mirror of
https://github.com/ankitects/anki.git
synced 2025-09-18 22:12:21 -04:00
81 lines
2 KiB
Python
81 lines
2 KiB
Python
# Copyright: Ankitects Pty Ltd and contributors
|
|
# License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
|
|
|
|
# fixme: lossy utf8 handling
|
|
# fixme: progress
|
|
|
|
from sqlite3 import Cursor
|
|
from sqlite3 import dbapi2 as sqlite
|
|
from typing import Any, Iterable, List
|
|
|
|
|
|
class DBProxy:
|
|
# Lifecycle
|
|
###############
|
|
|
|
def __init__(self, path: str) -> None:
|
|
self._db = sqlite.connect(path, timeout=0)
|
|
self._path = path
|
|
self.mod = False
|
|
|
|
def close(self) -> None:
|
|
self._db.close()
|
|
|
|
# Transactions
|
|
###############
|
|
|
|
def commit(self) -> None:
|
|
self._db.commit()
|
|
|
|
def rollback(self) -> None:
|
|
self._db.rollback()
|
|
|
|
def setAutocommit(self, autocommit: bool) -> None:
|
|
if autocommit:
|
|
self._db.isolation_level = None
|
|
else:
|
|
self._db.isolation_level = ""
|
|
|
|
# Querying
|
|
################
|
|
|
|
def all(self, sql: str, *args) -> List:
|
|
return self.execute(sql, *args).fetchall()
|
|
|
|
def first(self, sql: str, *args) -> Any:
|
|
c = self.execute(sql, *args)
|
|
res = c.fetchone()
|
|
c.close()
|
|
return res
|
|
|
|
def list(self, sql: str, *args) -> List:
|
|
return [x[0] for x in self.execute(sql, *args)]
|
|
|
|
def scalar(self, sql: str, *args) -> Any:
|
|
res = self.execute(sql, *args).fetchone()
|
|
if res:
|
|
return res[0]
|
|
return None
|
|
|
|
# Updates
|
|
################
|
|
|
|
def executemany(self, sql: str, args: Iterable) -> None:
|
|
self.mod = True
|
|
self._db.executemany(sql, args)
|
|
|
|
def executescript(self, sql: str) -> None:
|
|
self.mod = True
|
|
self._db.executescript(sql)
|
|
|
|
# Cursor API
|
|
###############
|
|
|
|
def execute(self, sql: str, *args) -> Cursor:
|
|
s = sql.strip().lower()
|
|
# mark modified?
|
|
for stmt in "insert", "update", "delete":
|
|
if s.startswith(stmt):
|
|
self.mod = True
|
|
res = self._db.execute(sql, args)
|
|
return res
|