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−#!/usr/bin/python2.5
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−#
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−# Copyright 2008 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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−
+
−"""Presence (Model) query functions.
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−"""
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−
+
−__authors__ = [
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−  '"Sverre Rabbelier" <sverre@rabbelier.nl>',
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−  '"Lennard de Rijk" <ljvderijk@gmail.com>'
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−  ]
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−
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−
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−from google.appengine.ext import db
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−
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−from soc.logic.models import base
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−from soc.logic.models import linkable as linkable_logic
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−
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−import soc.models.presence
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−
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−
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−class Logic(base.Logic):
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−  """Logic methods for the Presence model.
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−  """
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−
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−  def __init__(self, model=soc.models.presence.Presence,
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−               base_model=None, scope_logic=linkable_logic):
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−    """Defines the name, key_name and model for this entity.
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−    """
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−
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−    super(Logic, self).__init__(model, base_model=base_model,
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−                                scope_logic=scope_logic)
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−
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−  def getToS(self, entity):
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−    """Returns the ToS Document of the Presence entity, or None if no ToS.
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−
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−    Args:
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−      entity:  Presence (or one of its sub-classes) entity that may or may
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−        not have a ToS Document attached
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−    """
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−    if not entity:
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−      return None
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−
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−    try:
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−      tos_doc = entity.tos
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−    except db.Error:
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−      return None
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−
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−    return tos_doc
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−
+
−
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−logic = Logic()