1 """hooks to ensure use_email / primary_email relations consistency

     2 

     3 :organization: Logilab

     4 :copyright: 2001-2009 LOGILAB S.A. (Paris, FRANCE), license is LGPL v2.

     5 :contact: http://www.logilab.fr/ -- mailto:contact@logilab.fr

     6 :license: GNU Lesser General Public License, v2.1 - http://www.gnu.org/licenses

     7 """

     8 __docformat__ = "restructuredtext en"

     9 

    10 from cubicweb.server import hook

    11 

    12 class SetUseEmailRelationOp(hook.Operation):

    13     """delay this operation to commit to avoid conflict with a late rql query

    14     already setting the relation

    15     """

    16     rtype = 'use_email'

    17     entity = email = None # make pylint happy

    18 

    19     def condition(self):

    20         """check entity has use_email set for the email address"""

    21         return not any(e for e in self.entity.use_email

    22                        if self.email.eid == e.eid)

    23 

    24     def precommit_event(self):

    25         if self.condition():

    26             self.session.unsafe_execute(

    27                 'SET X %s Y WHERE X eid %%(x)s, Y eid %%(y)s' % self.rtype,

    28                 {'x': self.entity.eid, 'y': self.email.eid}, 'x')

    29 

    30 class SetPrimaryEmailRelationOp(SetUseEmailRelationOp):

    31     rtype = 'primary_email'

    32 

    33     def condition(self):

    34         """check entity has no primary_email set"""

    35         return not self.entity.primary_email

    36 

    37 

    38 class SetPrimaryEmailHook(hook.Hook):

    39     """notify when a bug or story or version has its state modified"""

    40     __id__ = 'setprimaryemail'

    41     __select__ = hook.Hook.__select__ & hook.match_rtype('use_email')

    42     category = 'email'

    43     events = ('after_add_relation',)

    44 

    45     def call(self, session, eidfrom, rtype, eidto):

    46         entity = self.cw_req.entity_from_eid(self.eidfrom)

    47         if 'primary_email' in entity.e_schema.subject_relations():

    48             SetPrimaryEmailRelationOp(self.cw_req, entity=entity,

    49                                       email=self.cw_req.entity_from_eid(self.eidto))

    50 

    51 class SetUseEmailHook(hook.Hook):

    52     """notify when a bug or story or version has its state modified"""

    53     __id__ = 'setprimaryemail'

    54     __select__ = hook.Hook.__select__ & hook.match_rtype('primary_email')

    55     category = 'email'

    56     events = ('after_add_relation',)

    57 

    58     def __call__(self):

    59         entity = self.cw_req.entity_from_eid(self.eidfrom)

    60         if 'use_email' in entity.e_schema.subject_relations():

    61             SetUseEmailRelationOp(self.cw_req, entity=entity,

    62                                   email=self.cw_req.entity_from_eid(self.eidto))