def set(self, state, dict_, initiator,
passive=attributes.PASSIVE_OFF,
check_old=None,
pop=False):
# Set us on the state.
dict_[self.key] = initiator
if initiator is None:
# Nullify relationship args
dict_[self.parent_token.id.key] = None
dict_[self.parent_token.discriminator.key] = None
else:
# Get the primary key of the initiator and ensure we
# can support this assignment.
mapper = class_mapper(type(initiator))
if len(mapper.primary_key) > 1:
raise sa_exc.InvalidRequestError(
'Generic relationships against tables with composite '
'primary keys are not supported.')
pk = mapper.identity_key_from_instance(initiator)[1][0]
# Set the identifier and the discriminator.
discriminator = table_name(initiator)
dict_[self.parent_token.id.key] = pk
dict_[self.parent_token.discriminator.key] = discriminator
def set(self, state, dict_, initiator,
passive=attributes.PASSIVE_OFF,
check_old=None,
pop=False):
# Set us on the state.
dict_[self.key] = initiator
# Get the primary key of the initiator and ensure we
# can support this assignment.
mapper = class_mapper(type(initiator))
if len(mapper.primary_key) > 1:
raise sa_exc.InvalidRequestError(
'Generic relationships against tables with composite '
'primary keys are not supported.')
pk = mapper.identity_key_from_instance(initiator)[1][0]
# Set the identifier and the discriminator.
discriminator = table_name(initiator)
dict_[self.parent_token.id.key] = pk
dict_[self.parent_token.discriminator.key] = discriminator
def class_from_table_name(state, table):
for class_ in state.class_._decl_class_registry.values():
name = table_name(class_)
if name and name == table:
return class_
return None
def is_type(self, other):
discriminator = table_name(other)
return self.property._discriminator_col == discriminator
def __eq__(self, other):
discriminator = table_name(other)
q = self.property._discriminator_col == discriminator
q &= self.property._id_col == other.id
return q
def class_from_table_name(state, table):
for class_ in state.class_._decl_class_registry.values():
name = table_name(class_)
if name and name == table:
return class_
return None
def is_type(self, other):
discriminator = table_name(other)
return self.property._discriminator_col == discriminator
def __eq__(self, other):
discriminator = table_name(other)
q = self.property._discriminator_col == discriminator
q &= self.property._id_col == other.id
return q
