[Dbix-class] using load_classes selectively

[Matt S Trout]

On Thu, Feb 07, 2008 at 04:39:05PM +0000, Frazer Irving wrote:
> Hi everybody,
> 
> I'm a first time poster to this list. I hope I have the right place to ask
> this question.
> 
> I am currently in the process of setting up DBIx::Class as the ORM for my
> employer. I have setup the basic structure as so...
> 
> package My::DB;
> use base qw/DBIx::Class::Schema/;
> __Package__->load_classes();
> 
> package My::AbstractClass;
> use base qw(DBIx::Class);
> 
> package My::DB::Foo;
> use base qw(My::AbstractClass);
> ...
> __PACKAGE__->belongs_to(bar => 'My::DB::Bar');
> __PACKAGE__->has_many(baz => 'My::DB::Baz');
> 
> That all works great, but the load_classes method is called for every class
> whenever I 'use My::DB'. I would like the classes to only load when I am
> going to use them. I have experimented with moving the load_classes
> definitions into My::DB::Foo etc, and only specifying the current
> __PACKAGE__ and it's relationships but this results in all relationships for
> My::DB::Foo being loaded when that class is loaded even if they are not
> going to be used.
> 
> Is there some way I can load the relation classes only when a call is made
> to the accessor for that relation? I have looked for an answer in the docs
> and in the googles but to no avail.

Not really. The loading time is fairly low if you either (a) have
Class::C3::XS installed or (b) are on 5.10 (C3 built in)

What business requirement is leading you to want on-demand loading?

-- 
      Matt S Trout       Need help with your Catalyst or DBIx::Class project?
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