Re: extending Mail::Box with the manager?

* Anthony D. Urso ([email protected]) [040107 17:17]:
> On Wed, Jan 07, 2004 at 04:30:34PM +0100, Mark Overmeer wrote:
> > > access to mailbox specific methods like loadHead and writeMessages?
> > The methods you mention are all over the place, so it is a bit
> > hard to understand what you would like to do exactly.
> 
> I'm extending Mail::Box to add some trivial convenience methods, like
> one that returns the number of new messages so I don't have to do the
> grep { not $_->label('seen') } $folder->messages in other packages.

  $folder->messages('ACTIVE');
  $folder->messages('DELETED');
  $folder->messages('spam');
  $folder->messages('!flagged');

> Also, I setup a companion to the Mail::Message labels() such that it
> only returns ones that are set for that message.

why?  (if there is a common need for such functionality, then please
supply a patch)

> The caveat is that I'd rather not know what kind of mailbox is actually
> there behind the scenes, so extending Mail::Box::Maildir or whichever would
> be counterproductive.

True.  Therefore, you contribute it to the whole packages.  For instance,
a lot can be added to the autoloaded helper packages for Mail::Message,
like Mail::Message::Construct::...

Or you could write in your own code:
  package Mail::Message;
  sub added_functionality()....
Which is considered a bit dirty, but works fine.

> This is exactly what I was looking for, thanks.  Is there a corresponding
> mailbox_type? 

simply   $mgr->open(type => 'mh');
or, what you are maybe looking for:

  $mgr->registerType(mbox => 'my::own::implementation')

> This was a terrible example, I was just hoping to use a simple one that
> was relevent to the writeMessages error, but I don't actually override
> $folder->write.

Ok... you probably want to extend Mail::Box::Maildir, not Mail::Box, because
otherwise you have to reimplement writeMessages().  Do I understand your
problem correctly now?
-- 
               MarkOv

------------------------------------------------------------------------
drs Mark A.C.J. Overmeer                                MARKOV Solutions
       [email protected]                          [email protected]
http://Mark.Overmeer.net                   http://solutions.overmeer.net