def append(self, obj):
"""Override the standard list append method.
Args:
obj: The object to append.
Returns:
Whatever list.append returns.
Raises:
exception.InvalidValue: The object is of the wrong type.
exception.DuplicateObject: An object with the same name or number that
already exists in the list.
"""
if not isinstance(obj, schema_object_class):
raise exception.InvalidValue(
'Expected %s instance, got %s' %
(str(schema_object_class), str(obj)))
if self.by_name(obj.base_name):
raise exception.DuplicateObject(
'Duplicate %s object by_name on %s: %s' %
(str(schema_object_class), self.parent.full_name,
obj.base_name))
if self.by_number(obj.number):
raise exception.DuplicateObject(
'Duplicate %s object by_number on %s: %s' %
(str(schema_object_class), self.parent.full_name,
obj.base_name))
self.__validate__(obj)
if not isinstance(self.parent, File):
obj.parent_list = self
obj.parent = self.parent
return list.append(self, obj)
def __validate__(self, trait):
if self.parent.typespace_list.by_name(trait.base_name):
raise exception.DuplicateObject(
'Duplicate Typespace/Trait object by_name on %s: %s' %
(self.parent.full_name, trait.base_name))