def as_related_collection(cls, aggregate, relationship):
"""
Creates a new relationship collection with a relationship aggregate
and the relationship's relator as a parent.
"""
rel_coll = cls.create_from_aggregate(aggregate,
relationship=relationship)
# The member at the origin of the relationship is the parent.
rel_coll.__parent__ = relationship.relator
# Set the collection's name to the descriptor's resource
# attribute name.
rel_coll.__name__ = \
slug_from_identifier(relationship.descriptor.resource_attr)
return rel_coll
def as_related_collection(cls, aggregate, relationship):
"""
Creates a new relationship collection with a relationship aggregate
and the relationship's relator as a parent.
"""
rel_coll = cls.create_from_aggregate(aggregate,
relationship=relationship)
# The member at the origin of the relationship is the parent.
rel_coll.__parent__ = relationship.relator
# Set the collection's name to the descriptor's resource
# attribute name.
rel_coll.__name__ = \
slug_from_identifier(relationship.descriptor.resource_attr)
return rel_coll
def __get__(self, resource, resource_class):
if not resource is None:
obj = self._get_nested(resource.get_entity(), self.entity_attr)
if not obj is None:
if not self.is_nested:
member = as_member(obj)
coll = get_root_collection(member)
member.__parent__ = coll
else:
member = as_member(obj, parent=resource)
member.__name__ = slug_from_identifier(self.resource_attr)
else:
member = obj
else:
# class level access
member = self
return member
def __make_collection(self, resource, parent, children):
# Create a new collection.
rc_parent = resource.__parent__
rc_repo = None
while not rc_parent is None:
rc_repo = getattr(rc_parent, '__repository__', None)
if not rc_repo is None:
break
else:
rc_parent = rc_parent.__parent__
# Create a new collection.
# if not resource.__parent__ is None:
# # Use the resource repository that created this resource's
# # root collection to create the new collection.
# rc_repo = getattr(resource.__parent__, '__repository__', None)
# if rc_repo is None:
# for rc in lineage(resource.__parent__):
# rc_repo = getattr(rc, '__repository__', None)
# if not rc_repo is None:
# break
if not rc_repo is None:
coll = rc_repo.get_collection(self.attr_type)
else:
# This is a floating member.
coll = create_staging_collection(self.attr_type)
# Set up entity access in the new collection.
agg_relationship = Relationship(parent, children,
backref=self.__entity_backref)
agg = coll.get_aggregate()
agg.set_relationship(agg_relationship)
# Set up URL generation.
if self.is_nested:
# Make URL generation relative to the resource.
coll.__parent__ = resource
# Set the collection's name to the descriptor's resource
# attribute name.
coll.__name__ = slug_from_identifier(self.resource_attr)
else:
# Add a filter specification for the root collection through
# a relationship.
coll_relationship = Relationship(resource, coll,
backref=self.__resource_backref)
coll.set_relationship(coll_relationship)
return coll
def __preprocess_attribute(self, attr_name):
return slug_from_identifier(attr_name)
def _as_string(self):
return self.__cql_format % dict(attr=self.attr_name,
op=slug_from_identifier(self.op_name),
val=self.value)
def _as_string(self):
#: Returns this CQL expression as a string.
return self.__cql_format % dict(attr=self.attr_name,
op=slug_from_identifier(self.op_name),
val=self.value)
def test_get_slug_from_identifier(self):
self.assert_equal(slug_from_identifier('a_b'), 'a-b')
def _as_string(self):
#: Returns this CQL expression as a string.
return self.__cql_format % dict(attr=self.attr_name,
op=slug_from_identifier(self.op_name),
val=self.value)
def test_get_slug_from_identifier(self):
self.assert_equal(slug_from_identifier('a_b'), 'a-b')
def test_get_slug_from_identifier(self):
self.assert_equal(slug_from_identifier("a_b"), "a-b")
