368 lines
13 KiB
Python
368 lines
13 KiB
Python
# Copyright 2015-present MongoDB, Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""Result class definitions.
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.. seealso:: This module is compatible with both the synchronous and asynchronous PyMongo APIs.
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"""
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from __future__ import annotations
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from typing import Any, Mapping, MutableMapping, Optional, cast
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from pymongo.errors import InvalidOperation
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class _WriteResult:
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"""Base class for write result classes."""
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__slots__ = ("__acknowledged",)
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def __init__(self, acknowledged: bool) -> None:
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self.__acknowledged = acknowledged
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def __repr__(self) -> str:
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return f"{self.__class__.__name__}({self.__acknowledged})"
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def _raise_if_unacknowledged(self, property_name: str) -> None:
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"""Raise an exception on property access if unacknowledged."""
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if not self.__acknowledged:
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raise InvalidOperation(
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f"A value for {property_name} is not available when "
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"the write is unacknowledged. Check the "
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"acknowledged attribute to avoid this "
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"error."
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)
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@property
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def acknowledged(self) -> bool:
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"""Is this the result of an acknowledged write operation?
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The :attr:`acknowledged` attribute will be ``False`` when using
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``WriteConcern(w=0)``, otherwise ``True``.
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.. note::
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If the :attr:`acknowledged` attribute is ``False`` all other
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attributes of this class will raise
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:class:`~pymongo.errors.InvalidOperation` when accessed. Values for
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other attributes cannot be determined if the write operation was
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unacknowledged.
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.. seealso::
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:class:`~pymongo.write_concern.WriteConcern`
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"""
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return self.__acknowledged
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class InsertOneResult(_WriteResult):
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"""The return type for :meth:`~pymongo.collection.Collection.insert_one`
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and as part of :meth:`~pymongo.mongo_client.MongoClient.bulk_write`.
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"""
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__slots__ = ("__inserted_id",)
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def __init__(self, inserted_id: Any, acknowledged: bool) -> None:
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self.__inserted_id = inserted_id
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super().__init__(acknowledged)
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def __repr__(self) -> str:
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return (
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f"{self.__class__.__name__}({self.__inserted_id!r}, acknowledged={self.acknowledged})"
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)
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@property
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def inserted_id(self) -> Any:
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"""The inserted document's _id."""
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return self.__inserted_id
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class InsertManyResult(_WriteResult):
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"""The return type for :meth:`~pymongo.collection.Collection.insert_many`."""
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__slots__ = ("__inserted_ids",)
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def __init__(self, inserted_ids: list[Any], acknowledged: bool) -> None:
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self.__inserted_ids = inserted_ids
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super().__init__(acknowledged)
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def __repr__(self) -> str:
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return (
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f"{self.__class__.__name__}({self.__inserted_ids!r}, acknowledged={self.acknowledged})"
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)
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@property
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def inserted_ids(self) -> list[Any]:
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"""A list of _ids of the inserted documents, in the order provided.
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.. note:: If ``False`` is passed for the `ordered` parameter to
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:meth:`~pymongo.collection.Collection.insert_many` the server
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may have inserted the documents in a different order than what
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is presented here.
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"""
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return self.__inserted_ids
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class UpdateResult(_WriteResult):
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"""The return type for :meth:`~pymongo.collection.Collection.update_one`,
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:meth:`~pymongo.collection.Collection.update_many`, and
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:meth:`~pymongo.collection.Collection.replace_one`, and as part of
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:meth:`~pymongo.mongo_client.MongoClient.bulk_write`.
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"""
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__slots__ = (
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"__raw_result",
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"__in_client_bulk",
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)
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def __init__(
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self,
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raw_result: Optional[Mapping[str, Any]],
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acknowledged: bool,
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in_client_bulk: bool = False,
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):
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self.__raw_result = raw_result
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self.__in_client_bulk = in_client_bulk
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super().__init__(acknowledged)
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def __repr__(self) -> str:
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return f"{self.__class__.__name__}({self.__raw_result!r}, acknowledged={self.acknowledged})"
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@property
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def raw_result(self) -> Optional[Mapping[str, Any]]:
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"""The raw result document returned by the server."""
