64 lines
1.9 KiB
Python
64 lines
1.9 KiB
Python
#
|
|
# Licensed under the Apache License, Version 2.0 (the "License"); you may
|
|
# not use this file except in compliance with the License. You may obtain
|
|
# a copy of the License at
|
|
#
|
|
# http://www.apache.org/licenses/LICENSE-2.0
|
|
#
|
|
# Unless required by applicable law or agreed to in writing, software
|
|
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
|
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
|
# License for the specific language governing permissions and limitations
|
|
# under the License.
|
|
#
|
|
# The MIT License
|
|
#
|
|
# ext/mutable.py
|
|
# Copyright (C) 2005-2013 the SQLAlchemy authors
|
|
# and contributors <see AUTHORS file>
|
|
#
|
|
# This module is part of SQLAlchemy and is released under
|
|
# the MIT License: http://www.opensource.org/lic enses/mit-license.php
|
|
"""
|
|
Submitted on behalf of a third-party: sqlalchemy
|
|
"""
|
|
from sqlalchemy.ext.mutable import Mutable
|
|
|
|
|
|
class MutableDict(Mutable, dict):
|
|
"""A dictionary type that implements :class:`.Mutable`.
|
|
|
|
.. versionadded:: 0.8
|
|
|
|
"""
|
|
|
|
def __setitem__(self, key, value):
|
|
"""Detect dictionary set events and emit change events."""
|
|
dict.__setitem__(self, key, value)
|
|
self.changed()
|
|
|
|
def __delitem__(self, key):
|
|
"""Detect dictionary del events and emit change events."""
|
|
dict.__delitem__(self, key)
|
|
self.changed()
|
|
|
|
def clear(self):
|
|
dict.clear(self)
|
|
self.changed()
|
|
|
|
@classmethod
|
|
def coerce(cls, key, value):
|
|
"""Convert plain dictionary to MutableDict."""
|
|
if not isinstance(value, MutableDict):
|
|
if isinstance(value, dict):
|
|
return MutableDict(value)
|
|
return Mutable.coerce(key, value)
|
|
else:
|
|
return value
|
|
|
|
def __getstate__(self):
|
|
return dict(self)
|
|
|
|
def __setstate__(self, state):
|
|
self.update(state)
|