Package org.apache.orc.impl

Class DateUtils

java.lang.Object

org.apache.orc.impl.DateUtils

public class DateUtils
extends Object

Conversion utilities from the hybrid Julian/Gregorian calendar to/from the proleptic Gregorian.

The semantics here are to hold the string representation constant and change the epoch offset rather than holding the instant in time constant and change the string representation.

These utilities will be fast for the common case (> 1582 AD), but slow for old dates.

Method Summary

Modifier and Type	Method	Description
static int	convertDate(int original, boolean fromProleptic, boolean toProleptic)
static int	convertDateToHybrid(int proleptic)	Convert an epoch day from the proleptic Gregorian calendar to the hybrid Julian/Gregorian.
static int	convertDateToProleptic(int hybrid)	Convert an epoch day from the hybrid Julian/Gregorian calendar to the proleptic Gregorian.
static long	convertTime(long original, boolean fromProleptic, boolean toProleptic, boolean useUtc)
static long	convertTimeToHybrid(long proleptic, boolean useUtc)	Convert epoch millis from the proleptic Gregorian calendar to the hybrid Julian/Gregorian.
static long	convertTimeToProleptic(long hybrid, boolean useUtc)	Convert epoch millis from the hybrid Julian/Gregorian calendar to the proleptic Gregorian.
static DateTimeFormatter	getTimeFormat(boolean useProleptic, boolean useUtc)
static Integer	parseDate(String date, boolean fromProleptic)
static Long	parseTime(String date, boolean fromProleptic, boolean useUtc)
static String	printDate(int date, boolean fromProleptic)
static String	printTime(long millis, boolean fromProleptic, boolean useUtc)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Details

convertDateToProleptic

public static int convertDateToProleptic(int hybrid)

Convert an epoch day from the hybrid Julian/Gregorian calendar to the proleptic Gregorian.

Parameters:

hybrid - day of epoch in the hybrid Julian/Gregorian

Returns:

day of epoch in the proleptic Gregorian

convertDateToHybrid

public static int convertDateToHybrid(int proleptic)

Convert an epoch day from the proleptic Gregorian calendar to the hybrid Julian/Gregorian.

Parameters:

proleptic - day of epoch in the proleptic Gregorian

Returns:

day of epoch in the hybrid Julian/Gregorian

convertTimeToProleptic

public static long convertTimeToProleptic(long hybrid,
 boolean useUtc)

Convert epoch millis from the hybrid Julian/Gregorian calendar to the proleptic Gregorian.

Parameters:

hybrid - millis of epoch in the hybrid Julian/Gregorian

useUtc - use UTC instead of local

Returns:

millis of epoch in the proleptic Gregorian

convertTimeToHybrid

public static long convertTimeToHybrid(long proleptic,
 boolean useUtc)

Convert epoch millis from the proleptic Gregorian calendar to the hybrid Julian/Gregorian.

Parameters:

proleptic - millis of epoch in the proleptic Gregorian

useUtc - use UTC instead of local

Returns:

millis of epoch in the hybrid Julian/Gregorian

convertDate

public static int convertDate(int original,
 boolean fromProleptic,
 boolean toProleptic)

convertTime

public static long convertTime(long original,
 boolean fromProleptic,
 boolean toProleptic,
 boolean useUtc)

parseDate

public static Integer parseDate(String date,
 boolean fromProleptic)

printDate

public static String printDate(int date,
 boolean fromProleptic)

getTimeFormat

public static DateTimeFormatter getTimeFormat(boolean useProleptic,
 boolean useUtc)

parseTime

public static Long parseTime(String date,
 boolean fromProleptic,
 boolean useUtc)

printTime

public static String printTime(long millis,
 boolean fromProleptic,
 boolean useUtc)