def _property_object_from_path(self, path_components):
prev_component = path_components[0]
lom_object = get_root_prop(self._external_device, path_components[0])
for component in path_components[1:]:
try:
raise component.isdigit() and (is_object_iterable(lom_object)
or AssertionError)
if not prev_component in TUPLE_TYPES.keys():
raise AssertionError
lom_object = lom_object[int(component)]
else:
lom_object = getattr(lom_object, component)
if isinstance(lom_object, HIDDEN_TYPES):
raise AttributeError
except IndexError:
raise LomAttributeError("invalid index of component '%s'" %
prev_component)
except AttributeError:
raise LomAttributeError("invalid path component '%s'" %
component)
else:
prev_component = component
if not is_lom_object(lom_object, self._lom_classes):
raise LomObjectError("component '%s' is not an object" %
prev_component)
return lom_object
def _set_property_value(self, lom_object, property_name, value):
verify_object_property(lom_object, property_name)
prop = getattr(lom_object, property_name)
if property_name in PROPERTY_TYPES.keys():
if not is_lom_object(value, self.lom_classes):
raise LomAttributeError('set: no valid object id')
if not isinstance(value, PROPERTY_TYPES[property_name]):
raise LomAttributeError('set: type mismatch')
elif isinstance(prop, (int, bool)):
if unicode(value) in (u'True', u'False'):
value = int(unicode(value) == u'True')
elif not isinstance(value, int):
raise LomAttributeError('set: invalid value')
elif isinstance(prop, float):
if not isinstance(value, (int, float)):
raise LomAttributeError('set: type mismatch')
value = float(value)
elif isinstance(prop, (str, unicode)):
if not isinstance(value, (str,
unicode,
int,
float)):
raise LomAttributeError('set: type mismatch')
value = unicode(value)
else:
raise LomAttributeError('set: unsupported property type')
setattr(lom_object, property_name, value)