Re: Variable file name in rpg /or cl

RPG400-L@midrange.com writes:
>I need to have a cl program pass a variable to either a rpg or cl program.
>
>This variable is the file name that the program needs to read from.
>
>Any suggestions on how to do this???
>
>
>Thanks
>
>Chris 

AFAIK, you can't use a variable as a file name directly, but you _can_ use
OVRDBF to do what you want. If your RPG program used file FILNAM, and you
want to use the value in variable VARFIL, simply call it from a CL where
you have previously performed an OVRDBF:

OVRDBF  FILE(FILNAM) TOFILE(&VARFIL)
CALL            RPGPGM
DLTOVR  FILNAM
. . . .

I believe this will also work to call a CL program that has a DCLF FILNAM
statement. . . .

The only "gotcha" is that you do need an actual file in order to compile
your program. You can either have the program refer to a real file, or you
can create a CL that performs the OVRDBF and then compiles the source.

BTW, you can also use OVRDBF to specify the particular member of the file
to use. I found this especially useful in our Y2K remediation, when I had
a program operating on many different members in different source files: I
stored the file and member names in a separate file and had a CL read each
record in that file, perform an OVRDBF, and then call the program that
actually did the work. Very handy. . . .

HTH,

Mike Naughton
Senior Programmer/Analyst
Judd Wire, Inc.
124 Turnpike Road
Turners Falls, MA  01376
413-863-4357 x444
mnaughton@juddwire.com


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