RE: Chain doesn't set %EOF

[Alan Campin <Alan.Campin@xxxxxxx>]

My recommendation. 

SetLL(SomeKey) File;
DoU 0 = 1;
  Read (File);
  If %Eof(File) or
    SomeKey <> KeyField;
    Leave;
  EndIf;
  // Do something
EndDo;

Was told by IBM to never use a READE, always use a READ. From a Common 
conference years ago.  

-----Original Message-----
From: Paul Morgan [mailto:pmorgan@xxxxxxxxxxxxxx]
Sent: Tuesday, March 29, 2005 9:39 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
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