RE: RPGV?

Jerry,

Namespaces are especially important in naming procedures... just imagine
that you have customers and employees for which you have written a
procedure to get their name... in that case you would end up with twice
the procedure getName(). This means that you need to rename them to for
example customergetName and employeegetName, but whenever the service
program is not developed inhouse, you might not have the source.

In case you would have namespaces, it would become customer.getName and
employee.getName... but again, it really only makes sence to me if you
can instantiate objects (and have methods). For example

cus1 = new Customer(1);
name = cus1.getName();
emp1 = new Employee(1);
name2 = emp1.getName();

... and since you have object instances...

emp2 = new Employee(2);
If emp1.getName() = emp2.getName();

This is still far from OO, but would life so much easier.

Kind regards,
Paul

-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx
[mailto:rpg400-l-bounces@xxxxxxxxxxxx] On Behalf Of Jerry Adams
Sent: woensdag 13 januari 2010 15:52
To: RPG programming on the IBM i / System i
Subject: RE: RPGV?

I admit that I had never heard the term "namespaces" prior to this
thread. So I did a search. Most of the references I found dealt with
XML and a few with Java script neither of which (correct me if I err) is
OO.

But that's not my point. If I interpreted the sources correctly (again,
corrections welcome), qualified data structures are a namespace. Beyond
that what is meant by namespaces in RPG? I.e., are we talking about
qualifying the field names by file/table name, such as FILEA:FIELDA,
FILEB:FIELDA, with a "Qualified" keyword on the F-spec? Or something
else/more? Why is this such a hot button?

Thanks.

Jerry C. Adams
IBM System i Programmer/Analyst
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