34 lines
1.1 KiB
Python
34 lines
1.1 KiB
Python
# Copyright (c) 2013 Mirantis Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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# implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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from oslo_serialization import jsonutils
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import sqlalchemy as sa
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class JsonEncoded(sa.TypeDecorator):
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"""Represents an immutable structure as a json-encoded string."""
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impl = sa.Text
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def process_bind_param(self, value, dialect):
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if value is not None:
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value = jsonutils.dump_as_bytes(value)
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return value
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def process_result_value(self, value, dialect):
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if value is not None:
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value = jsonutils.loads(value)
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return value
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