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- # Copyright 2020 The Matrix.org Foundation C.I.C.
- #
- # Licensed under the Apache License, Version 2.0 (the "License");
- # you may not use this file except in compliance with the License.
- # You may obtain a copy of the License at
- #
- # http://www.apache.org/licenses/LICENSE-2.0
- #
- # Unless required by applicable law or agreed to in writing, software
- # distributed under the License is distributed on an "AS IS" BASIS,
- # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- # See the License for the specific language governing permissions and
- # limitations under the License.
- from typing import Any, Iterator, List, Mapping, Optional, Sequence, Tuple, Union
- from typing_extensions import Protocol
- """
- Some very basic protocol definitions for the DB-API2 classes specified in PEP-249
- """
- _Parameters = Union[Sequence[Any], Mapping[str, Any]]
- class Cursor(Protocol):
- def execute(self, sql: str, parameters: _Parameters = ...) -> Any:
- ...
- def executemany(self, sql: str, parameters: Sequence[_Parameters]) -> Any:
- ...
- def fetchone(self) -> Optional[Tuple]:
- ...
- def fetchmany(self, size: Optional[int] = ...) -> List[Tuple]:
- ...
- def fetchall(self) -> List[Tuple]:
- ...
- @property
- def description(
- self,
- ) -> Optional[
- Sequence[
- # Note that this is an approximate typing based on sqlite3 and other
- # drivers, and may not be entirely accurate.
- Tuple[
- str,
- Optional[Any],
- Optional[int],
- Optional[int],
- Optional[int],
- Optional[int],
- Optional[int],
- ]
- ]
- ]:
- ...
- @property
- def rowcount(self) -> int:
- return 0
- def __iter__(self) -> Iterator[Tuple]:
- ...
- def close(self) -> None:
- ...
- class Connection(Protocol):
- def cursor(self) -> Cursor:
- ...
- def close(self) -> None:
- ...
- def commit(self) -> None:
- ...
- def rollback(self) -> None:
- ...
- def __enter__(self) -> "Connection":
- ...
- def __exit__(self, exc_type, exc_value, traceback) -> Optional[bool]:
- ...
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