On 5/23/06, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote:
On May 23, 2006, at 3:52 PM, John Siracusa wrote:
The benefits of having a Manager for a ::Cached class are dubious.
Unless you
plan to save() (or remember() or forget()) some of the objects returned by
the Manager, it doesn't really matter whether the Manager's object_class is
::Cached or not.
well in this case I want want to preload an entire table using cached - as
you suggested
its my naive understanding that in order to load everything ( ie, no
primary key ) i need to use a manager
since i need to load via a manager and save cached, it seems like a need a
cached version of manager
Yeah, that's one way to do it. But remember that
make_manager_methods() takes an object_class parameter, so you can
also use just one Manager class and then make two sets of methods:
cached and non-cached.
# Make regular manager methods
PDQ::Product::Manager->make_manager_methods(
base_name => 'products',
object_class => 'PDQ::Product');
# Make cached manager methods
PDQ::Product::Manager->make_manager_methods(
base_name => 'cached_products',
object_class => 'PDQ::Product::Cached');
...
$products = PDQ::Product::Manager->get_cached_products();
foreach my $p (@$products) { $p->remember }
In fact, most of the Rose::DB::Object::Manager methods take an
object_class parameter. All make_manager_methods() really does is
make wrappers for those methods with hard-coded object_class values.
So yet anther way to do this is to call get_objects() directly and
pass an object_class parameter.
$products =
PDQ::Product::Manager->get_objects(
db => PDQ::DB->new(...),
object_class => 'PDQ::Product::Cached');
Many ways to skin this cat, as usual... :)
-John
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