Tim Bunce wrote:
>
> On Fri, Oct 24, 2003 at 11:00:55AM +0200, Steffen Goeldner wrote:
> > Is there any value in returning a value (pun intended)
> > from STORE? E.g.:
> >
> > sub STORE {
> > ...
> > return 1;
> >
> > For dbd_db_STORE_attrib(), DBI::DBD states:
> >
> > The return value is TRUE if you have handled the
> > attribute or FALSE otherwise.
>
> That's needed so the Driver.xst code knows if it should
> then call SUPER::STORE.
>
> > Does the same rule apply to STORE()? If so, where
> > is the returned value used?
>
> The only way for an application to get the return value is by calling
> STORE explicitly. I guess that might be useful in some situations.
Three cases cross my mind:
1) Return nothing (or an arbitrary value), i.e. the caller shouldn't
use that value.
2) Return a boolean value, indicating success or failure.
3) Return the new value.
Tim, can you settle on one of these cases? If so, I'd like
to include your recommendation into DBI::DBD.
BTW: Case 1, something like that:
sub STORE {
...
$dbh->SUPER::STORE($attr, $val);
return;
}
seems to collide with current practice:
sub begin_work {
...
$dbh->STORE('BegunWork', 1);
}
$rc = $dbh->begin_work or die $dbh->errstr;
Steffen
P.S.: Funny, a similar question entered the p5p mailing-list
<http://www.xray.mpe.mpg.de/mailing-lists/perl5-porters/2003-10/msg01249.html>
