def reload_index(self, progress_cb=dummy_progress_cb):
        nb_results = self.index.start_reload_index()
        progress = 0
        while self.index.continue_reload_index():
            progress_cb(progress, nb_results, self.INDEX_STEP_LOADING)
            progress += 1
        progress_cb(1, 1, self.INDEX_STEP_LOADING)
        self.index.end_reload_index()