Re: [rules-users] Ask for help on rule authoring
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(a)gmail.com>:
Sorry, I don't use guided editors.
-W
On 25 March 2011 18:17, Benson Fung <benson.redhat(a)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(a)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(a)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(a)lists.jboss.org
> >> https://lists.jboss.org/mailman/listinfo/rules-users
> >
> >
> > _______________________________________________
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> > rules-users(a)lists.jboss.org
> > https://lists.jboss.org/mailman/listinfo/rules-users
> >
> >
>
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