private static Slice dateFormat(
ISOChronology chronology, Locale locale, long timestamp, Slice formatString) {
DateTimeFormatter formatter =
DATETIME_FORMATTER_CACHE.get(formatString).withChronology(chronology).withLocale(locale);
return Slices.copiedBuffer(formatter.print(timestamp), Charsets.UTF_8);
}
@ScalarFunction
@SqlType(TimestampType.class)
public static long dateParse(
ConnectorSession session,
@SqlType(VarcharType.class) Slice dateTime,
@SqlType(VarcharType.class) Slice formatString) {
DateTimeFormatter formatter =
DATETIME_FORMATTER_CACHE
.get(formatString)
.withChronology(getChronology(session.getTimeZoneKey()))
.withLocale(session.getLocale());
try {
return formatter.parseMillis(dateTime.toString(Charsets.UTF_8));
} catch (IllegalArgumentException e) {
throw new PrestoException(StandardErrorCode.INVALID_FUNCTION_ARGUMENT.toErrorCode(), e);
}
}