Re: Time to Document Callbacks

On Oct 24, 2009, at 2:50 PM, Tim Bunce wrote:

> Callbacks are handled by the method dispatcher so all method names are
> valid (so don't bother trying to list them in the docs :)
>
> Plus the two special cases for connect_cached: 'connect_cached.new'  
> and
> 'connect_cached.reused'. (There's also '*' but that's not really  
> recommended.)
>
> Thanks!
>
> Tim.
>
> p.s. Might be worth skimming through the archives
> http://tinyurl.com/yl582mt

Thanks. Following up on [this post](http://markmail.org/message/fus3dfauxs6yz6sv 
), I wrote this code:

     my $dbh = DBI->connect('dbi:Pg:dbname=bric', '', '', {
         Callbacks => {
             execute => sub { print "Set in DBH\n"; return; }
         }
     });

     my $sth = $dbh->prepare('SELECT id FROM pref WHERE name = ?');
#    $sth->{Callbacks}{execute} = sub { print "Set in STH\n"; return; };
     $sth->execute('Time Zone');

It output nothing. When I uncommented that second-to-last line, it  
output "Set in STH". So it seems that a callback added to the dbh for  
a statement method name does not end up getting passed on to the  
statement handle. So I guess the Callbacks attribute is not passed on  
to statement handles created for the database handle? Seems a shame…

Best,

David