AW: VARLEN field read into LIKEREC DS

Hi Barbara,

>>Within your program, a VARYING field has a fixed storage size (the maximum
length of
>>the data plus two bytes).  If you do %SIZE on the field, you will always
>>get the same result no matter what the current length is.

Does this mean, that in RPG always the maximum length of the database field
will be reserved,
even if the database field is defined with VARLEN(xx) or ALLOCATE in SQL?

Birgitta

-----Ursprungliche Nachricht-----
Von: rpg400-l-bounces@xxxxxxxxxxxx
[mailto:rpg400-l-bounces@xxxxxxxxxxxx]Im Auftrag von Barbara Morris
Gesendet: Donnerstag, 26. Mai 2005 02:23
An: rpg400-l@xxxxxxxxxxxx
Betreff: Re: VARLEN field read into LIKEREC DS


Tony Carolla wrote:
> ...
> D M DS LikeRec(RCBI1 : *Input) Inz
>
> I see that the DS is created with a VARYING alpha field, and a subsequent
> PDATE field.
>
> My question is this: Can I set up a pointer to point at the M.PDATE field,
> and know that every record that I read from the format into the M data
> structure, it will point at the M.PDATE field? Or do the subsequent fields
> after the VARYING field shift based on the length of the VARYING field?
>

You can count on M.PDATE staying in the same place.  Within your
program, a VARYING field has a fixed storage size (the maximum length of
the data plus two bytes).  If you do %SIZE on the field, you will always
get the same result no matter what the current length is.

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