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# GNU MediaGoblin -- federated, autonomous media hosting
# Copyright (C) 2011, 2012 MediaGoblin contributors. See AUTHORS.
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 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 Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
"""
This module contains some fake classes and functions to
calm the rest of the code base. Or provide super minimal
implementations.
Currently:
- ObjectId "class": It's a function mostly doing
int(init_arg) to convert string primary keys into
integer primary keys.
- InvalidId exception
- DESCENDING "constant"
"""
DESCENDING = object() # a unique object for this "constant"
class InvalidId(Exception):
pass
def ObjectId(value=None):
if value is None:
return None
try:
return int(value)
except ValueError:
raise InvalidId("%r is an invalid id" % value)
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