if isinstance(id_, int) and id_ < 1:
msg = f'illegal {self.__class__.__name__} ID, must be >=1: {id_}'
raise HandledException(msg)
+ if isinstance(id_, str) and "" == id_:
+ msg = f'illegal {self.__class__.__name__} ID, must be non-empty'
+ raise HandledException(msg)
self.id_ = id_
+ def __hash__(self) -> int:
+ hashable = [self.id_] + [getattr(self, name) for name in self.to_save]
+ for definition in self.to_save_relations:
+ attr = getattr(self, definition[2])
+ hashable += [tuple(rel.id_ for rel in attr)]
+ for name in self.to_save_versioned:
+ hashable += [hash(getattr(self, name))]
+ return hash(tuple(hashable))
+
def __eq__(self, other: object) -> bool:
if not isinstance(other, self.__class__):
return False
- to_hash_me = tuple([self.id_] +
- [getattr(self, name) for name in self.to_save])
- to_hash_other = tuple([other.id_] +
- [getattr(other, name) for name in other.to_save])
- return hash(to_hash_me) == hash(to_hash_other)
+ return hash(self) == hash(other)
def __lt__(self, other: Any) -> bool:
if not isinstance(other, self.__class__):