[rules-users] Ask for help on rule authoring

[Wolfgang Laun]

Sorry, I don't use guided editors.
-W

On 25 March 2011 18:17, Benson Fung <benson.redhat at gmail.com> wrote:

> Hi Wolfgang,
>
> I managed to author this rule(ApplicationData( age == null || age ==
> "" )) via Technical Rules editor of BRMS.
> However, I cannot create this rule via Business Rule Guided Editor of BRMS.
>
> Could you let me know how?
>
>
> Thanks
>
>
>
> 2011/3/26 Wolfgang Laun <wolfgang.laun at gmail.com>:
> > You can't use a method call as the left hand side operand in a
> constraint;
> > thus
> >    age.size() == 0
> > is not correct.
> >
> > Do you really mean
> >    age == "null"
> >
> > Probably
> >   ApplicationData( age == null || age == "" )
> > is the right thing to do, provided that ApplicationData.age is a String.
> >
> > -W
> >
> > On 25 March 2011 17:32, Benson Fung <benson.redhat at gmail.com> wrote:
> >>
> >> Hi,
> >>
> >> I got the following rule problem.
> >>
> >> The rule is like :
> >>
> >> 1.      |       rule "Rule1"
> >> 2.      |           dialect "mvel"
> >> 3.      |           when
> >> 4.      |               ad : ApplicationData( age == "null" , age.size()
> >> == 0)
> >> 5.      |           then
> >> 6.      |               ad.setReturnMsg( "age should not be null or
> empty"
> >> );
> >> 7.      |       end
> >>
> >> where setReturnMsg is a method of ApplicationData Fact();
> >>
> >> However, I got the validation error :
> >>
> >> [Rule1] [ERR 101] Line 4:49 no viable alternative at input ')' in rule
> >> "Rule1" in pattern ApplicationData
> >> [Rule1] [ERR 102] Line 4:51 mismatched input '==' expecting ')' in
> >> rule "Rule1" in pattern ApplicationData
> >>
> >> Please help what the problem is.
> >>
> >>
> >> Thanks
> >> _______________________________________________
> >> rules-users mailing list
> >> rules-users at lists.jboss.org
> >> https://lists.jboss.org/mailman/listinfo/rules-users
> >
> >
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> >
> >
>
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