Re: READE EOF Handling/Repositioning

[Niels Liisberg <nli@xxxxxxxxxxxxxxxxx>]

SETGT with a partial key will do the trick. Simply omit the final key/keys
from you keylist / DS

On Sat, Feb 29, 2020 at 3:35 PM Patrik Schindler <poc@xxxxxxxxxx> wrote:

> Hello,
>
> on some occasions, I've come across the following scenario again and again:
>
> I READE a keyed file and eventually hit EOF (because no more records with
> the given key are available).
>
> The ILE RPG Reference states: "If a READE operation is not successful, you
> must reposition the file: for example, using a CHAIN, SETGT, or SETLL
> operation." (aka, the same as with a plain READ).
>
> For a normal READ, I'll do a SETGT to *HIVAL and can READP from there in a
> backwards order. However, I have no idea how to achieve the same with
> READPE: I don't know how to tell SETGT to position on the last record
> before EOF considering a given key value.
>
> So far, I managed to change the basic program logic and database files to
> omit READE but eventually I'll come across such a scenario where this might
> not be possible.
>
> Ideas welcome. But please refrain from comments like "use SQL". :-) Thanks!
>
> :wq! PoC
>
> PGP-Key: DDD3 4ABF 6413 38DE - https://www.pocnet.net/poc-key.asc
>
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