From 42ee4530bb6a720d50a8d547a5512b38b7f532a0 Mon Sep 17 00:00:00 2001 From: Kapil Yedidi Date: Mon, 15 Nov 2021 08:08:10 -0800 Subject: [PATCH] Allow passing in off arbitrary sqlite pragmas --- dataset/database.py | 14 ++++++++++---- 1 file changed, 10 insertions(+), 4 deletions(-) diff --git a/dataset/database.py b/dataset/database.py index 22d1a49..42c12f4 100644 --- a/dataset/database.py +++ b/dataset/database.py @@ -30,6 +30,7 @@ class Database(object): ensure_schema=True, row_type=row_type, sqlite_wal_mode=True, + sqlite_pragmas=None, ): """Configure and connect to the database.""" if engine_kwargs is None: @@ -56,16 +57,21 @@ class Database(object): self.engine = create_engine(url, **engine_kwargs) self.is_postgres = self.engine.dialect.name == "postgresql" self.is_sqlite = self.engine.dialect.name == "sqlite" - - def _enable_sqlite_wal_mode(dbapi_con, con_record): + if sqlite_pragmas is None: + sqlite_pragmas = [] + def _run_sqlite_pragmas(dbapi_con, con_record): # reference: # https://stackoverflow.com/questions/9671490/how-to-set-sqlite-pragma-statements-with-sqlalchemy # https://stackoverflow.com/a/7831210/1890086 - dbapi_con.execute("PRAGMA journal_mode=WAL") + for pragma in sqlite_pragmas: + dbapi_con.execute(pragma) if self.is_sqlite and parsed_url.path != "" and sqlite_wal_mode: # we only enable WAL mode for sqlite databases that are not in-memory - event.listen(self.engine, "connect", _enable_sqlite_wal_mode) + sqlite_pragmas.append("PRAGMA journal_mode=WAL") + + if sqlite_pragmas: + event.listen(self.engine, "connect", _run_sqlite_pragmas) self.types = Types(is_postgres=self.is_postgres) self.url = url