[rules-users] The buss pass example of inference results in compilation errors, how to solve these?

[Wolfgang Laun]

On 20/03/2013, ajklunder2 <albert.jan.klunder at gmail.com> wrote:
> Thanks,
>
> Is that the solution? That seems odd to me because IsBadDebtor is an
> inferred object and should have the class Debtor.

This is completely unwarranted - why should it be so? Here, its
purpose is to represent a (new) fact in relation to a single given
fact, but there may be other inferred objects based on combinations of
facts.

> When you have to declare
> a class for every type of inferred object you are using that would be
> strange.

Not any stranger than Java which requires you to declare all classes
you are using. The Working Memory contains objects of Java classes.

> These classes would extend the class where they are inferred from
> and would be totally empty: no own attributes, nor methods.

This is in contrast to the way you are using it, i.e., passing a
reference to another object to the constructor.

BTW: You've missed an important point by using "insert" instead of
"insertLogical". See the "Drools Expert User Guide".

> They would only
> be declared to solve this compilation issue.
>

-W