module ActiveFedora::Inheritance::ClassMethods

Public Instance Methods

abstract_class?() click to toggle source

Abstract classes can’t have default scopes.

# File lib/active_fedora/inheritance.rb, line 27
def abstract_class?
  self == Base
end
base_class() click to toggle source

Returns the class descending directly from ActiveFedora::Base, or an abstract class, if any, in the inheritance hierarchy.

If A extends ActiveFedora::Base, A.base_class will return A. If B descends from A through some arbitrarily deep hierarchy, B.base_class will return A.

If B < A and C < B and if A is an abstract_class then both B.base_class and C.base_class would return B as the answer since A is an abstract_class.

# File lib/active_fedora/inheritance.rb, line 14
def base_class
  return File if self <= File

  raise ActiveFedoraError, "#{name} doesn't belong in a hierarchy descending from ActiveFedora" unless self <= Base

  if self == Base || superclass == Base || superclass.abstract_class?
    self
  else
    superclass.base_class
  end
end