AW: Chain doesn't set %EOF

["HauserSSS" <Hauser@xxxxxxxxxxxxxxx>]

Hi guys,

according to the SQL RPG Reference %EOF(FileName) works as follows:

The following operations, if successful, set %EOF(filename) off.
If the operation is not successful, %EOF(filename) is not changed.
%EOF with no parameter is not changed by these operations.
1. CHAIN (Random Retrieval from a File)
2. OPEN (Open File for Processing)
3. SETGT (Set Greater Than)
4. SETLL (Set Lower Limit)
When a full-procedural file is specified, this function returns '1'
if the previous operation in the list above, for the specified file,
resulted in an end of file or beginning of file condition.

Birgitta

-----Ursprüngliche Nachricht-----
Von: rpg400-l-bounces@xxxxxxxxxxxx
[mailto:rpg400-l-bounces@xxxxxxxxxxxx]Im Auftrag von Lim Hock-Chai
Gesendet: Dienstag, 29. März 2005 19:19
An: RPG programming on the AS400 / iSeries
Betreff: RE: Chain doesn't set %EOF


That is how it work.  If you want to get around that, you could try to use
%status() = 0

-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx
[mailto:rpg400-l-bounces@xxxxxxxxxxxx]On Behalf Of Paul Morgan
Sent: Tuesday, March 29, 2005 10:39 AM
To: rpg400-l@xxxxxxxxxxxx
Subject: Chain doesn't set %EOF


Why doesn't a failed CHAIN (which sets off %FOUND) also set on %EOF?  I can
code a read loop as:

SetLL ( SomeKey) File;
ReadE ( SomeKey ) File;
DoW Not %Eof( File );
   // do something
   ReadE ( SomeKey ) File;
EndDo;

Rather that doing a SetLL/ReadE combo to start the loop it used to be
shorthand to code a Chain with:

Chain ( SomeKey ) File;
DoW Not %Eof( File );
   // do something
   ReadE ( SomeKey ) File;
EndDo;

except Chain doesn't fiddle with %EOF so this won't work.

Could do this with RPGIII.  You could put the same indicator for the CHAIN
NotFound indicator position and ReadE EndOfFile indicator position.  Any
possibility of getting Chain to set the %EOF indicator as well as the %FOUND
indicator?  Or would that break existing code?

Paul

--
Paul Morgan
Senior Programmer Analyst - Retail
J. Jill Group
100 Birch Pond Drive, PO Box 2009
Tilton, NH 03276-2009
Phone: (603) 266-2117
Fax:   (603) 266-2333



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