RE: MVC in RPG?

I was having a debate with another gent (Greg) on this very topic last week.

http://imho.midrange.com/2007/09/08/the-rpg-cycle-jsf-would-like-it-but-cant
-have-it/

If you are just starting out with your MVC concepting I would simply
recommend doing a lot more ILE to organize your code into reusable segments.
After you do that for a project then go back and review some MVC theory
articles and you will see right away what they are trying to accomplish.
You could go the MVC article reading direction first, but theory can get
thick real fast if you haven't at least tried to do more ILE.

What does "more ILE" mean? Put all of your business logic and file access
into reusable modules as it makes sense. I say "as it makes sense" because
purists will tell you that ALL I/O should be in modules, but I disagree when
it comes to RPG because we don't have concerns about multiple DB abstract
implementations like Java/JDBC has.

Anybody know of a solid article introducing MVC to RPG programmers using RPG
terms?

Aaron Bartell
http://mowyourlawn.com


-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx [mailto:rpg400-l-bounces@xxxxxxxxxxxx]
On Behalf Of Mike
Sent: Sunday, September 23, 2007 6:43 PM
To: RPG programming on the AS400 / iSeries
Subject: Re: MVC in RPG?

Yep, that one. I just noticed the thread from last week talking about it.
I'll have to go back and read that.

MVC breaks the program into layers. Display logic (so you could use green
screen, web, xml, etc.), business logic, and data logic. I am just wondering
if it is worth the trouble or is it too complicated to even bother with and
if others have done, how.

On 9/23/07, Kyle Collie <kcollie@xxxxxxxxx> wrote:

Model. View, Controller

http://en.wikipedia.org/wiki/Model-view-controller


On 9/23/07, Richard Reeve <richreeve@xxxxxxxxx> wrote:

O.K. I'll bite...........What is MVC?

Mike <koldark@xxxxxxxxx> wrote: I will be completely rewriting a
couple

applications soon. From what I

gather so far, we are scratching the whole existing system (written

around

the time I was a baby) and starting with a new DB and new code. I
think

now

is the time to "do it right," if there is such a thing. Are people
doing

any

sort of MVC style programs? If so what are you doing? Is it more

flexible

than the "normal" method. What have you done in new applications
that

made

the whole process quicker and more flexible (besides, you know, an

actual

project plan)?

--
Mike Wills
http://www.linkedin.com/in/mikewills
Blog - http://mikewills.name
Podcasts - http://podcastmike.com
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Warmest Regards,

Rich


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