except (noObject, IndexError):

				except (noObject, IndexError):

					self._udm_obj = None

					self._udm_obj = None

				else:

				else:

			self._udm_obj_searched = True

			self._udm_obj_searched = True

		return self._udm_obj

		return self._udm_obj

		logger.debug('Getting all %s of %s with filter %r', cls.__name__, school, complete_filter)

		logger.debug('Getting all %s of %s with filter %r', cls.__name__, school, complete_filter)

		ret = []

		ret = []

		for udm_obj in cls.lookup(lo, school, complete_filter, superordinate=superordinate):

		for udm_obj in cls.lookup(lo, school, complete_filter, superordinate=superordinate):

			try:

			try:

				ret.append(cls.from_udm_obj(udm_obj, school, lo))

				ret.append(cls.from_udm_obj(udm_obj, school, lo))

			except NoObject:

			except NoObject:

				# while Group must be converted into ComputerRoom, etc. and User must be converted into Student, etc.

				# while Group must be converted into ComputerRoom, etc. and User must be converted into Student, etc.

				raise WrongModel(udm_obj.dn, klass, cls)

				raise WrongModel(udm_obj.dn, klass, cls)

			return klass.from_udm_obj(udm_obj, school, lo)

			return klass.from_udm_obj(udm_obj, school, lo)

		attrs = {'school': cls.get_school_from_dn(udm_obj.dn) or school}  # TODO: is this adjustment okay?

		attrs = {'school': cls.get_school_from_dn(udm_obj.dn) or school}  # TODO: is this adjustment okay?

		if cls.supports_schools():

		if cls.supports_schools():

			attrs['schools'] = udm_obj['school']

			attrs['schools'] = udm_obj['school']

		if len(objs) > 1:

		if len(objs) > 1:

			raise MultipleObjectsError(objs)

			raise MultipleObjectsError(objs)

		obj = objs[0]

		obj = objs[0]

		return obj

		return obj

	@classmethod

	@classmethod