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return self.__raw_result
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@property
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def matched_count(self) -> int:
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"""The number of documents matched for this update."""
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self._raise_if_unacknowledged("matched_count")
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assert self.__raw_result is not None
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if not self.__in_client_bulk and self.upserted_id is not None:
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return 0
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return self.__raw_result.get("n", 0)
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@property
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def modified_count(self) -> int:
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"""The number of documents modified."""
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self._raise_if_unacknowledged("modified_count")
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assert self.__raw_result is not None
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return cast(int, self.__raw_result.get("nModified"))
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@property
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def upserted_id(self) -> Any:
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"""The _id of the inserted document if an upsert took place. Otherwise
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``None``.
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"""
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self._raise_if_unacknowledged("upserted_id")
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assert self.__raw_result is not None
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if self.__in_client_bulk and self.__raw_result.get("upserted"):
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return self.__raw_result["upserted"]["_id"]
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return self.__raw_result.get("upserted", None)
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@property
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def did_upsert(self) -> bool:
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"""Whether an upsert took place.
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.. versionadded:: 4.9
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"""
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assert self.__raw_result is not None
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return "upserted" in self.__raw_result
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class DeleteResult(_WriteResult):
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"""The return type for :meth:`~pymongo.collection.Collection.delete_one`
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and :meth:`~pymongo.collection.Collection.delete_many`
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and as part of :meth:`~pymongo.mongo_client.MongoClient.bulk_write`.
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"""
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__slots__ = ("__raw_result",)
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def __init__(self, raw_result: Mapping[str, Any], acknowledged: bool) -> None:
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self.__raw_result = raw_result
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super().__init__(acknowledged)
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def __repr__(self) -> str:
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return f"{self.__class__.__name__}({self.__raw_result!r}, acknowledged={self.acknowledged})"
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@property
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def raw_result(self) -> Mapping[str, Any]:
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"""The raw result document returned by the server."""
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return self.__raw_result
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@property
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def deleted_count(self) -> int:
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"""The number of documents deleted."""
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self._raise_if_unacknowledged("deleted_count")
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return self.__raw_result.get("n", 0)
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class _BulkWriteResultBase(_WriteResult):
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"""Private base class for bulk write API results."""
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__slots__ = ("__bulk_api_result",)
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def __init__(self, bulk_api_result: dict[str, Any], acknowledged: bool) -> None:
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self.__bulk_api_result = bulk_api_result
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super().__init__(acknowledged)
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def __repr__(self) -> str:
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return f"{self.__class__.__name__}({self.__bulk_api_result!r}, acknowledged={self.acknowledged})"
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@property
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def bulk_api_result(self) -> dict[str, Any]:
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"""The raw bulk write API result."""
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return self.__bulk_api_result
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@property
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def inserted_count(self) -> int:
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"""The number of documents inserted."""
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self._raise_if_unacknowledged("inserted_count")
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return cast(int, self.__bulk_api_result.get("nInserted"))
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@property
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def matched_count(self) -> int:
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"""The number of documents matched for an update."""
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self._raise_if_unacknowledged("matched_count")
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return cast(int, self.__bulk_api_result.get("nMatched"))
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@property
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def modified_count(self) -> int:
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"""The number of documents modified."""
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self._raise_if_unacknowledged("modified_count")
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return cast(int, self.__bulk_api_result.get("nModified"))
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@property
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def deleted_count(self) -> int:
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"""The number of documents deleted."""
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self._raise_if_unacknowledged("deleted_count")
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if "nRemoved" in self.__bulk_api_result:
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return cast(int, self.__bulk_api_result.get("nRemoved"))
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else:
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return cast(int, self.__bulk_api_result.get("nDeleted"))
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@property
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def upserted_count(self) -> int:
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"""The number of documents upserted."""
