org.datavec.dataframe.columns.packeddata

Class PackedLocalTime

java.lang.Object

org.datavec.dataframe.columns.packeddata.PackedLocalTime

public class PackedLocalTime
extends java.lang.Object

A localTime with millisecond precision packed into a single int value.

The bytes are packed into the 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)

Field Summary

Fields

Modifier and Type	Field and Description
static int	MIDNIGHT
static int	NOON

Constructor Summary

Constructors

Constructor and Description
PackedLocalTime()

Method Summary

Modifier and Type	Method and Description
static boolean	AM(int packedTime) Returns true if the time is in the AM or "before noon".
static java.time.LocalTime	asLocalTime(int time)
static byte	getHour(int time)
static int	getMillisecondOfDay(int packedLocalTime)
static char	getMillisecondOfMinute(int time)
static int	getMilliseconds(int time)
static byte	getMinute(int time)
static int	getMinuteOfDay(int packedLocalTime)
static int	getNano(int time)
static byte	getSecond(int packedLocalTime)
static int	getSecondOfDay(int packedLocalTime)
static boolean	isAfter(int packedTime, int value)
static boolean	isBefore(int packedTime, int value)
static boolean	isEqualTo(int packedTime, int value)
static boolean	isMidnight(int packedTime)
static boolean	isNoon(int packedTime)
static int	pack(java.time.LocalTime time)
static boolean	PM(int packedTime) Returns true if the time is in the PM or "after noon".
static long	toNanoOfDay(int time)
static java.lang.String	toShortTimeString(int time)

Methods inherited from class java.lang.Object

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

Field Detail

MIDNIGHT

public static final int MIDNIGHT

NOON

public static final int NOON

Constructor Detail

PackedLocalTime

public PackedLocalTime()

Method Detail

getHour

public static byte getHour(int time)

getMillisecondOfMinute

public static char getMillisecondOfMinute(int time)

getNano

public static int getNano(int time)

getMilliseconds

public static int getMilliseconds(int time)

toNanoOfDay

public static long toNanoOfDay(int time)

asLocalTime

public static java.time.LocalTime asLocalTime(int time)

getMinute

public static byte getMinute(int time)

pack

public static int pack(java.time.LocalTime time)

getSecond

public static byte getSecond(int packedLocalTime)

getMinuteOfDay

public static int getMinuteOfDay(int packedLocalTime)

getSecondOfDay

public static int getSecondOfDay(int packedLocalTime)

getMillisecondOfDay

public static int getMillisecondOfDay(int packedLocalTime)

toShortTimeString

public static java.lang.String toShortTimeString(int time)

isMidnight

public static boolean isMidnight(int packedTime)

isNoon

public static boolean isNoon(int packedTime)

isAfter

public static boolean isAfter(int packedTime,
                              int value)

isBefore

public static boolean isBefore(int packedTime,
                               int value)

isEqualTo

public static boolean isEqualTo(int packedTime,
                                int value)

AM

public static boolean AM(int packedTime)

Returns true if the time is in the AM or "before noon". Note: we follow the convention that 12:00 NOON is PM and 12 MIDNIGHT is AM

PM

public static boolean PM(int packedTime)

Returns true if the time is in the PM or "after noon". Note: we follow the convention that 12:00 NOON is PM and 12 MIDNIGHT is AM