Method: ActiveFacts::API::ObjectType#all_role

Defined in:
lib/activefacts/api/object_type.rb

#all_role(role_name = nil) ⇒ Object

Each ObjectType maintains a list of the Roles it plays:



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# File 'lib/activefacts/api/object_type.rb', line 23

def all_role(role_name = nil)
  unless instance_variable_defined?(@@all_role_name ||= "@all_role")  # Avoid "instance variable not defined" warning from ||=
    @all_role = RoleCollection.new
  end
  case role_name
  when nil
    @all_role
  when Symbol, String
    # Search this class then all supertypes:
    unless role = @all_role[role_name.to_sym]
      role = nil
      supertypes.each do |supertype|
          begin
            role = supertype.all_role(role_name)
          rescue RoleNotDefinedException
            next
          end
          break
        end
    end
    unless role
      raise RoleNotDefinedException.new(self, role_name)
    end
    role
  else
    nil
  end
end