def get_last_tid(self):
        try:
            spec = {'tid': {'$gt': 0}}
            sort = [('tid', -1)]
            row = self.db.docs.find_one(spec, sort=sort)
        except Exception as e:
            raise DatabaseException(e)
        if row:
            return row['tid']
        return 0
def __add_random_fuzzing_values(self):
        n = self.ui.spinBoxNumberRandom.value()
        minimum = self.ui.spinBoxRandomMinimum.value()
        maximum = self.ui.spinBoxRandomMaximum.value()
        self.fuzz_table_model.add_random(n, minimum, maximum)