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#!/usr/bin/python2.5
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#
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# Copyright 2009 the Melange authors.
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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 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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"""This module contains the RankerRoot model
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"""
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__authors__ = [
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'"Lennard de Rijk" <ljvderijk@gmail.com>',
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]
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from google.appengine.ext import db
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import soc.models.linkable
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class RankerRoot(soc.models.linkable.Linkable):
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"""Links the Root of a RankList tree to an owner and also gives it an unique ID.
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"""
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#: A required reference property to the root of the RankList tree
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root = db.ReferenceProperty(required=True,
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collection_name='roots')
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