org.rdfhdt.hdt.compact.integer

Class VByte

java.lang.Object

org.rdfhdt.hdt.compact.integer.VByte

public class VByte
extends Object

Typical implementation of Variable-Byte encoding for integers. http://nlp.stanford.edu/IR-book/html/htmledition/variable-byte-codes-1.html The first bit of each byte specifies whether there are more bytes available. Numbers from 0 to 126 are encoded using just one byte. Numbers from 127 to 16383 are encoded using two bytes. Numbers from 16384 to 2097151 are encoded using three bytes.

Author:

mario.arias

Method Summary

Modifier and Type	Method and Description
static int	decode(byte[] data, int offset, Mutable<Long> value)
static long	decode(ByteBuffer in)
static long	decode(InputStream in)
static int	encode(byte[] data, int offset, int value)
static void	encode(OutputStream out, long value)
static void	show(byte[] data, int len)

Methods inherited from class java.lang.Object

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

Method Detail

encode

public static void encode(OutputStream out,
                          long value)
                   throws IOException

Throws:

IOException

decode

public static long decode(InputStream in)
                   throws IOException

Throws:

IOException

decode

public static long decode(ByteBuffer in)
                   throws IOException

Throws:

IOException

encode

public static int encode(byte[] data,
                         int offset,
                         int value)

decode

public static int decode(byte[] data,
                         int offset,
                         Mutable<Long> value)

show

public static void show(byte[] data,
                        int len)