Re: SETGT and end-of-file - documentation incorrect?

Hi Dave

Thanks for your reply - as I sent to Chuck's reply, I gave incorrect information - SETGT using the highest RRN did turn %found() to *OFF, as it should.

Your point about positioning lines up with what I've been thinking about since posting this. Again, thanks for expanding on that - I had been thinking today - yeah, I know, odd, right? - and came to the thought that "positioning to end of file" is not the same as setting the EOF indicator *ON.

Ay! Ay! Ay! Some days I should have stayed in bed!

Regards
Vern

On 12/6/2015 3:34 PM, David Shaw wrote:

Vern,

I don't have the docs in front of me, but what you're saying doesn't jibe
with my experience.

SETLL and SETGT are positioning operations, not I/O operations. The EOF
condition is set by an I/O operation, not a positioning operation. In your
example, you're positioning to the end of the file, so a subsequent READ
will set EOF. However, a subsequent READP will NOT set EOF, and you can
continue using READP to retrieve all records in the file until you get to
the beginning, at which time EOF will be set if you try to READP past the
beginning.

By this interpretation, SETLL and SETGT should always set record found on
and EOF off, since the correct READ or READP I/O afterwards will always
find a record (assuming the file isn't empty, of course). Does that make
sense, and is it consistent with the documentation you're looking at?

Dave Shaw

On Sun, Dec 6, 2015 at 9:57 AM, Vernon Hamberg <vhamberg@xxxxxxxxxxxxxxx>
wrote:

The ILE RPG Reference says this in the section on SETGT - RPG/400
reference says the same thing =

If the SETGT operation is not successful (no-record-found condition),
the file is positioned to the end of the file.

I've a situation where I'm using SETGT with relative record numbers. If I
have an RRN = last RRN (or greater than that last one), %found() is *ON,
%eof() is *OFF.

So this seems to say that the docs are incorrect. Any verification or
refutation, please?

The statement I'm using is in free format, as here -

setgt(e) 18 file-name;

Thanks
Vern
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