228     """check the relation satisfy its constraints

   228     """check the relation satisfy its constraints

   229 

   229 

   230     this is delayed to a precommit time operation since other relation which

   230     this is delayed to a precommit time operation since other relation which

   231     will make constraint satisfied may be added later.

   231     will make constraint satisfied may be added later.

   232     """

   232     """

   233     constraints = rproperty(session, rtype, eidfrom, eidto, 'constraints')

   235     constraints = rproperty(session, rtype, eidfrom, eidto, 'constraints')

   234     if constraints:

   236     if constraints:

   235         CheckConstraintsOperation(session, constraints=constraints,

   237         CheckConstraintsOperation(session, constraints=constraints,

   236                                   rdef=(eidfrom, rtype, eidto))

   238                                   rdef=(eidfrom, rtype, eidto))

   237 

   239 

   238 def uniquecstrcheck_before_modification(session, entity):

   240 def uniquecstrcheck_before_modification(session, entity):

   239     eschema = entity.e_schema

   243     eschema = entity.e_schema

   240     for attr, val in entity.items():

   244     for attr, val in entity.items():

   241         if val is None:

   245         if val is None:

   242             continue

   246             continue

   243         if eschema.subject_relation(attr).is_final() and \

   247         if eschema.subject_relation(attr).is_final() and \

   247             if rset and rset[0][0] != entity.eid:

   251             if rset and rset[0][0] != entity.eid:

   248                 msg = session._('the value "%s" is already used, use another one')

   252                 msg = session._('the value "%s" is already used, use another one')

   249                 raise ValidationError(entity.eid, {attr: msg % val})

   253                 raise ValidationError(entity.eid, {attr: msg % val})

   250 

   254 

   251 def cstrcheck_after_update_attributes(session, entity):

   255 def cstrcheck_after_update_attributes(session, entity):

   252     schema = session.vreg.schema

   258     schema = session.vreg.schema

   253     for attr in entity.edited_attributes:

   259     for attr in entity.edited_attributes:

   254         if schema.rschema(attr).is_final():

   260         if schema.rschema(attr).is_final():

   255             constraints = [c for c in entity.e_schema.constraints(attr)

   261             constraints = [c for c in entity.e_schema.constraints(attr)

   256                            if isinstance(c, RQLVocabularyConstraint)]

   262                            if isinstance(c, RQLVocabularyConstraint)]

   304         opcls(session, rtype=rtype, eid=eid)

   310         opcls(session, rtype=rtype, eid=eid)

   305 

   311 

   306 

   312 

   307 def cardinalitycheck_after_add_entity(session, entity):

   313 def cardinalitycheck_after_add_entity(session, entity):

   308     """check cardinalities are satisfied"""

   314     """check cardinalities are satisfied"""

   309     eid = entity.eid

   317     eid = entity.eid

   310     for rschema, targetschemas, x in entity.e_schema.relation_definitions():

   318     for rschema, targetschemas, x in entity.e_schema.relation_definitions():

   311         # skip automatically handled relations

   319         # skip automatically handled relations

   312         if rschema.type in DONT_CHECK_RTYPES_ON_ADD:

   320         if rschema.type in DONT_CHECK_RTYPES_ON_ADD:

   313             continue

   321             continue

   325         if card[cardindex] in '1+':

   333         if card[cardindex] in '1+':

   326             checkrel_if_necessary(session, opcls, rschema.type, eid)

   334             checkrel_if_necessary(session, opcls, rschema.type, eid)

   327 

   335 

   328 def cardinalitycheck_before_del_relation(session, eidfrom, rtype, eidto):

   336 def cardinalitycheck_before_del_relation(session, eidfrom, rtype, eidto):

   329     """check cardinalities are satisfied"""

   337     """check cardinalities are satisfied"""

   330     if rtype in DONT_CHECK_RTYPES_ON_DEL:

   340     if rtype in DONT_CHECK_RTYPES_ON_DEL:

   331         return

   341         return

   332     card = rproperty(session, rtype, eidfrom, eidto, 'cardinality')

   342     card = rproperty(session, rtype, eidfrom, eidto, 'cardinality')

   333     pendingrdefs = session.transaction_data.get('pendingrdefs', ())

   343     pendingrdefs = session.transaction_data.get('pendingrdefs', ())

   334     if (session.describe(eidfrom)[0], rtype, session.describe(eidto)[0]) in pendingrdefs:

   344     if (session.describe(eidfrom)[0], rtype, session.describe(eidto)[0]) in pendingrdefs: