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  1.  Home
  2. RPG400-L
  3. October 2005

Re: Field expansion tool methodology

The IBM command CHGPF (Change Physical File) will allow you to specify a
DDS source member and will then "convert" the existing file (and all related logicals) to the new field lengths, including initializing new numeric fields to zero, and dropping fields (with a warning). You need an exclusive lock on the file to execute this. Also use CHGPF on the "work files" that may be built via CRTDUPOBJ (...never cpyf..) 
or directly from the DDS source.
The rpg will depend on how your code is defined. Internal I specs & O specs will take you a while, and beware of newly created records causing decimal data errors. Building work fields with hardcoded lengths in RPG are also a lot of work to find. There was more written about this around Y2K and some of that should be still online. 
good luck
jim
----- Original Message ----- From: "Bob Cozzi" <cozzi@xxxxxxxxx> 
To: "'RPG programming on the AS400 / iSeries'" <rpg400-l@xxxxxxxxxxxx>
Sent: Sunday, October 23, 2005 12:21 PM
Subject: RE: Field expansion tool methodology
You could do it the way most people do... buy a tool from a vendor and spend 
time converting the field instead of writing a tool that allows you to
convert the field.

-Bob Cozzi
www.RPGxTools.com
RPG xTools - Enjoy programming again.


-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx [mailto:rpg400-l-bounces@xxxxxxxxxxxx]
On Behalf Of M.Kamaleshwar
Sent: Saturday, October 22, 2005 5:31 AM
To: rpg400-l@xxxxxxxxxxxx
Subject: Field expansion tool methodology

Hi,

   I need to write a tool program that would expand fields in files
(database / display / printer) and also in COBOL/400 programs.
Can anyone throw some light on how to go about it - suggest a methodology ? 
Are there any links or sites on this ? If any of you have any
documents/notes/ white paper on this topic , please send it to me.

Thanks in advance !
Kamlesh





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