net.volcanite.util

Class Byte4Key

java.lang.Object

net.volcanite.util.Byte4Key

public final class Byte4Key
extends Object

Key generator for auto-incrementing fixed length 4 byte[] array keys which wrap-around on overflow. Note that the individual bytes in a key must be interpreted as unsigned byte to get the correct lexicographic ordering. The array representation of the underlying int is in big-endian order.

Constructor Summary

Constructors

Constructor and Description
Byte4Key()
Byte4Key(byte[] key) Construct a Byte4Key from a big-endian byte array key.
Byte4Key(int startAt)

Method Summary

Modifier and Type	Method and Description
byte[]	current()
int	currentValue()
void	decrement()
boolean	equals(Object obj)
int	hashCode()
void	increment()
static byte[]	maxKey()
static byte[]	minKey()
int	minus(Byte4Key other)
byte[]	next()
String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

Byte4Key

public Byte4Key()

Byte4Key

public Byte4Key(int startAt)

Byte4Key

public Byte4Key(byte[] key)

Construct a Byte4Key from a big-endian byte array key.

Parameters:

key - array in big-endian representation

Method Detail

minKey

public static byte[] minKey()

maxKey

public static byte[] maxKey()

next

public byte[] next()

current

public byte[] current()

currentValue

public int currentValue()

increment

public void increment()

decrement

public void decrement()

minus

public int minus(Byte4Key other)

toString

public String toString()

Overrides:

toString in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object obj)

Overrides:

equals in class Object