private static Date convertDate(long days) {
        LocalDate localDate = LocalDate.ofEpochDay(days);
        return Date.valueOf(localDate);
    }
Runtime converter that converts objects of Flink Table & SQL internal data structures to
corresponding {@link Object}s.
inlong-sdk/transform-sdk/src/main/java/org/apache/inlong/sdk/transform/utils/RowToFieldDataUtils.java