app/soc/modules/ghop/logic/models/task_subscription.py
author Lennard de Rijk <ljvderijk@gmail.com>
Fri, 18 Sep 2009 18:53:14 +0200
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Added getOrCreateTaskSubscriptionForTask to TaskSubscription Logic.
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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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"""GHOPTaskSubscription (Model) query functions.
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"""
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__authors__ = [
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    '"Madhusudan.C.S" <madhusudancs@gmail.com>'
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  ]
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from soc.logic.models import base
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import soc.models.base
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import soc.modules.ghop.models.task_subscription
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class Logic(base.Logic):
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  """Logic methods for the GHOPTaskSubsciption model.
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  """
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  def __init__(
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      self,
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      model=soc.modules.ghop.models.task_subscription.GHOPTaskSubscription,
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      base_model=soc.models.base.ModelWithFieldAttributes, id_based=True):
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    """Defines the name, key_name and model for this entity.
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    """
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    super(Logic, self).__init__(model, base_model=base_model,
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                                id_based=id_based)
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  def getOrCreateTaskSubscriptionForTask(self, task_entity):
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    """Gets or creates a TaskSubscription entity for the given GHOPTask.
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    Args:
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      task_entity: GHOPTask entity
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    Returns:
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      Existing TaskSubscription entity iff any exists, otherwise a new
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      TaskSubscription entity.
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    """
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    fields = {'task': task_entity}
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    task_subscription = self.getForFields(fields, unique=True)
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    if not task_subscription:
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      task_subscription = self.updateOrCreateFromFields(fields)
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    return task_subscription
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logic = Logic()