MatrixSynapse/synapse/storage/engines/sqlite3.py

# -*- coding: utf-8 -*-
# Copyright 2015 OpenMarket Ltd
#
# 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 synapse.storage._schema_prepare import (
    prepare_database, prepare_sqlite3_database
)


class Sqlite3Engine(object):
    single_threaded = True

    def __init__(self, database_module):
        self.module = database_module

    def check_database(self, txn):
        pass

    def convert_param_style(self, sql):
        return sql

    def on_new_connection(self, db_conn):
        self.prepare_database(db_conn)

    def prepare_database(self, db_conn):
        prepare_sqlite3_database(db_conn)
        prepare_database(db_conn, self)

    def is_deadlock(self, error):
        return False

    def is_connection_closed(self, conn):
        return False

    def lock_table(self, txn, table):
        return