def __get_patch_context(self, rc, attributes):
# Use this to create am XML representation of the given resource
# which *only* contains the given attributes (useful for PATCHing).
attr_map = get_resource_class_attributes(rc)
cfg_opts = dict([((attr_name, ), {
IGNORE_OPTION: True
}) for attr_name in attr_map])
for attr_key in attributes:
attr_cfg_opts = {IGNORE_OPTION: False}
if isinstance(attr_key, string_types):
key = (attr_key, )
rc_attr = attr_map[attr_key]
if not rc_attr.kind == RESOURCE_ATTRIBUTE_KINDS.TERMINAL:
attr_cfg_opts[WRITE_AS_LINK_OPTION] = False
# Disable nested attributes.
# FIXME: This should be recursive.
for attr_attr_name in \
get_resource_class_attributes(rc_attr.attr_type):
cfg_opts[(attr_key, attr_attr_name)] = \
{IGNORE_OPTION:True}
else:
key = attr_key
cfg_opts[key] = attr_cfg_opts
return UpdatingRepresenterConfigurationContext(
type(rc), XmlMime, attribute_options=cfg_opts)
def __get_patch_context(self, rc, attributes):
# Use this to create am XML representation of the given resource
# which *only* contains the given attributes (useful for PATCHing).
attr_map = get_resource_class_attributes(rc)
cfg_opts = dict([((attr_name,), {IGNORE_OPTION:True})
for attr_name in attr_map])
for attr_key in attributes:
attr_cfg_opts = {IGNORE_OPTION:False}
if isinstance(attr_key, string_types):
key = (attr_key,)
rc_attr = attr_map[attr_key]
if not rc_attr.kind == RESOURCE_ATTRIBUTE_KINDS.TERMINAL:
attr_cfg_opts[WRITE_AS_LINK_OPTION] = False
# Disable nested attributes.
# FIXME: This should be recursive.
for attr_attr_name in \
get_resource_class_attributes(rc_attr.attr_type):
cfg_opts[(attr_key, attr_attr_name)] = \
{IGNORE_OPTION:True}
else:
key = attr_key
cfg_opts[key] = attr_cfg_opts
return UpdatingRepresenterConfigurationContext(type(rc),
XmlMime,
attribute_options=
cfg_opts)
def __convert_to_entity_attr(self, rc_attr_name):
entity_attr_tokens = []
rc_class = self.__rc_class
for rc_attr_token in rc_attr_name.split('.'):
rc_attr = get_resource_class_attributes(rc_class)[rc_attr_token]
ent_attr_name = rc_attr.entity_name
if ent_attr_name is None:
raise ValueError('Resource attribute "%s" does not have a '
'corresponding entity attribute.'
% rc_attr.name)
if rc_attr.kind != ResourceAttributeKinds.TERMINAL:
# Look up the member class for the specified member or
# collection resource interface.
rc_class = get_member_class(rc_attr.value_type)
entity_attr_tokens.append(ent_attr_name)
return '.'.join(entity_attr_tokens)
def __collect_mapped_attributes(self, mapped_class, key):
if isinstance(key, MappedAttributeKey):
names = key.names
else:
names = key
collected_mp_attrs = OrderedDict()
is_mapped_cls = mapped_class is self.__mapped_cls
if len(names) == 0 and is_mapped_cls:
# Bootstrapping: fetch resource attributes and create new
# mapped attributes.
rc_attrs = get_resource_class_attributes(self.__mapped_cls)
for rc_attr in itervalues_(rc_attrs):
attr_key = names + (rc_attr.resource_attr,)
attr_mp_opts = \
self.__configurations[-1].get_attribute_options(attr_key)
new_mp_attr = MappedAttribute(rc_attr, options=attr_mp_opts)
collected_mp_attrs[new_mp_attr.resource_attr] = new_mp_attr
else:
# Indirect access - fetch mapped attributes from some other
# class' mapping and clone.
if is_mapped_cls:
mp = self
elif len(names) == 0 and self.__is_collection_mapping:
if provides_member_resource(mapped_class):
# Mapping a polymorphic member class.
mapped_coll_cls = get_collection_class(mapped_class)
else:
