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64 lines
1.7 KiB
64 lines
1.7 KiB
1 year ago
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# testing/engines.py
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# Copyright (C) 2005-2023 the SQLAlchemy authors and contributors
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# <see AUTHORS file>
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#
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# This module is part of SQLAlchemy and is released under
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# the MIT License: https://www.opensource.org/licenses/mit-license.php
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# mypy: ignore-errors
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r"""
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.. dialect:: postgresql+psycopg2cffi
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:name: psycopg2cffi
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:dbapi: psycopg2cffi
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:connectstring: postgresql+psycopg2cffi://user:password@host:port/dbname[?key=value&key=value...]
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:url: https://pypi.org/project/psycopg2cffi/
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``psycopg2cffi`` is an adaptation of ``psycopg2``, using CFFI for the C
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layer. This makes it suitable for use in e.g. PyPy. Documentation
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is as per ``psycopg2``.
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.. versionadded:: 1.0.0
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.. seealso::
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:mod:`sqlalchemy.dialects.postgresql.psycopg2`
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""" # noqa
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from .psycopg2 import PGDialect_psycopg2
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from ... import util
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class PGDialect_psycopg2cffi(PGDialect_psycopg2):
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driver = "psycopg2cffi"
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supports_unicode_statements = True
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supports_statement_cache = True
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# psycopg2cffi's first release is 2.5.0, but reports
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# __version__ as 2.4.4. Subsequent releases seem to have
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# fixed this.
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FEATURE_VERSION_MAP = dict(
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native_json=(2, 4, 4),
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native_jsonb=(2, 7, 1),
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sane_multi_rowcount=(2, 4, 4),
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array_oid=(2, 4, 4),
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hstore_adapter=(2, 4, 4),
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)
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@classmethod
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def import_dbapi(cls):
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return __import__("psycopg2cffi")
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@util.memoized_property
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def _psycopg2_extensions(cls):
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root = __import__("psycopg2cffi", fromlist=["extensions"])
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return root.extensions
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@util.memoized_property
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def _psycopg2_extras(cls):
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root = __import__("psycopg2cffi", fromlist=["extras"])
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return root.extras
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dialect = PGDialect_psycopg2cffi
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