[rules-users] Ask for help on rule authoring

[Wolfgang Laun]

If it's stored in a fact field of type int: yes.

The way you write it: no.

-W


On 25 March 2011 18:37, Benson Fung <benson.redhat at gmail.com> wrote:

> If the age is String type, can I use Integer.parseInt(age) to change
> to integer and then evaluate it?
>
> like
>
> when
>   ad : ApplicationData(Integer.parseInt(age) < 0)
> then
>  ad.setReturnMsg("age should not be negative 0")
> end
>
>
>
>
> 2011/3/26 Wolfgang Laun <wolfgang.laun at gmail.com>:
> > 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
> >> >
> >> >
> >> > _______________________________________________
> >> > rules-users mailing list
> >> > rules-users at lists.jboss.org
> >> > https://lists.jboss.org/mailman/listinfo/rules-users
> >> >
> >> >
> >>
> >> _______________________________________________
> >> rules-users mailing list
> >> rules-users at lists.jboss.org
> >> https://lists.jboss.org/mailman/listinfo/rules-users
> >
> >
> > _______________________________________________
> > rules-users mailing list
> > rules-users at lists.jboss.org
> > https://lists.jboss.org/mailman/listinfo/rules-users
> >
> >
>
> _______________________________________________
> rules-users mailing list
> rules-users at lists.jboss.org
> https://lists.jboss.org/mailman/listinfo/rules-users
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.jboss.org/pipermail/rules-users/attachments/20110325/5bf9e02d/attachment.html