Linux Certif

Toute la documentation sur la certification Linux LPI

Rose::DB::Object::Std::Cached.3pm

NAME

Rose::DB::Object::Std::Cached - Memory cached standardized object representation of a single row in a database table.

SYNOPSIS

   package Category;
 
   use base 'Rose::DB::Object::Std::Cached';
 
   __PACKAGE__->meta->setup
   (
     table => 'categories',
 
     columns =>
     [
       id          => { type => 'int', primary_key => 1 },
       name        => { type => 'varchar', length => 255 },
       description => { type => 'text' },
     ],
 
     unique_key => 'name',
   );
 
   ...
 
   $cat1 = Category->new(id   => 123,
                         name => 'Art');
 
   $cat1->save or die $category->error;
 
 
   $cat2 = Category->new(id => 123);
 
   # This will load from the memory cache, not the database
   $cat2->load or die $cat2->error; 
 
   # $cat2 is the same object as $cat1
   print "Yep, cached"  if($cat1 eq $cat2);
 
   # No, really, it's the same object
   $cat1->name('Blah');
   print $cat2->name; # prints "Blah"
 
   ...
 
 

DESCRIPTION

"Rose::DB::Object::Std::Cached" is a subclass of both Rose::DB::Object::Std and Rose::DB::Object::Cached. It simply combines the features of both classes. See the Rose::DB::Object::Std and Rose::DB::Object::Cached documentation for more information.

AUTHOR

John C. Siracusa (siracusa@gmail.com)

LICENSE

Copyright (c) 2009 by John C. Siracusa. All rights reserved. This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.