Y")
> >       then
> >       logger.log("[SI-002-NAD-6] Debe colocar la información del
> > propietario del medio de transporte.");
> >       end
> >
> > I cant use eval because it doesnt recognize the keyword "in", for example
> > this code would throw me an error in the validation
> >
> >  global String globalVariable;
> >
> >       rule 'SI-002-NAD-6'
> >       salience 5000
> >       when
> >       eval (globalVariable in ("X","Y")
> >       then
> >       logger.log("[SI-002-NAD-6] Debe colocar la información del
> > propietario del medio de transporte.");
> >       end
> >
> > any suggestions? thanks so much for your help :)
> >
> >
> >
> > --
> > View this message in context: http://drools.46999.n3.nabble.com/Global-
> > variable-in-LHS-tp3180063p3180063.html
> > Sent from the Drools: User forum mailing list archive at Nabble.com.
> >
> > _______________________________________________
> > rules-users mailing list
> > rules-users at lists.jboss.org
> > https://lists.jboss.org/mailman/listinfo/rules-users
>
>
>
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