private int convertToTime(JsonNode jsonNode) {
        TemporalAccessor parsedTime = SQL_TIME_FORMAT.parse(jsonNode.asText());
        LocalTime localTime = parsedTime.query(TemporalQueries.localTime());

        // get number of milliseconds of the day
        return localTime.toSecondOfDay() * 1000;
    }
Creates a runtime converter which assuming input object is not null.
inlong-sort/sort-flink/base/src/main/java/org/apache/inlong/sort/base/format/JsonToRowDataConverters.java