TimeStampHolder timeStampHolder = new TimeStampHolder();
timeStampHolder.value = fieldReader.readLong();
mapWriter.timeStamp(MappifyUtility.fieldValue).write(timeStampHolder);
break;
case INTERVAL:
IntervalHolder intervalHolder = new IntervalHolder();
Period period = fieldReader.readPeriod();
intervalHolder.months = (period.getYears() * org.apache.drill.exec.expr.fn.impl.DateUtility.yearsToMonths) + period.getMonths();
intervalHolder.days = period.getDays();
intervalHolder.milliseconds = (period.getHours() * org.apache.drill.exec.expr.fn.impl.DateUtility.hoursToMillis) +
(period.getMinutes() * org.apache.drill.exec.expr.fn.impl.DateUtility.minutesToMillis) +