[rules-users] "Trying to create a restriction for an empty restriction" error
I am migrating my 3.0.6 rules into 4.0 but I am getting the following error in
Drools IDE:
"Trying to create a restriction for an empty restriction"
I am basically using an inline-eval (I believe this is the new terminology for
the ->() construct):
Rule
when
c1:Child()
c2:Child(
age -> (Math.abs(age - c1.age) < 10),
...)
then
...
end
If I remove the "age -> ..." line the error goes away.
Along the same lines I am also wondering if there is a better way (aside from
using "->()", which has a lower perf as I understand it) of doing the
following:
Rule
when
p1: Person()
p2: Person(
...,
sex -> (
(sex == "M" && p1.sex == "F")
|| (sex == "F" && p1.sex == "M")
)
)
then
insert(new Couple(p1, p2));
end
thanks,