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MakeMethods/Utility/Inheritable.pm  view on Meta::CPAN

  
  get_vvalue($dataset, $obj);                   # Objects "inherit"
  set_vvalue($dataset, $obj, 'Foible');         # Until you override
  get_vvalue($dataset, $obj);                   # Now finds "Foible"
  
  get_vvalue($dataset, 'MySubclass');           # Subclass "inherits"
  get_vvalue($dataset, $subobj);                # As do its objects
  set_vvalue($dataset, 'MySubclass', 'Foozle'); # Until we override it
  get_vvalue($dataset, 'MySubclass');           # Now finds "Foozle"
  
  get_vvalue($dataset, $subobj);                # Change cascades down
  set_vvalue($dataset, $subobj, 'Foolish');     # Until we override again
  
  get_vvalue($dataset, 'MyClass');              # Superclass is unchanged

=head1 DESCRIPTION

This module provides several functions which allow you to store values in a hash corresponding to both objects and classes, and to retrieve those values by searching a object's inheritance tree until it finds a matching entry.

This functionality is used by Class::MakeMethods::Standard::Inheritable and Class::MakeMethods::Composite::Inheritable to construct methods that can both store class data and be overriden on a per-object level.