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Add reverse functions to DateTimeUtil #1003

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Merged
rdblue merged 1 commit into from
May 5, 2020
Merged

Add reverse functions to DateTimeUtil #1003

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16 changes: 16 additions & 0 deletions data/src/main/java/org/apache/iceberg/data/DateTimeUtil.java
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Original file line number Diff line number Diff line change
Expand Up @@ -38,15 +38,31 @@ public static LocalDate dateFromDays(int daysFromEpoch) {
return ChronoUnit.DAYS.addTo(EPOCH_DAY, daysFromEpoch);
}

public static int daysFromDate(LocalDate date) {
return (int) ChronoUnit.DAYS.between(EPOCH_DAY, date);
}

public static LocalTime timeFromMicros(long microFromMidnight) {
return LocalTime.ofNanoOfDay(microFromMidnight * 1000);
}

public static long microsFromTime(LocalTime time) {
return time.toNanoOfDay() / 1000;
}

public static LocalDateTime timestampFromMicros(long microsFromEpoch) {
return ChronoUnit.MICROS.addTo(EPOCH, microsFromEpoch).toLocalDateTime();
}

public static long microsFromTimestamp(LocalDateTime dateTime) {
return ChronoUnit.MICROS.between(EPOCH, dateTime.atOffset(ZoneOffset.UTC));
}

public static OffsetDateTime timestamptzFromMicros(long microsFromEpoch) {
return ChronoUnit.MICROS.addTo(EPOCH, microsFromEpoch);
}

public static long microsFromTimestamptz(OffsetDateTime dateTime) {
return ChronoUnit.MICROS.between(EPOCH, dateTime);
}
}