Module: ActiveFedora::Inheritance::ClassMethods

Defined in:
lib/active_fedora/inheritance.rb

Instance Method Summary collapse

Instance Method Details

#abstract_class? ⇒ Boolean

Abstract classes can’t have default scopes.

Returns:

  • (Boolean) 


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# File 'lib/active_fedora/inheritance.rb', line 27

def abstract_class?
  self == Base
end

#base_class ⇒ Object

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.

Raises:



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# 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