RE: Printing arrays through externally described printer file

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Well, it's been some time since I wrote the program and my memory isn't what
it used to be... IIRC the problem was external print file and the RPG III J
specs and compile time errors.  The memory is very fuzzy though.  So I think
I needed the dummy external file to get the override of the fields neatly
into the RPG program, then the array gets overridden to match the file specs
and the field names in the external print file are the ones from the dummy
external file.  In the program I refer to DT(x) and AM(x) while the external
dummy file accomplishes the rename to DATEnn and AMOUNTnn and the print file
itself only references DATEnn and AMOUNTnn.  You end up doing the override,
if you will, in "I" specs but you use the field only on "O" specs.  When you
compile the external print file you need something to reference (the
external dummy pf) because it can't know that there's an array named DT
that's 36 elements of 6.0 in your program.  That's why I've got the dummy pf
defined and it only has the arrays in it.  Clear?  'cuz I think I've even
confused myself now.  :-)

-----Original Message-----
From: Wills, Mike N. (TC) [mailto:MNWills@taylorcorp.com]
Sent: Monday, February 25, 2002 1:27 PM
To: 'rpg400-l@midrange.com'
Subject: RE: Printing arrays through externally described printer file


Tom, I guess I don't understand, this is what I have:

A          R DETAILA
A            DADESC        30   O     1
A            DATYPE        15   O    32
A            DAJANSLS       9  0O    48EDTCDE(1)
A            DAFEBSLS       9  0O    60EDTCDE(1)
  .
  .
  .
A            DADECSLS       9  0O   180EDTCDE(1)
A            DATOTALSLS    10  0O   192SPACEA(1)
A                                      EDTCDE(1)

Can I do an override like you can on a physical file in the input specs?

I         Field1         array(1)
I         Field2         array(2)
I         Field3         array(3)

Then I can do this

        Do       3      x
        Eval     array(x) = formula here
        enddo

instead of

        eval      Field1 = formula
        eval      Field2 = formula
        eval      Field3 = formula

-----Original Message-----
From: Westdorp, Tom

I've done it as follows:

An external PF for definition:
      A          R FOLPRTR                   TEXT('FOLIO LINE ITEMS')
      A            DATE01    R               REFFLD($DISPDATE)
      A            DATE02    R               REFFLD($DISPDATE)
      A            DATE03    R               REFFLD($DISPDATE)
.....
      A            AMNT01    R   -2          REFFLD(AMNT)
      A            AMNT02    R   -2          REFFLD(AMNT)
      A            AMNT03    R   -2          REFFLD(AMNT)
.....

Referenced in the RPGIV

D DTDS          E DS                  ExtName(FOLPRTDS)
D  DT                     1    144P 0 Dim(36) PackEven
D  AM                   145    288P 2 Dim(36)

and then referencing the external field names in the external print file
.....
      A            FLIO21    R        O     1SKIPB(026)
      A            DATE21    R        O   + 1REFFLD(DESC)
      A            AMNT21    R   -2   O   + 1REFFLD(AMNT)
      A                                      EDTCDE(K)
.....

Hope this helps
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