def _load_members(self):
        for item_data in self.data.members:
            # Fetch the functional filter class based
            # based on data class.
            cls = filter.CLASS_MAP.get(item_data.__class__)
            if cls is None:
                self.log.error("Filter class class not found for data: %s",
                                item_data)
            else:
                self._members.append(cls(self.db, item_data))