102 lines
2.6 KiB
Python
102 lines
2.6 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.
|
|
|
|
from oslo_serialization import jsonutils
|
|
from sqlalchemy.dialects import mysql
|
|
from sqlalchemy.ext import mutable
|
|
from sqlalchemy import types
|
|
|
|
|
|
dumps = jsonutils.dumps
|
|
loads = jsonutils.loads
|
|
|
|
|
|
class LongText(types.TypeDecorator):
|
|
impl = types.Text
|
|
|
|
def load_dialect_impl(self, dialect):
|
|
if dialect.name == 'mysql':
|
|
return dialect.type_descriptor(mysql.LONGTEXT())
|
|
else:
|
|
return self.impl
|
|
|
|
|
|
class Json(LongText):
|
|
|
|
def process_bind_param(self, value, dialect):
|
|
return dumps(value)
|
|
|
|
def process_result_value(self, value, dialect):
|
|
if value is None:
|
|
return None
|
|
return loads(value)
|
|
|
|
|
|
class MutableList(mutable.Mutable, list):
|
|
@classmethod
|
|
def coerce(cls, key, value):
|
|
if not isinstance(value, cls):
|
|
if isinstance(value, list):
|
|
return cls(value)
|
|
return mutable.Mutable.coerce(key, value)
|
|
else:
|
|
return value
|
|
|
|
def __delitem__(self, key):
|
|
list.__delitem__(self, key)
|
|
self.changed()
|
|
|
|
def __setitem__(self, key, value):
|
|
list.__setitem__(self, key, value)
|
|
self.changed()
|
|
|
|
def __getstate__(self):
|
|
return list(self)
|
|
|
|
def __setstate__(self, state):
|
|
len = list.__len__(self)
|
|
list.__delslice__(self, 0, len)
|
|
list.__add__(self, state)
|
|
self.changed()
|
|
|
|
def append(self, value):
|
|
list.append(self, value)
|
|
self.changed()
|
|
|
|
def remove(self, value):
|
|
list.remove(self, value)
|
|
self.changed()
|
|
|
|
|
|
class List(types.TypeDecorator):
|
|
impl = types.Text
|
|
|
|
def load_dialect_impl(self, dialect):
|
|
if dialect.name == 'mysql':
|
|
return dialect.type_descriptor(mysql.LONGTEXT())
|
|
else:
|
|
return self.impl
|
|
|
|
def process_bind_param(self, value, dialect):
|
|
return dumps(value)
|
|
|
|
def process_result_value(self, value, dialect):
|
|
if value is None:
|
|
return None
|
|
return loads(value)
|
|
|
|
|
|
MutableList.associate_with(List)
|
|
mutable.MutableDict.associate_with(LongText)
|
|
mutable.MutableDict.associate_with(Json)
|