public void set(int elementNum, HiveIntervalDayTime intervalDayTime) {
    this.totalSeconds[elementNum] = intervalDayTime.getTotalSeconds();
    this.nanos[elementNum] = intervalDayTime.getNanos();
  }
Set a field from a HiveIntervalDayTime.

This is a FAST version that assumes the caller has checked to make sure the sourceBuf
is not null and elementNum is correctly adjusted for isRepeating.  And, that the isNull entry
has been set.  Only the output entry fields will be set by this method.

@param elementNum
@param intervalDayTime
storage-api/src/java/org/apache/hadoop/hive/ql/exec/vector/IntervalDayTimeColumnVector.java