I'm not sure if this is a good question. Please forgive me if this is
one of the 'it depends' question without a use case.
Imagine these relationships: 1 A has many B, and 1 B has many C...
In reverse: C has 1 B, and B has 1A. By transitivity, C has 1 A.
in DB, we have:
TableA
a_id
TableB
b_id
a_id (fk to TableA)
TableC
c_id
b_id (fk to TableB)
If a method in object C needs something from A to carry out the
operations...
solution 1.) the most obvious, but quite procedural way of doing OO:
> getB().getA().someMethod()
It works, but it doesn't smell right. Some would say this is not OO,
but procedural programming with CFCs. Correct?
solution 2.) let C have a reference to A, assigned by a setter or at
Init()
> variables.a.someMethod()
It works, but... C does not really have a reference to A in the DB, so
the DAO will be very different from DB, or is it considered okay?
solution 3.) Maybe the problem is wrong? move the method into A, and
pass C in as argument
<cfcomponent name="a">
function someMethod(C c) {
// do things in A
c.doSomething();
}
</cfcomponent>
Thanks,
Henry Ho
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