tiramisu/tiramisu/storage/dictionary/storage.py

62 lines
1.9 KiB
Python

# -*- coding: utf-8 -*-
# Copyright (C) 2013 Team tiramisu (see AUTHORS for all contributors)
#
# This program 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 2 of the License, or
# (at your option) any later version.
#
# This program 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 this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
# ____________________________________________________________
from tiramisu.i18n import _
from tiramisu.error import ConfigError
from ..util import SerializeObject
class Setting(SerializeObject):
"""Dictionary storage has no particular setting.
"""
pass
setting = Setting()
_list_sessions = []
def list_sessions():
return _list_sessions
def delete_session(session_id):
raise ConfigError(_('dictionary storage cannot delete session'))
class Storage(object):
__slots__ = ('session_id', 'persistent')
storage = 'dictionary'
#if object could be serializable
serializable = True
def __init__(self, session_id, persistent, test=False):
if not test and session_id in _list_sessions:
raise ValueError(_('session already used'))
if persistent:
raise ValueError(_('a dictionary cannot be persistent'))
self.session_id = session_id
self.persistent = persistent
_list_sessions.append(self.session_id)
def __del__(self):
try:
_list_sessions.remove(self.session_id)
except AttributeError:
pass