invenio_2013_03_18_wapCACHE_object_value_longblob.py
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invenio_2013_03_18_wapCACHE_object_value_longblob.py
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			# -- coding: utf-8 --
			##
			## This file is part of Invenio.
			## Copyright (C) 2013 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.

			import warnings
			from invenio.dbquery import run_sql
			from invenio.textutils import wait_for_user

			depends_on = ['invenio_release_1_1_0']

			def info():
			return "Increase of wapCACHE.object_value storage to longblob"

			def do_upgrade():
			object_value_type = run_sql("SHOW COLUMNS FROM `wapCACHE` LIKE 'object_value'")[0][1]
			if object_value_type not in ['longblob', 'LONGBLOB']:
			run_sql("ALTER TABLE wapCACHE CHANGE object_value object_value longblob")

			def estimate():
			count_rows = run_sql("SELECT COUNT(*) FROM wapCACHE")[0][0]
			return count_rows / 20