• Subject: Re: LookAhead
  • From: CVWD@xxxxxxx
  • Date: Fri, 26 Sep 1997 16:38:14 -0400 (EDT)

In a message dated 97-09-26 05:18:21 EDT, you write:

> Hello All,
>  I used to use the record Look Ahead (NS  **) on my S36 RPG programs when
>  it was the best method to do certain processing.  As, you cannot use
>  Look ahead with externally defined AS400 files.  Has anyone found any
>  real neat replacements for this function?  I would appreciate a nudge in
>  the correct direction.

Try this:
1. Change the F spec to program-described.
2. Define a data structure based on the external description of your file.
 Call it RECORD.
3. Define another data structure based on the external description of your
file.  Call it NXTRECORD.  Use the prefix keyword on this definition so the
fields all have different names from the first data structure:  prefix(NXT).
4. Create an I spec for your file with just one field - the first data
structure.
5. Create a '**' I spec for your file with just one field - the second data
structure.

It compiles under ILE and seems to work but your mileage may vary.  HTH,
Lance.

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