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heat/heat/db/sqlalchemy/types.py

59 lines
1.6 KiB

#
# 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 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 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)