# Mapping a derived collection class.
mapped_coll_cls = mapped_class
mp = self.__mp_reg.find_or_create_mapping(mapped_coll_cls)
else:
mp = self.__mp_reg.find_or_create_mapping(mapped_class)
mp_attrs = mp.get_attribute_map()
for mp_attr in itervalues_(mp_attrs):
attr_key = names + (mp_attr.name,)
attr_mp_opts = \
dict(((k, v)
for (k, v) in
iteritems_(self.__configurations[-1]
.get_attribute_options(attr_key))
if not v is None))
clnd_mp_attr = mp_attr.clone(options=attr_mp_opts)
collected_mp_attrs[mp_attr.name] = clnd_mp_attr
return collected_mp_attrs
def __collect_mapped_attributes(self, mapped_class, key):
if isinstance(key, MappedAttributeKey):
names = key.names
else:
names = key
collected_mp_attrs = OrderedDict()
is_mapped_cls = mapped_class is self.__mapped_cls
if len(names) == 0 and is_mapped_cls:
# Bootstrapping: fetch resource attributes and create new
# mapped attributes.
rc_attrs = get_resource_class_attributes(self.__mapped_cls)
for rc_attr in itervalues_(rc_attrs):
attr_key = names + (rc_attr.resource_attr,)
attr_mp_opts = \
self.__configurations[-1].get_attribute_options(attr_key)
new_mp_attr = MappedAttribute(rc_attr, options=attr_mp_opts)
collected_mp_attrs[new_mp_attr.resource_attr] = new_mp_attr
else:
# Indirect access - fetch mapped attributes from some other
# class' mapping and clone.
if is_mapped_cls:
mp = self
elif len(names) == 0 and self.__is_collection_mapping:
if provides_member_resource(mapped_class):
# Mapping a polymorphic member class.
mapped_coll_cls = get_collection_class(mapped_class)
else:
# Mapping a derived collection class.
mapped_coll_cls = mapped_class
mp = self.__mp_reg.find_or_create_mapping(mapped_coll_cls)
else:
mp = self.__mp_reg.find_or_create_mapping(mapped_class)
mp_attrs = mp.get_attribute_map()
for mp_attr in itervalues_(mp_attrs):
attr_key = names + (mp_attr.name,)
attr_mp_opts = \
dict(((k, v)
for (k, v) in
iteritems_(self.__configurations[-1]
.get_attribute_options(attr_key))
if not v is None))
clnd_mp_attr = mp_attr.clone(options=attr_mp_opts)
collected_mp_attrs[mp_attr.resource_attr] = clnd_mp_attr
return collected_mp_attrs
def test_types(self):
attrs = iter(get_resource_class_attributes(MyEntityMember).values())
attr0 = next(attrs)
self.assert_equal(attr0.resource_attr, ATTRIBUTE_NAMES[0])
self.assert_equal(attr0.kind, RESOURCE_ATTRIBUTE_KINDS.TERMINAL)
self.assert_equal(attr0.entity_attr, 'id')
self.assert_equal(attr0.attr_type, int)
attr1 = next(attrs)
self.assert_equal(attr1.resource_attr, ATTRIBUTE_NAMES[1])
self.assert_equal(attr1.kind, RESOURCE_ATTRIBUTE_KINDS.MEMBER)
self.assert_equal(attr1.entity_attr, 'parent')
self.assert_equal(attr1.attr_type, IMyEntityParent)
attr2 = next(attrs)
self.assert_equal(attr2.resource_attr, ATTRIBUTE_NAMES[2])
self.assert_equal(attr2.kind,
RESOURCE_ATTRIBUTE_KINDS.COLLECTION)
self.assert_equal(attr2.entity_attr, 'children')
self.assert_equal(attr2.attr_type, IMyEntityChild)
attr3 = next(attrs)
self.assert_equal(attr3.resource_attr, ATTRIBUTE_NAMES[3])
self.assert_equal(attr3.kind, RESOURCE_ATTRIBUTE_KINDS.TERMINAL)
self.assert_equal(attr3.entity_attr, 'text')
self.assert_equal(attr3.attr_type, str)
attr4 = next(attrs)
self.assert_equal(attr4.resource_attr, ATTRIBUTE_NAMES[4])
attr5 = next(attrs)
self.assert_equal(attr5.resource_attr, ATTRIBUTE_NAMES[5])
self.assert_equal(attr5.kind, RESOURCE_ATTRIBUTE_KINDS.TERMINAL)
self.assert_equal(attr5.entity_attr, 'number')
self.assert_equal(attr5.attr_type, int)
self.assert_true(is_resource_class_member_attribute(MyEntityMember,
'parent'))
self.assert_true(is_resource_class_collection_attribute(MyEntityMember,
'children'))
self.assert_true(is_resource_class_resource_attribute(MyEntityMember,
'parent'))
self.assert_true(is_resource_class_resource_attribute(MyEntityMember,