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self._raise_if_unacknowledged("upserted_count")
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return cast(int, self.__bulk_api_result.get("nUpserted"))
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class BulkWriteResult(_BulkWriteResultBase):
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"""An object wrapper for collection-level bulk write API results."""
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__slots__ = ()
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def __init__(self, bulk_api_result: dict[str, Any], acknowledged: bool) -> None:
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"""Create a BulkWriteResult instance.
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:param bulk_api_result: A result dict from the collection-level bulk write API
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:param acknowledged: Was this write result acknowledged? If ``False``
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then all properties of this object will raise
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:exc:`~pymongo.errors.InvalidOperation`.
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"""
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super().__init__(bulk_api_result, acknowledged)
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def __repr__(self) -> str:
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return (
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f"{self.__class__.__name__}({self.bulk_api_result!r}, acknowledged={self.acknowledged})"
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)
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@property
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def upserted_ids(self) -> Optional[dict[int, Any]]:
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"""A map of operation index to the _id of the upserted document."""
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self._raise_if_unacknowledged("upserted_ids")
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if self.bulk_api_result:
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return {upsert["index"]: upsert["_id"] for upsert in self.bulk_api_result["upserted"]}
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return None
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class ClientBulkWriteResult(_BulkWriteResultBase):
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"""An object wrapper for client-level bulk write API results."""
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__slots__ = ("__has_verbose_results",)
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def __init__(
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self,
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bulk_api_result: MutableMapping[str, Any],
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acknowledged: bool,
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has_verbose_results: bool,
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) -> None:
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"""Create a ClientBulkWriteResult instance.
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:param bulk_api_result: A result dict from the client-level bulk write API
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:param acknowledged: Was this write result acknowledged? If ``False``
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then all properties of this object will raise
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:exc:`~pymongo.errors.InvalidOperation`.
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:param has_verbose_results: Should the returned result be verbose?
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If ``False``, then the ``insert_results``, ``update_results``, and
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``delete_results`` properties of this object will raise
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:exc:`~pymongo.errors.InvalidOperation`.
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"""
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self.__has_verbose_results = has_verbose_results
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super().__init__(
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bulk_api_result, # type: ignore[arg-type]
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acknowledged,
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)
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def __repr__(self) -> str:
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return "{}({!r}, acknowledged={}, verbose={})".format(
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self.__class__.__name__,
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self.bulk_api_result,
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self.acknowledged,
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self.has_verbose_results,
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)
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def _raise_if_not_verbose(self, property_name: str) -> None:
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"""Raise an exception on property access if verbose results are off."""
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if not self.__has_verbose_results:
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raise InvalidOperation(
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f"A value for {property_name} is not available when "
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"the results are not set to be verbose. Check the "
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"verbose_results attribute to avoid this error."
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)
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@property
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def has_verbose_results(self) -> bool:
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"""Whether the returned results should be verbose."""
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return self.__has_verbose_results
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@property
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def insert_results(self) -> Mapping[int, InsertOneResult]:
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"""A map of successful insertion operations to their results."""
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self._raise_if_unacknowledged("insert_results")
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self._raise_if_not_verbose("insert_results")
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return cast(
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Mapping[int, InsertOneResult],
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self.bulk_api_result.get("insertResults"),
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)
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@property
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def update_results(self) -> Mapping[int, UpdateResult]:
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"""A map of successful update operations to their results."""
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self._raise_if_unacknowledged("update_results")
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self._raise_if_not_verbose("update_results")
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return cast(
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Mapping[int, UpdateResult],
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self.bulk_api_result.get("updateResults"),
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)
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@property
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def delete_results(self) -> Mapping[int, DeleteResult]:
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"""A map of successful delete operations to their results."""
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self._raise_if_unacknowledged("delete_results")
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self._raise_if_not_verbose("delete_results")
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return cast(
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Mapping[int, DeleteResult],
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self.bulk_api_result.get("deleteResults"),
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)
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