[entity] ensure the .related(entities=False) parameter is honored all the way down (closes #2755994)
As of today, such a call will always fill the relation cache by
calling .entities() on every single related rset entry.
As a consequence, the `limit` parameter handling also had to be fixed.
It was bogus in the following ways:
* not used in the related_rql, hence potentially huge database
requests, but also actually
* foolishly used in the .entities()-calling cache routine we now
bypass (this changeset ticket's main topic)
Now:
* we set a limit on the rql expression, and
* forbid caching if given a non-None limit (as we don't want to make
the cache handling code more complicated than it is already)
With this, entity.unrelated gets a better limit implementation (so the
code in related/unrelated is nice and symmetric)
Risk:
* _cw_relation_cache disappears completely, which is good, but this is
Python, so you never know ...
# copyright 2003-2012 LOGILAB S.A. (Paris, FRANCE), all rights reserved.
# contact http://www.logilab.fr/ -- mailto:contact@logilab.fr
#
# This file is part of CubicWeb.
#
# CubicWeb is free software: you can redistribute it and/or modify it under the
# terms of the GNU Lesser General Public License as published by the Free
# Software Foundation, either version 2.1 of the License, or (at your option)
# any later version.
#
# CubicWeb 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 Lesser General Public License for more
# details.
#
# You should have received a copy of the GNU Lesser General Public License along
# with CubicWeb. If not, see <http://www.gnu.org/licenses/>.
from cubicweb.devtools.testlib import CubicWebTC
class InternalSessionTC(CubicWebTC):
def test_dbapi_query(self):
session = self.repo.internal_session()
self.assertFalse(session.running_dbapi_query)
session.close()
class SessionTC(CubicWebTC):
def test_hooks_control(self):
session = self.session
self.assertEqual(session.hooks_mode, session.HOOKS_ALLOW_ALL)
self.assertEqual(session.disabled_hook_categories, set())
self.assertEqual(session.enabled_hook_categories, set())
self.assertEqual(len(session._tx_data), 1)
with session.deny_all_hooks_but('metadata'):
self.assertEqual(session.hooks_mode, session.HOOKS_DENY_ALL)
self.assertEqual(session.disabled_hook_categories, set())
self.assertEqual(session.enabled_hook_categories, set(('metadata',)))
session.commit()
self.assertEqual(session.hooks_mode, session.HOOKS_DENY_ALL)
self.assertEqual(session.disabled_hook_categories, set())
self.assertEqual(session.enabled_hook_categories, set(('metadata',)))
session.rollback()
self.assertEqual(session.hooks_mode, session.HOOKS_DENY_ALL)
self.assertEqual(session.disabled_hook_categories, set())
self.assertEqual(session.enabled_hook_categories, set(('metadata',)))
with session.allow_all_hooks_but('integrity'):
self.assertEqual(session.hooks_mode, session.HOOKS_ALLOW_ALL)
self.assertEqual(session.disabled_hook_categories, set(('integrity',)))
self.assertEqual(session.enabled_hook_categories, set(('metadata',))) # not changed in such case
self.assertEqual(session.hooks_mode, session.HOOKS_DENY_ALL)
self.assertEqual(session.disabled_hook_categories, set())
self.assertEqual(session.enabled_hook_categories, set(('metadata',)))
# leaving context manager with no transaction running should reset the
# transaction local storage (and associated cnxset)
self.assertEqual(session._tx_data, {})
self.assertEqual(session.cnxset, None)
self.assertEqual(session.hooks_mode, session.HOOKS_ALLOW_ALL)
self.assertEqual(session.disabled_hook_categories, set())
self.assertEqual(session.enabled_hook_categories, set())
if __name__ == '__main__':
from logilab.common.testlib import unittest_main
unittest_main()