It's documented somwhere and it's not experimental --
I've been using a DBI subclass for almost two years.
The reason for having to subclass different pieces is
that the DBI file actually contains a few related
packages. You need to subclass all of them to get things
to work.
If you get stuck, email me directly and I'll send you my
simple DBI subclass as an example, the caveat being that
it uses one or two internal pieces I can't send you. So
it's good as a template but it won't work as is.
----
Steve Sapovits
Global Sports Interactive
Work Email: [EMAIL PROTECTED]
Home Email: [EMAIL PROTECTED]
Work Phone: 610-491-7087
Cell: 610-574-7706
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> -----Original Message-----
> From: Karger, Amir [SMTP:[EMAIL PROTECTED]]
> Sent: Wednesday, July 18, 2001 2:01 PM
> To: DBI Perl mailing List (E-mail)
> Subject: RE: inheriting from DBI::db
>
> > > I'm planning on inheriting from DBI::db.
> > >
> > > My question is, is it safe to inherit from DBI::db?
> >
> > From: Mitch Helle-Morrissey [mailto:[EMAIL PROTECTED]]
> >
> > Look at the subclass.t test file that comes with the DBI
> > distribution. In
> > short, you'll need to inherit from all three DBI classes:
> > DBI, DBI::db, and
> > DBI::st. You'll need to use the init_rootclass() method so
> > your constructor
> > returns an object of the type you created instead of a DBI::db object.
> >
> > I've written a subclass which works fine.
> >
> > Mitch
>
> Interesting! I guess it's not documented yet because it's still
> experimental?
>
> Is this really necessary, though? Why can't I just say:
>
> --------------
> package MyDBI;
> MyDBI::ISA = qw(DBI::db);
>
> sub connect {
> my $class = shift;
> my $dbh = SUPER::connect(@_);
> bless $dbh, $class;
> $dbh->do_other_fancy_things;
> return $dbh;
> }
>
> sub do_other_fancy_things {
> # highly secret and exciting code not yet written
> }
> ---------------
>
> Then, it seems to me, for everything except connect, the regular DBI stuff
> will happen, right? I'm a bit wary of using the init_rootclass since
> (a) others may be using my code for Important Things, and (b) subclass.t
> says, "This whole mechanism is new and experimental - it may change!"
>
> Amir Karger
> Curagen Corporation
