def get_single(type_: str,
api_name: str,
session: scoped_session,
path: str = None) -> Dict[str, Any]:
"""Get instance of classes with single objects.
:param type_: type of object to be updated
:param api_name: api name specified while starting server
:param session: sqlalchemy scoped session
:param path: endpoint
:return: response containing information about a single object
Raises:
ClassNotFound: If `type_` does not represt a valid/defined RDFClass.
InstanceNotFound: If no Instance with type `type_` exists.
"""
instance = get_single_response(session, type_)
object_ = get(instance.id,
type_,
session=session,
api_name=api_name,
path=path)
if path is not None:
object_["@id"] = f"/{api_name}/{path}"
else:
object_["@id"] = f"/{api_name}/{type_}"
return object_
def update_single(object_: Dict[str, Any],
session: scoped_session,
api_name: str,
path: str = None) -> int:
"""Update instance of classes with single objects.
:param object_: new object
:param session: sqlalchemy scoped session
:param api_name: api name specified while starting server
:param path: endpoint
:return: id of the updated object
Raises:
ClassNotFound: If `object['@type']` does not represt a valid/defined RDFClass.
InstanceNotFound: If no Instance of the class exists.
"""
type_ = object_["@type"]
instance = get_single_response(session, type_)
return update(id_=instance.id,
type_=type_,
object_=object_,
session=session,
api_name=api_name,
path=path)
def delete_single(type_: str, session: scoped_session) -> None:
"""Delete instance of classes with single objects.
:param type_: type of object to be deleted
:param session: sqlalchemy scoped session
:return: None
Raises:
ClassNotFound: If `type_` does not represt a valid/defined RDFClass.
InstanceNotFound: If no Instance of the class exists.
"""
instance = get_single_response(session, type_)
return delete(instance.id, type_, session=session)