R: "OVERLAY" in dds

["Marco Facchinetti" <facchinetti@xxxxxxxxx>]

If you can mail the full example of the code (the DS definition) .....

----- Original Message -----
From: Danny Oentung <DANNY@MULTIPOLAR.CO.ID>
To: <RPG400-L@midrange.com>
Sent: Friday, March 16, 2001 3:45 AM
Subject: "OVERLAY" in dds


> Right now I'm in a project which use heavily data structure as a message
> format from one program to another. The datastructure consist more than
250
> fields and use many overlaying keyword to merge more than one field. The
> problem is because some of my program sometime need a 2 or three variable
> data structure(the same one) in my program at the same time so I have to
> make/maintain about 3 copybook of that data structure...which is all the
> same except that the subfield name of each one of them i change
accordingly
> it's data structure name.
> example:
>
> DQSMFRecord       DS
> D/COPY $VISMFQ
> DLSMFRecord       DS
> D/COPY $VISMFL
>
> the content of $VISMFQ and $VISMFL is the all the same except the name of
> the subfield i have to change the first part to Q and another to L.
> I know i can do that in DDS (physical file) using PREFIX(xx:y) keyword,
but
> how about the overlaying fields or if i want to define two fields that
refer
> to one position only like what i can do in overlaying keyword.
> Do i have to maintain all these copy books??(not integrated)or is there
> other way....If u have any opinion please help me....and thanks for all.
>
> best regards,
> Danny Oentung
> Programmer/Analyst
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