# Copyright 2023 Google LLC
#
# 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
#
#     https://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.
"""Defines mechanism for executing queries via SqlAlchemy."""
from __future__ import annotations

import warnings

import sqlalchemy
from gaarf import executors


class SqlAlchemyQueryExecutor:
    """Deprecated class for creating SqlAlchemyQueryExecutor."""

    def __new__(
        cls, engine: sqlalchemy.engine.base.Engine
    ) -> executors.sql_executor.SqlAlchemyQueryExecutor:
        warnings.warn(
            'Loading SqlAlchemyQueryExecutor from `gaarf.sql_executor` is '
            'deprecated; Import SqlAlchemyQueryExecutor from '
            '`gaarf.executors.sql_executor` instead',
            category=DeprecationWarning,
            stacklevel=2)
        return executors.sql_executor.SqlAlchemyQueryExecutor(engine)
