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Although everyone else on here might cringe at this suggestion,
FMTDTA may also be a solution for you. You can specify sorting
of specific positions within a source member. Something like
this in your CL program:

FMTDTA INFILE((*LIBL/MS005W1)) +
OUTFILE(SPARCS/MS005S1) +
SRCFILE(*LIBL/QFMTSRC) SRCMBR(SORTMES1) +
OPTION(*NOPRT)

with the corresponding source member from QFMTSRC:

* The header specifies a total
* sort field length of 62 chars
* ascending and omit output of
* the control field (X).
HFILE 62A X
* The field specifies a total
* sort field length of 62 chars
* ascending and omit output of
* the control field (X).
FNC 493 554 MESKEY
FDC

Just a thought...

Terry

-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx
[mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Zak Metz
Sent: Tuesday, September 24, 2013 3:09 PM
To: MIDRANGE-L@xxxxxxxxxxxx
Subject: Sort input file by arbitrary position/length

I have an existing COBOL application that cannot be changed,
at least, let's say it can't.
The COBOL application accepts an input file of an arbitrary
record length like so:
SELECT C1BMNAM
ASSIGN TO DISK-C1BMNAM
FILE STATUS C1BMNAM-FILE-STATUS
.
I want it to process the file sorted by a certain
position/length (ZIP Code) determined at run time. But if I
create an LF, it doesn't read it in order by key.
What I thought I could do was use OPNQRYF to do that sorting
on the fly, something like:
OPNQRYF FILE((METZ3410/PF)) KEYFLD((*MAPFLD/ZIP)) MAPFLD((ZIP
'%sst(pf 133 5)')) OPNID(C1BMNAM) SEQONLY(*NO) OPNSCOPE(*JOB)
That works for a file with one field. The COBOL is none-the-wiser.
But the input file might have multiple fields. All I know is
the position/length.
Is there some way to make my MAPFLD substring the entire
record without knowing what field the position/length
actually falls into? I just want to substring the entire record.
Because the file may be very large, I do not want to take the
performance hit of copying it to a single-field file. But if
there were some other way to trick it...
Thanks in advance for any and all suggestions.

Zak Metz, Principal Software Engineer
Pitney Bowes Software
1664 Princess Ln | Frisco TX | 75034-8715 | USA
507-384-9069 | www.pb.com<http://www.pb.com/>
zak.metz@xxxxxx<mailto:zak.metz@xxxxxx>

Every connection is a new opportunity(tm)


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