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1# testing/engines.py
2# Copyright (C) 2005-2020 the SQLAlchemy authors and contributors
3# <see AUTHORS file>
4#
5# This module is part of SQLAlchemy and is released under
6# the MIT License: http://www.opensource.org/licenses/mit-license.php
7r"""
8.. dialect:: postgresql+psycopg2cffi
9 :name: psycopg2cffi
10 :dbapi: psycopg2cffi
11 :connectstring: postgresql+psycopg2cffi://user:password@host:port/dbname[?key=value&key=value...]
12 :url: http://pypi.python.org/pypi/psycopg2cffi/
14``psycopg2cffi`` is an adaptation of ``psycopg2``, using CFFI for the C
15layer. This makes it suitable for use in e.g. PyPy. Documentation
16is as per ``psycopg2``.
18.. versionadded:: 1.0.0
20.. seealso::
22 :mod:`sqlalchemy.dialects.postgresql.psycopg2`
24""" # noqa
25from .psycopg2 import PGDialect_psycopg2
28class PGDialect_psycopg2cffi(PGDialect_psycopg2):
29 driver = "psycopg2cffi"
30 supports_unicode_statements = True
32 # psycopg2cffi's first release is 2.5.0, but reports
33 # __version__ as 2.4.4. Subsequent releases seem to have
34 # fixed this.
36 FEATURE_VERSION_MAP = dict(
37 native_json=(2, 4, 4),
38 native_jsonb=(2, 7, 1),
39 sane_multi_rowcount=(2, 4, 4),
40 array_oid=(2, 4, 4),
41 hstore_adapter=(2, 4, 4),
42 )
44 @classmethod
45 def dbapi(cls):
46 return __import__("psycopg2cffi")
48 @classmethod
49 def _psycopg2_extensions(cls):
50 root = __import__("psycopg2cffi", fromlist=["extensions"])
51 return root.extensions
53 @classmethod
54 def _psycopg2_extras(cls):
55 root = __import__("psycopg2cffi", fromlist=["extras"])
56 return root.extras
59dialect = PGDialect_psycopg2cffi