56 lines
1.3 KiB
Python
56 lines
1.3 KiB
Python
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# dialects/__init__.py
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# Copyright (C) 2005-2018 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: http://www.opensource.org/licenses/mit-license.php
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__all__ = (
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'firebird',
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'mssql',
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'mysql',
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'oracle',
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'postgresql',
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'sqlite',
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'sybase',
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)
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from .. import util
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_translates = {'postgres': 'postgresql'}
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def _auto_fn(name):
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"""default dialect importer.
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plugs into the :class:`.PluginLoader`
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as a first-hit system.
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"""
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if "." in name:
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dialect, driver = name.split(".")
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else:
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dialect = name
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driver = "base"
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if dialect in _translates:
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translated = _translates[dialect]
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util.warn_deprecated(
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"The '%s' dialect name has been "
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"renamed to '%s'" % (dialect, translated)
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)
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dialect = translated
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try:
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module = __import__('sqlalchemy.dialects.%s' % (dialect, )).dialects
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except ImportError:
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return None
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module = getattr(module, dialect)
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if hasattr(module, driver):
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module = getattr(module, driver)
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return lambda: module.dialect
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else:
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return None
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registry = util.PluginLoader("sqlalchemy.dialects", auto_fn=_auto_fn)
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plugins = util.PluginLoader("sqlalchemy.plugins")
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