:param querystr: The query string
:type querystr: utf-8 encoded str or unicode
:returns: Nothing
- :exception:
+ :raises:
:exc:`NullPointerError` if the query creation failed
(e.g. too little memory).
:exc:`NotInitializedError` if the underlying db was not
to get the value of this flag.
:returns: :class:`Threads`
- :exception: :exc:`NullPointerError` if search_threads failed
+ :raises: :exc:`NullPointerError` if search_threads failed
"""
self._assert_query_is_initialized()
threads_p = Query._search_threads(self._query)
:class:`Messages` in the defined sort order
:returns: :class:`Messages`
- :exception: :exc:`NullPointerError` if search_messages failed
+ :raises: :exc:`NullPointerError` if search_messages failed
"""
self._assert_query_is_initialized()
msgs_p = Query._search_messages(self._query)