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# Copyright (C) 2007-2010 by the Free Software Foundation, Inc.
#
# This file is part of GNU Mailman.
#
# GNU Mailman is free software: you can redistribute it and/or modify it under
# the terms of the GNU General Public License as published by the Free
# Software Foundation, either version 3 of the License, or (at your option)
# any later version.
#
# GNU Mailman is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
# FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
# more details.
#
# You should have received a copy of the GNU General Public License along with
# GNU Mailman. If not, see <http://www.gnu.org/licenses/>.
"""Storm type conversions."""
from __future__ import absolute_import, unicode_literals
__metaclass__ = type
__all__ = [
'Enum',
]
import sys
from storm.properties import SimpleProperty
from storm.variables import Variable
from mailman.utilities.modules import find_name
class _EnumVariable(Variable):
"""Storm variable."""
def parse_set(self, value, from_db):
if value is None:
return None
if not from_db:
return value
path, colon, intvalue = value.rpartition(':')
class_ = find_name(path)
return class_[int(intvalue)]
def parse_get(self, value, to_db):
if value is None:
return None
if not to_db:
return value
return '{0}.{1}:{2}'.format(
value.enumclass.__module__,
value.enumclass.__name__,
int(value))
class Enum(SimpleProperty):
"""Custom Enum type for Storm."""
variable_class = _EnumVariable
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