"""Database management."""
from os.path import isfile
from difflib import Differ
-from sqlite3 import connect as sql_connect, Cursor
+from sqlite3 import connect as sql_connect, Cursor, Row
from typing import Any, Dict
from plomtask.exceptions import HandledException
table_name = ''
to_save: list[str] = []
id_: None | int | str
+ id_type: type[Any] = int
+
+ @classmethod
+ def from_table_row(cls, db_conn: DatabaseConnection, row: Row) -> Any:
+ """Make from DB row, write to DB cache."""
+ obj = cls(*row)
+ assert isinstance(obj.id_, cls.id_type)
+ cache = getattr(db_conn, f'cached_{cls.table_name}')
+ cache[obj.id_] = obj
+ return obj
def set_int_id(self, id_: int | None) -> None:
"""Set id_ if >= 1 or None, else fail."""