64 lines
2.1 KiB
Python
64 lines
2.1 KiB
Python
# GNU MediaGoblin -- federated, autonomous media hosting
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# Copyright (C) 2011, 2012 MediaGoblin contributors. See AUTHORS.
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Affero General Public License for more details.
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#
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# You should have received a copy of the GNU Affero General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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from sqlalchemy.types import TypeDecorator, Unicode, TEXT
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import json
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class PathTupleWithSlashes(TypeDecorator):
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"Represents a Tuple of strings as a slash separated string."
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impl = Unicode
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def process_bind_param(self, value, dialect):
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if value is not None:
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if len(value) == 0:
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value = None
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else:
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value = '/'.join(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 = tuple(value.split('/'))
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return value
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# The following class and only this one class is in very
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# large parts based on example code from sqlalchemy.
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#
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# The original copyright notice and license follows:
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# Copyright (C) 2005-2011 the SQLAlchemy authors and contributors <see AUTHORS file>
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#
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# This module is part of SQLAlchemy and is released under
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# the MIT License: http://www.opensource.org/licenses/mit-license.php
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#
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class JSONEncoded(TypeDecorator):
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"Represents an immutable structure as a json-encoded string."
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impl = 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 = json.dumps(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 = json.loads(value)
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return value
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