Re: data structure overlay question.

[PatrickConner@xxxxxxxxxxxxxxxxx]

Your code looks reasonable to me. I would expect it to work, too. I have
some advice based only on my meandering experience.

At some point I ran into trouble overlaying directly over the DS name. I,
also, adopted the idea a character field overlaying the record format.
Every overlay from that point is over the character field. And use *next on
the first field in the overlay, too.

DDSINPUT        E DS                  EXTNAME(DSUPDPAG)
D DSInPutFld                          Overlay(DSInPut)
D $fill1                              like(QZSESS ) overlay(DSInPutFld:
*next)
D $fill2                              like(QZBTCH ) overlay(DSInPutFld:
*next)
D $fill3                              like(QZREF  ) overlay(DSInPutFld:
*next)
D $QzAmt                              like(QZAMT1 ) overlay(DSInPutFld:
*next)
D                                      dim(12) inz(0)
D $QzChk                              like(QZCHK1 ) overlay(DSInPutFld:
*next)
D                                      dim(12)

This is freehand code after a cut & paste from your code. If I missed
something, sorry. I'm only try to give you an idea of what I do.

Patrick Conner
www.ConnecTown.com
(828) 244-0822



                    "Richard B Baird"
                    <rbaird@esourceconsu        To:     rpg400-l@midrange.com
                    lting.com>                  cc:
                    Sent by:                    Subject:     data structure 
overlay question.
                    rpg400-l-admin@midra
                    nge.com


                    01/03/02 01:10 PM
                    Please respond to
                    rpg400-l






hey all,

I'm not really clear about the ins and outs of overlaying data structure
subfields, I was hoping someone could lend a hand.

(see code below) I'm having trouble overlaying arrays $QzAmt and $QzChk to
redefine QZAMTx and QZCHKx fields.

When run in debug, QZSESS and $fill1 have the same value, but that's where
the overlays end.
fill2 and 3, as well as the two arrays have blanks (hex 40) and when
DSINPUT is displayed in debug, it appears that only $fill1 overlays the
data structure.  the rest are appended to the end of it.

I know I've got this wrong somehow.  Can anyone guide me?

this is what my code looks like:

Thanks in advance,

Rick


----
DDSINPUT        E DS                  EXTNAME(DSUPDPAG)

D $fill1                              like(QZSESS ) overlay(DSINPUT)
D $fill2                              like(QZBTCH ) overlay(DSINPUT:*next)
D $fill3                              like(QZREF  ) overlay(DSINPUT:*next)
D $QzAmt                              like(QZAMT1 ) overlay(DSINPUT:*next)
D                                      dim(12) inz(0)
D $QzChk                              like(QZCHK1 ) overlay(DSINPUT:*next)
D                                      dim(12)

external data structure DSUPDPAG looks like this:

   1     25    A      QZSESS
  26     31    S    0 QZBTCH
  32     35    S    0 QZREF
  36     43    S    2 QZAMT1
  44     51    S    2 QZAMT2
  52     59    S    2 QZAMT3
  60     67    S    2 QZAMT4
  68     75    S    2 QZAMT5
  76     83    S    2 QZAMT6
  84     91    S    2 QZAMT7
  92     99    S    2 QZAMT8
 100    107    S    2 QZAMT9
 108    115    S    2 QZAMTA
 116    123    S    2 QZAMTB
 124    131    S    2 QZAMTC
 132    132    A      QZCHK1
 133    133    A      QZCHK2
 134    134    A      QZCHK3
 135    135    A      QZCHK4
 136    136    A      QZCHK5
 137    137    A      QZCHK6
 138    138    A      QZCHK7
 139    139    A      QZCHK8
 140    140    A      QZCHK9
 141    141    A      QZCHKA
 142    142    A      QZCHKB
 143    143    A      QZCHKC
 144    153    A      QZACTI
 154    159    S    0 QZPROD