On May 17, 2007, at 3:12 PM, Michael Reece wrote:
> here is a bit of ugliness that hints at what i am after:
I think i do some similar stuff, so I'll give my advice -- which you
may be better off to not take ;)
I never use 'make manager methods'. i started it as a memory saver
because i use RDBO in 2 systems with 300+ sql tables/classes in each
- it was too too much overhead. instead i use dummy manager classes
and call get_objects directly.
that being said, since I only call get_objects directly , I found
that i could improve some memory use if i didn't use the default RDBO
manager class... instead I inherit off of my own class which wraps
the manager calls
if this makes any sense:
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- - - - - - - - - - - - - - - - - - -
package MyApp::RDBO::Object::Item;
# setup here
1;
package MyApp::RDBO::Object::Item::Manager;
use MyApp::RDBO::Object::_ManagerCustom();
use base qw( MyApp::RDBO::Object::_ManagerCustom );
use MyApp::RDBO::Object::Item ();
sub object_class { 'MyApp::RDBO::Object::Item' }
# often no calls
1;
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then in MyApp::RDBO::Object::_ManagerCustom I do some wonky things:
a) I have a bunch of standardized calls to get_objects, which just
subs in this to the query builder: object_class=> $class->object_class
b) i rewrite get_objects , often in this form:
sub get_objects {
my ( $self , %kw_args )= @_;
# mess with kw_args ( often bless into class that provides indexing
etc )
my $results= Rose::DB::Object::Manager::get_objects ( $self , %
kw_args );
# mess with results ( often bless into class that provides indexing
etc )
return $results;
}
the point of this is as follows:
instead of using helper methods to modify the manger args, just
inherit from a different class and you can stuff anything you want
into the manager args,
then just hijack manager calls via your own subclass, which will call
the real rose manager and return results from it.
this method is slightly slower to run-- there are way more class
lookups , but it cuts down on enough memory that lets me run more
processes ( which gets me an overall better server load, as my
performance blocking is on the DB , not in perl )
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