#!/usr/bin/python2.5

#

# Copyright 2008 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.

"""This module contains the Author Model."""

__authors__ = [

  '"Todd Larsen" <tlarsen@google.com>',

  '"Sverre Rabbelier" <sverre@rabbelier.nl>',

]

from google.appengine.ext import db

from soc import models

import soc.models.person

class Author(db.Model):

  """Author details for a specific Program.

  An Author entity participates in the following relationships implemented 

  as a db.ReferenceProperty elsewhere in another db.Model:

   works)  a many:many relationship with Works, stored in a separate

     WorksAuthors model.  See the WorksAuthors model class for details.

   contributor)  a 1:1 relationship associating a Contributor with generic

     Author details and capabilities.  This relation is implemented as the

     'contributor' back-reference Query of the Contributor model 'author'

     reference.

   reviewer)  a 1:1 relationship associating a Reviewer with generic

     Author details and capabilities.  This relation is implemented as the

     'reviewer' back-reference Query of the Reviewer model 'author' reference.

   admin)  a 1:1 relationship associating an Administrator with generic

     Author details and capabilities.  This relation is implemented as the

     'admin' back-reference Query of the Administrator model 'author'

     reference.

  """

  #: A required 1:1 relationship associating generic Person details

  #: with the Author role entity.

  person = db.ReferenceProperty(reference_class=models.person.Person, 

		  		required=True, collection_name="author")