RE: %kds flexible number of keys -- RPG400-L

You are right Birgitta, using constants will make it more readable.
Thanks for the tip.

> -----Oorspronkelijk bericht-----
> Van: rpg400-l-bounces@xxxxxxxxxxxx 
> [mailto:rpg400-l-bounces@xxxxxxxxxxxx] Namens HauserSSS
> Verzonden: zaterdag 28 mei 2005 12:16
> Aan: RPG programming on the AS400 / iSeries
> Onderwerp: AW: %kds flexible number of keys
> 
> Hi guys,
> 
> if I use %KDS, I always create constants for the number of keys.
> If I have to change it, i.e. an additional key field must be inserted.
> I only have to change the constant.
> I do not have to search for say '3' which may be coded 
> several times in the same source, but for KeyInclMyField.
> I think it's easier to read, because I normally not know by 
> heart if i.e. OrderNo is key 8 or 9 or whatever.
> 
> D KeyInclATFINR     C                      const(1)
> D KeyInclATKNDB     C                      const(2)
> D KeyInclATBNR      C                      const(3)
> D KeyInclATPNR      C                      const(4)
> *-------------------------------------------------------------
> -------------
> /Free
>    SetLL %KDS(KeyATEIL0: KeyInclATBNR)  LLATEIF0;
>    ReadE %KDS(KeyATEIL0: KeyInclATKNDB) LLATEIF0;
>    Chain %KDS(KeyATEIL0: KeyInclATPNR)  LLATEIF0; /End-Free
> 
> But to be honest I prefer to list the keyfields, if possible.
> 
> Birgitta
> 
> 
> -----Ursprungliche Nachricht-----
> Von: rpg400-l-bounces@xxxxxxxxxxxx
> [mailto:rpg400-l-bounces@xxxxxxxxxxxx]Im Auftrag von Simonse, 
> Arco (CMK)
> Gesendet: Freitag, 27. Mai 2005 23:00
> An: RPG programming on the AS400 / iSeries
> Betreff: RE: %kds flexible number of keys
> 
> 
> I also use that method (key1 : key2 : key3) in other 
> situations and found it very useful.
> But here I have to code for key structures with many fields. 
> It depends on calculations in the code for how many keys the 
> file would be updated.
> The number of keys to be used can vary from 7 keys to 19 keys 
> for example.
> 
> Now I just repeat the code:
> 
> when KeyNum = 7;
>    setll %kds(KeyGroup_ds: 7) ttvlcdl01
> when KeyNum = 8;
>    setll %kds(KeyGroup_ds: 8) ttvlcdl01
> ......
> when KeyNum = 19;
>    setll %kds(KeyGroup_ds: 19) ttvlcdl01
> 
> In this way I become a lot of repeating code and I would try 
> to avoid that.
> 
> > -----Oorspronkelijk bericht-----
> > Van: rpg400-l-bounces@xxxxxxxxxxxx
> > [mailto:rpg400-l-bounces@xxxxxxxxxxxx] Namens Alan Campin
> > Verzonden: vrijdag 27 mei 2005 19:59
> > Aan: rpg400-l@xxxxxxxxxxxx
> > Onderwerp: %kds flexible number of keys
> >
> > Why use %kds at all. Just use
> >
> > Setll KeyField1 FileName
> >
> > or
> >
> > Setll (KeyField1:KeyField2) FileName
> >
> > etc....
> >
> > Used to use %kds but don't since I found this trick.
> > --
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