@Override
  public boolean isEqualPrimitive(String s1, String s2) {
    return (s1 == null && s2 == null) || (s1 != null && s1.equals(s2));
  }
Calculates ranges on longs representing localtz timestamps in seconds returned by
IntervalDayTimeColumnVector.getTotalSeconds. Refer to VectorPTFGroupBatches.getValue for
INTERVAL_DAY_TIME.
ql/src/java/org/apache/hadoop/hive/ql/udf/ptf/ValueBoundaryScanner.java