communities_2014_03_07_ranker.py
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	# -- coding: utf-8 --
	##
	## This file is part of Invenio.
	## Copyright (C) 2014 CERN.
	##
	## Invenio is free software; you can redistribute it and/or
	## modify it under the terms of the GNU General Public License as
	## published by the Free Software Foundation; either version 2 of the
	## License, or (at your option) any later version.
	##
	## Invenio is distributed in the hope that it will be useful, but
	## WITHOUT ANY WARRANTY; without even the implied warranty of
	## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	## General Public License for more details.
	##
	## You should have received a copy of the GNU General Public License
	## along with Invenio; if not, write to the Free Software Foundation, Inc.,
	## 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.

	from sqlalchemy import *
	from invenio.ext.sqlalchemy import db
	from invenio.modules.upgrader.api import op

	depends_on = []


	def info():
	return "Add ranker"


	def do_upgrade():
	""" Implement your upgrades here """
	op.add_column(u'community', db.Column('fixed_points',
	db.Integer(display_width=9), nullable=False))
	op.add_column(u'community',
	db.Column('last_record_accepted', db.DateTime(),
	nullable=False))
	op.add_column(u'community',
	db.Column('ranking', db.Integer(display_width=9),
	nullable=False))


	def estimate():
	""" Estimate running time of upgrade in seconds (optional). """
	return 1