Re: RPG redbook

Not being funny Justin - but do you in all honesty think that it is possible to come up with an implementation that everyone would agree with? I don’t.

I also have my own issues with this part of the Redbook - but then I also did when it was first written back in the V4R2 timeframe.

The important thing to note is that at the time the book was written this was a topic that needed to be discussed. As such it had to be pitched in a way that would make sense to the target audience. The way in which it was done was a compromise - as was much of the redbook content. Could/should it have been updated beyond just changing the code to free-form ? Probably - but apparently that wasn’t practical given the time and $ constraints.

Maybe you could write up an alternative approach and submit it to IBM? The Redbook is still only in draft form.


Jon Paris

www.partner400.com
www.SystemiDeveloper.com

On Oct 26, 2016, at 9:59 AM, Justin Taylor <JUSTIN@xxxxxxxxxxxxx> wrote:

This topic is talking about a new RPG book IBM is publishing, so the author's implementation is the point.



-----Original Message-----
From: Nathan Andelin [mailto:nandelin@xxxxxxxxx]
Sent: Tuesday, October 25, 2016 1:23 PM
To: RPG programming on the IBM i (AS/400 and iSeries) <rpg400-l@xxxxxxxxxxxx>
Subject: Re: RPG redbook

It's hard for me to answer for the "author", because I don't really like his implementation. I just agree with the premise of designing software which provides a "separation of concerns", as opposed to a "big ball of mud".

I suppose it solves the problem of having to buy tools to analyze and outline your software to be able to understand it. Instead, your software implements a set of patterns which are cohesive and well-known.

Someday you may flip a switch in a service program which points its procedures to a remote DB rather than the local DB without impacting applications.

If your DB I/O service programs implement a known interface, someday you may deploy a utility which automatically exposes all of them via REST web services APIs.

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