RE: ILE Concepts

["Birgitta Hauser" <Hauser@xxxxxxxxxxxxxxx>]

> > The project consists of multiple modules which are bound into one service program. There are f. e. the following modules:

> > - frame builder
> > - frame parser
> > - commands
> > - main module

Again why should I bind multiple modules instead of having a service program for each functionality (independent of the object/program or not)
Procedures (IHMO) must be encapsulated and callable from everywhere just to make the development very flexible.

... in either way I didn't want to open a can of worms

Mit freundlichen Grüßen / Best regards

Birgitta Hauser
Modernization – Education – Consulting on IBM i


"Shoot for the moon, even if you miss, you'll land among the stars." (Les Brown)
"If you think education is expensive, try ignorance." (Derek Bok)
"What is worse than training your staff and losing them? Not training them and keeping them!"
„Train people well enough so they can leave, treat them well enough so they don't want to.“ (Richard Branson)


-----Original Message-----
From: RPG400-L <rpg400-l-bounces@xxxxxxxxxxxxxxxxxx> On Behalf Of Mihael
Sent: Dienstag, 1. November 2022 18:23
To: rpg400-l@xxxxxxxxxxxxxxxxxx
Subject: Re: ILE Concepts

I try to keep my code organized. If we take for example my STOMP client (which is a client for communicating with a message queue system like Apache Artemis and probably also IBM MQ).

The project consists of multiple modules which are bound into one service program. There are f. e. the following modules:

- frame builder
- frame parser
- commands
- main module
- ...

The user uses at least the main module and the commands module but never needs to call anything from the frame parser because this is called internally.

Could I have munched all together in one source/module ... yes. But I don't like source members with tens of thousands of code lines. This become very quickly unwieldy. It is much harder to maintain than multiple source members with only some hundreds or at least less than
2000 lines of code.

My 2 cents.

Mihael

On 01.11.22 18:03, Birgitta Hauser wrote:
> Thanks for the answers about my ILE questions ... you mostly confirmed 
> what I already told them (but ... as said the new guy knows everything better).
>
> ... but I have another may be silly question ... but until now nobody 
> could answer it in a way that I'm satisfied:
>
> Why to bind multiple modules in a single service program?
>
> If the functions/procedures are grouped depending on their 
> functionality into a source member and almost all functions are 
> exported and the exported ones are strongly encapsulated and only RPG is used.
> Why would we need multiple modules with functions which can be grouped 
> together in a service program?
> If the modules include functions with different functionality why we 
> should bind them into a single service program?
> And if we are working with different programming languages, why not 
> using a service program for each language.
>
> ... activation time cannot be the reason, because the service programs 
> are bound with deferred. Also before we had deferred the activation 
> time was very fast, at least at this customer (and he currently has 
> around 120 service programs with around 8000 exported functions in total).
> ... working with different activation groups may also cause the same 
> service program to be activated multiple times in the same job. The 
> bigger the service program the more must be loaded (multiple times) 
> into memory
>
> Mit freundlichen Grüßen / Best regards
>
> Birgitta Hauser
> Modernization – Education – Consulting on IBM i
>
>
> "Shoot for the moon, even if you miss, you'll land among the stars." 
> (Les
> Brown)
> "If you think education is expensive, try ignorance." (Derek Bok) 
> "What is worse than training your staff and losing them? Not training 
> them and keeping them!"
> „Train people well enough so they can leave, treat them well enough so 
> they don't want to.“ (Richard Branson)
>
>
> -----Original Message-----
> From: RPG400-L <rpg400-l-bounces@xxxxxxxxxxxxxxxxxx> On Behalf Of 
> Charles Wilt
> Sent: Dienstag, 1. November 2022 16:50
> To: RPG programming on IBM i <rpg400-l@xxxxxxxxxxxxxxxxxx>
> Subject: Re: ILE Concepts
>
> On Tue, Nov 1, 2022 at 9:36 AM Jon Paris <jon.paris@xxxxxxxxxxxxxx> wrote:
>
> > I would also add that I find their current method of one source one 
> > object also rather dated and pointless. But is is sadly a quite 
> > widely used approach.
> Agreed, it makes no sense to limit yourself to 1 module per service program.
> I've been asking for our home-grown build process to be enhanced for 
> 5+ years now... :(
>
> Charles
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