def sync_get_by_cid(cls,
cid,
read_preference=None,
session=None,
**kwargs):
"""
依据主键_id获取Document
:param cid: 记录主键（cid）
:param read_preference:
:param session:
:param kwargs
:return:
"""
result, clazz = None, cls()
if clazz.__cached:
result = clazz.result_2_obj(CacheEngine.get(cid))
if not result and clazz:
collection = clazz.get_sync_collection(read_preference)
if collection:
result = clazz.result_2_obj(
collection.find_one(clazz.map_filter_2_field({'cid': cid}),
session=session,
**kwargs))
if result and clazz.__cached:
CacheEngine.set(cid, result)
return result
async def get_by_id(cls,
oid,
read_preference=None,
session=None,
**kwargs):
"""
依据主键_id获取Document
:param oid: 记录主键（_id）
:param read_preference
:param session: 会话
:return:
"""
if isinstance(oid, ObjectId):
oid = str(oid)
result, clazz = None, cls()
if clazz.__cached:
result = clazz.result_2_obj(CacheEngine.get(oid))
if not result and clazz:
result = clazz.result_2_obj(
await clazz.get_async_collection(read_preference).find_one(
filter=clazz.map_filter_2_field({'_id': ObjectId(oid)}),
session=session,
**kwargs))
if result and clazz.__cached:
CacheEngine.set(oid, result)
return result