#!/usr/bin/python2.5

#

# Copyright 2009 the Melange authors.

#

# Licensed under the Apache License, Version 2.0 (the "License");

# you may not use this file except in compliance with the License.

# You may obtain a copy of the License at

#

#   http://www.apache.org/licenses/LICENSE-2.0

#

# Unless required by applicable law or agreed to in writing, software

# distributed under the License is distributed on an "AS IS" BASIS,

# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

# See the License for the specific language governing permissions and

# limitations under the License.

"""GHOPTaskSubscription (Model) query functions.

"""

__authors__ = [

    '"Madhusudan.C.S" <madhusudancs@gmail.com>'

  ]

from soc.logic.models import base

import soc.models.base

import soc.modules.ghop.models.task_subscription

class Logic(base.Logic):

  """Logic methods for the GHOPTaskSubsciption model.

  """

  def __init__(

      self,

      model=soc.modules.ghop.models.task_subscription.GHOPTaskSubscription,

      base_model=soc.models.base.ModelWithFieldAttributes, id_based=True):

    """Defines the name, key_name and model for this entity.

    """

    super(Logic, self).__init__(model, base_model=base_model,

                                id_based=id_based)

  def getOrCreateTaskSubscriptionForTask(self, task_entity):

    """Gets or creates a TaskSubscription entity for the given GHOPTask.

    Args:

      task_entity: GHOPTask entity

    Returns:

      Existing TaskSubscription entity iff any exists, otherwise a new

      TaskSubscription entity.

    """

    fields = {'task': task_entity}

    task_subscription = self.getForFields(fields, unique=True)

    if not task_subscription:

      task_subscription = self.updateOrCreateFromFields(fields)

    return task_subscription

logic = Logic()