[server] Fixed issue with the adapters cache of a cloned EditedEntity
The adapters' cache of the entity within an EditedEntity used to be copied along
the entity itself during a cloning operation of the EditedEntity. This raises
an issue when the adapters' cache is not empty and contains cached values
linking to transaction-specific data (or the transaction itself). This prevents
the clone EditedEntity being used in a transaction outside the one that created
it.
This change resets the adapters' cache of the new copy so that no cached value
remain. The new copy can then be used in a new transaction afterwards.
# 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/>.
"""hooks to ensure use_email / primary_email relations consistency"""
from cubicweb.server import hook
class SetUseEmailRelationOp(hook.Operation):
"""delay this operation to commit to avoid conflict with a late rql query
already setting the relation
"""
rtype = 'use_email'
entity = email = None # make pylint happy
def condition(self):
"""check entity has use_email set for the email address"""
return not any(e for e in self.entity.use_email
if self.email.eid == e.eid)
def precommit_event(self):
if self.cnx.deleted_in_transaction(self.entity.eid):
return
if self.cnx.deleted_in_transaction(self.email.eid):
return
if self.condition():
self.cnx.execute(
'SET X %s Y WHERE X eid %%(x)s, Y eid %%(y)s' % self.rtype,
{'x': self.entity.eid, 'y': self.email.eid})
class SetPrimaryEmailRelationOp(SetUseEmailRelationOp):
rtype = 'primary_email'
def condition(self):
"""check entity has no primary_email set"""
return not self.entity.primary_email
class SetPrimaryEmailHook(hook.Hook):
"""notify when a bug or story or version has its state modified"""
__regid__ = 'setprimaryemail'
__select__ = hook.Hook.__select__ & hook.match_rtype('use_email')
category = 'email'
events = ('after_add_relation',)
def __call__(self):
entity = self._cw.entity_from_eid(self.eidfrom)
if 'primary_email' in entity.e_schema.subject_relations():
SetPrimaryEmailRelationOp(self._cw, entity=entity,
email=self._cw.entity_from_eid(self.eidto))
class SetUseEmailHook(hook.Hook):
"""notify when a bug or story or version has its state modified"""
__regid__ = 'setprimaryemail'
__select__ = hook.Hook.__select__ & hook.match_rtype('primary_email')
category = 'email'
events = ('after_add_relation',)
def __call__(self):
entity = self._cw.entity_from_eid(self.eidfrom)
if 'use_email' in entity.e_schema.subject_relations():
SetUseEmailRelationOp(self._cw, entity=entity,
email=self._cw.entity_from_eid(self.eidto))