# sqlalchemy/pool/__init__.py
# Copyright (C) 2005-2020 the SQLAlchemy authors and contributors
# <see AUTHORS file>
#
# This module is part of SQLAlchemy and is released under
# the MIT License: http://www.opensource.org/licenses/mit-license.php


"""Connection pooling for DB-API connections.

Provides a number of connection pool implementations for a variety of
usage scenarios and thread behavior requirements imposed by the
application, DB-API or database itself.

Also provides a DB-API 2.0 connection proxying mechanism allowing
regular DB-API connect() methods to be transparently managed by a
SQLAlchemy connection pool.
"""

from .base import _ConnectionFairy  # noqa
from .base import _ConnectionRecord  # noqa
from .base import _finalize_fairy  # noqa
from .base import _refs  # noqa
from .base import Pool
from .base import reset_commit
from .base import reset_none
from .base import reset_rollback
from .dbapi_proxy import clear_managers
from .dbapi_proxy import manage
from .impl import AssertionPool
from .impl import NullPool
from .impl import QueuePool
from .impl import SingletonThreadPool
from .impl import StaticPool


__all__ = [
    "Pool",
    "reset_commit",
    "reset_none",
    "reset_rollback",
    "clear_managers",
    "manage",
    "AssertionPool",
    "NullPool",
    "QueuePool",
    "SingletonThreadPool",
    "StaticPool",
]

# as these are likely to be used in various test suites, debugging
# setups, keep them in the sqlalchemy.pool namespace
