RE: Externalizing input and output.

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 I suppose that I assumed that much.  I should know better.....you know what 
they say happens when one assumes.....
  Reeve Fritchman <reeve@ltl400.com> wrote: Hmmm...you need LVLCHK(*NO) on the 
file; otherwise any program (even an I/O
service program) using the file /will/ CPF4131.

-----Original Message-----
From: rpg400-l-admin@midrange.com [mailto:rpg400-l-admin@midrange.com]On
Behalf Of Richard Reeve
Sent: Thursday, January 31, 2002 10:00 AM
To: rpg400-l@midrange.com
Subject: Re: Externalizing input and output.

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Peter,
I'm not sure what you are looking for but I'll give you my two cents -
it is/has been standard procedure that when you add fields to a file, as
long as you add those fields to the end of the file (don't insert) then all
you would need to do is recompile those programs that you wish to have
recognize the newly added field(s). The other programs will still access
the file fine, but will not recognize the added fields.
Hope this helps.
Rich
Peter Colpaert
wrote: Hi all,

I have been reading the 'Who know you could do that...' redbook and found
the chapter on externalizing I/O very interesting.

However, the examples provided are very limited to say the least, and only
talk about data retrieval, not updates/deletes.

Does anyone out there have a document/source example that goes beyond this,
or do you know a site where I can find more information?

More specifically, I would like to be able to implement a system where I
can, for instance, add a field to a customer file (the file used in almost
all programs), and only have to recompile the module accessing the file and
the program where the new field is used, without the need to compile
hundreds of other programs, only to avoid a level check.

Any help would be highly appreciated.

Peter Colpaert
Application Developer
Honda Europe NV
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Ending a sentence in a preposition is something up with which I will not
put! - Yoda's High School English teacher.
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