Re: Avoid Level checks was ( Generic RPG File Handler for File I/O using OA)

[Frank Kolmann <Frank.Kolmann@xxxxxxxxx>]

I learnt too late, but this is how to avoid level checks.

In RPG programs never ever use PF, only ever use LF. (Perhaps change the 
RPG compiler to enforce this?)

It is even possible to retro fit this concept to old code with a bit of 
file renaming and recompilation of the PF and related LF.

Then never ever change LF DDS, only create new LF as needed.

To change PF you only ever add fields to the end of the field list, even 
if it means data is stored in two fields in the case of field size 
extension.

Recompile the PF and related LF and your programs will work fine. The 
only programs you need to change is those using the new fields.

Fwiw
Frank


On 27/06/2022 3:19 am, Jon Paris wrote:
> "So far I haven't found an example where I can see how to use them for SQL CRUD operations.  It looks like it works great for RPG file operation codes."
>
> And you won't find any because that is not what OA was designed to do.  As I said earlier it was designed purely to allow conventional RPG op-codes to access devices not directly supported by RPG.
>
>
> Jon P.
>
> I developed a program to do all this using JSON request/response avoiding
> dependency on a file structure.    This way If my RFID changes on a file my
> RPG programs will not give level checks:)