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Contents
module ActiveFedora
module Inheritance
extend ActiveSupport::Concern
module ClassMethods
# 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.
def base_class
return File if self <= File
unless self <= Base
raise ActiveFedoraError, "#{name} doesn't belong in a hierarchy descending from ActiveFedora"
end
if self == Base || superclass == Base || superclass.abstract_class?
self
else
superclass.base_class
end
end
# Abstract classes can't have default scopes.
def abstract_class?
self == Base
end
end
end
end
Version data entries
35 entries across 35 versions & 1 rubygems