Package tech.tablesaw.columns.instant

Class PackedInstant

java.lang.Object

tech.tablesaw.columns.instant.PackedInstant

Direct Known Subclasses:

PackedLocalDateTime

public class PackedInstant
extends Object

A short localdatetime packed into a single long value. The long is comprised of an int for the date and an int for the time

The bytes are packed into the date int as: First two bytes: short (year) next byte (month of year) last byte (day of month)

The bytes are packed into the time int as First byte: hourOfDay next byte: minuteOfHour last two bytes (short): millisecond of minute

Storing the millisecond of minute in an short requires that we treat the short as if it were unsigned. Unfortunately, Neither Java nor Guava provide unsigned short support so we use char, which is a 16-bit unsigned int to store values of up to 60,000 milliseconds (60 secs * 1000)

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	PackedInstant()

Method Summary

Modifier and Type	Method	Description
static Instant	asInstant(long dateTime)
static long	create(int date, int time)
static int	date(long packedDateTIme)
static int	daysUntil(long packedDateTimeEnd, long packedDateTimeStart)
static long	hoursUntil(long packedDateTimeEnd, long packedDateTimeStart)
static boolean	isAfter(long packedDateTime, long value)
static boolean	isBefore(long packedDateTime, long value)
static boolean	isEqualTo(long packedDateTime, long value)
static boolean	isOnOrAfter(long valueToTest, long valueToTestAgainst)
static boolean	isOnOrBefore(long valueToTest, long valueToTestAgainst)
static long	minutesUntil(long packedDateTimeEnd, long packedDateTimeStart)
static long	pack(Instant instant)
protected static long	pack(LocalDate date, LocalTime time)
static long	plus(long packedDateTime, long amountToAdd, TemporalUnit unit)	Returns the given packedDateTime with amtToAdd of temporal units added
static int	time(long packedDateTIme)
static String	toString(long dateTime)
static int	weeksUntil(long packedDateTimeEnd, long packedDateStart)

Methods inherited from class java.lang.Object

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

Constructor Detail

PackedInstant

protected PackedInstant()

Method Detail

asInstant

public static Instant asInstant(long dateTime)

pack

protected static long pack(LocalDate date,
                           LocalTime time)

pack

public static long pack(Instant instant)

date

public static int date(long packedDateTIme)

time

public static int time(long packedDateTIme)

toString

public static String toString(long dateTime)

plus

public static long plus(long packedDateTime,
                        long amountToAdd,
                        TemporalUnit unit)

Returns the given packedDateTime with amtToAdd of temporal units added

TODO(lwhite): Replace with a native implementation that doesn't convert everything to LocalDateTime

isAfter

public static boolean isAfter(long packedDateTime,
                              long value)

isBefore

public static boolean isBefore(long packedDateTime,
                               long value)

create

public static long create(int date,
                          int time)

minutesUntil

public static long minutesUntil(long packedDateTimeEnd,
                                long packedDateTimeStart)

hoursUntil

public static long hoursUntil(long packedDateTimeEnd,
                              long packedDateTimeStart)

daysUntil

public static int daysUntil(long packedDateTimeEnd,
                            long packedDateTimeStart)

weeksUntil

public static int weeksUntil(long packedDateTimeEnd,
                             long packedDateStart)

isEqualTo

public static boolean isEqualTo(long packedDateTime,
                                long value)

isOnOrAfter

public static boolean isOnOrAfter(long valueToTest,
                                  long valueToTestAgainst)

isOnOrBefore

public static boolean isOnOrBefore(long valueToTest,
                                   long valueToTestAgainst)