'children'))
self.assert_true(isinstance(getattr(MyEntityMember, 'id'),
terminal_attribute))
def test_types(self):
attrs = iter(get_resource_class_attributes(MyEntityMember).values())
attr0 = next(attrs)
self.assert_equal(attr0.resource_attr, ATTRIBUTE_NAMES[0])
self.assert_equal(attr0.kind, RESOURCE_ATTRIBUTE_KINDS.TERMINAL)
self.assert_equal(attr0.entity_attr, 'id')
self.assert_equal(attr0.attr_type, int)
attr1 = next(attrs)
self.assert_equal(attr1.resource_attr, ATTRIBUTE_NAMES[1])
self.assert_equal(attr1.kind, RESOURCE_ATTRIBUTE_KINDS.MEMBER)
self.assert_equal(attr1.entity_attr, 'parent')
self.assert_equal(attr1.attr_type, IMyEntityParent)
attr2 = next(attrs)
self.assert_equal(attr2.resource_attr, ATTRIBUTE_NAMES[2])
self.assert_equal(attr2.kind, RESOURCE_ATTRIBUTE_KINDS.COLLECTION)
self.assert_equal(attr2.entity_attr, 'children')
self.assert_equal(attr2.attr_type, IMyEntityChild)
attr3 = next(attrs)
self.assert_equal(attr3.resource_attr, ATTRIBUTE_NAMES[3])
self.assert_equal(attr3.kind, RESOURCE_ATTRIBUTE_KINDS.TERMINAL)
self.assert_equal(attr3.entity_attr, 'text')
self.assert_equal(attr3.attr_type, str)
attr4 = next(attrs)
self.assert_equal(attr4.resource_attr, ATTRIBUTE_NAMES[4])
attr5 = next(attrs)
self.assert_equal(attr5.resource_attr, ATTRIBUTE_NAMES[5])
self.assert_equal(attr5.kind, RESOURCE_ATTRIBUTE_KINDS.TERMINAL)
self.assert_equal(attr5.entity_attr, 'number')
self.assert_equal(attr5.attr_type, int)
self.assert_true(
is_resource_class_member_attribute(MyEntityMember, 'parent'))
self.assert_true(
is_resource_class_collection_attribute(MyEntityMember, 'children'))
self.assert_true(
is_resource_class_resource_attribute(MyEntityMember, 'parent'))
self.assert_true(
is_resource_class_resource_attribute(MyEntityMember, 'children'))
self.assert_true(
isinstance(getattr(MyEntityMember, 'id'), terminal_attribute))
def visit(rc, grph, dep_grph):
mb_cls = type(rc)
attr_map = get_resource_class_attributes(mb_cls)
for attr_name, attr in iteritems_(attr_map):
if is_resource_class_terminal_attribute(mb_cls, attr_name):
continue
# Only follow the resource attribute if the dependency graph
# has an edge here.
child_mb_cls = get_member_class(attr.attr_type)
if not dep_grph.has_edge((mb_cls, child_mb_cls)):
continue
child_rc = getattr(rc, attr_name)
if is_resource_class_collection_attribute(mb_cls, attr_name):
for child_mb in child_rc:
if not grph.has_node(child_mb): # Ignore cyclic references.
grph.add_node(child_mb)
grph.add_edge((rc, child_mb))
visit(child_mb, grph, dep_grph)
else: # Member.
if not grph.has_node(child_rc): # Ignore cyclic references.
grph.add_node(child_rc)
grph.add_edge((rc, child_rc))
visit(child_rc, grph, dep_grph)
def visit(rc, grph, dep_grph):
mb_cls = type(rc)
attr_map = get_resource_class_attributes(mb_cls)
for attr_name, attr in iteritems_(attr_map):
if is_resource_class_terminal_attribute(mb_cls, attr_name):
continue
# Only follow the resource attribute if the dependency graph
# has an edge here.
child_mb_cls = get_member_class(attr.attr_type)
if not dep_grph.has_edge((mb_cls, child_mb_cls)):
continue
child_rc = getattr(rc, attr_name)
if is_resource_class_collection_attribute(mb_cls, attr_name):
for child_mb in child_rc:
if not grph.has_node(
child_mb): # Ignore cyclic references.
grph.add_node(child_mb)
grph.add_edge((rc, child_mb))
visit(child_mb, grph, dep_grph)
else: # Member.
if not grph.has_node(child_rc): # Ignore cyclic references.
grph.add_node(child_rc)
grph.add_edge((rc, child_rc))
visit(child_rc, grph, dep_grph)
def __getitem__(self, item):
ident = identifier_from_slug(item)
attr = get_resource_class_attributes(self.__class__).get(ident)
if attr is None or not attr.is_nested:
raise KeyError('%s' % ident)
return getattr(self, ident)
