org.apache.hudi.common.util

Class BinaryUtil

java.lang.Object

org.apache.hudi.common.util.BinaryUtil

public class BinaryUtil
extends Object

Utils for Java byte array.

Constructor Summary

Constructors

Constructor and Description
BinaryUtil()

Method Summary

Modifier and Type	Method and Description
static byte[]	byteTo8Byte(byte a)
static int	compareTo(byte[] buffer1, int offset1, int length1, byte[] buffer2, int offset2, int length2) Lexicographically compare two arrays.
static long	convertBytesToLong(byte[] bytes)
static Long	convertStringToLong(String a)
static byte[]	doubleTo8Byte(double a)
static long	generateChecksum(byte[] data) Generate a checksum for a given set of bytes.
static byte[]	interleaving(byte[][] buffer, int size) Interleaving array bytes.
static byte[]	intTo8Byte(int a)
static byte[]	longTo8Byte(long a)
static byte[]	paddingTo8Byte(byte[] a)
static byte[]	toBytes(ByteBuffer buffer) Copies ByteBuffer into allocated byte[] array
static byte[]	toBytes(double d)
static byte[]	toBytes(int val)
static byte[]	toBytes(long val)
static byte	updatePos(byte a, int apos, byte b, int bpos)
static byte[]	utf8To8Byte(String a)

Methods inherited from class java.lang.Object

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

Constructor Detail

BinaryUtil

public BinaryUtil()

Method Detail

compareTo

public static int compareTo(byte[] buffer1,
                            int offset1,
                            int length1,
                            byte[] buffer2,
                            int offset2,
                            int length2)

Lexicographically compare two arrays. copy from hbase

Parameters:

buffer1 - left operand

buffer2 - right operand

offset1 - Where to start comparing in the left buffer

offset2 - Where to start comparing in the right buffer

length1 - How much to compare from the left buffer

length2 - How much to compare from the right buffer

Returns:

0 if equal, < 0 if left is less than right, etc.

paddingTo8Byte

public static byte[] paddingTo8Byte(byte[] a)

interleaving

public static byte[] interleaving(byte[][] buffer,
                                  int size)

Interleaving array bytes. Interleaving means take one bit from the first matrix element, one bit from the next, etc, then take the second bit from the first matrix element, second bit from the second, all the way to the last bit of the last element. Combine those bits in that order into a single BigInteger,

Parameters:

buffer - candidate element to do interleaving

Returns:

byte size of candidate element

updatePos

public static byte updatePos(byte a,
                             int apos,
                             byte b,
                             int bpos)

toBytes

public static byte[] toBytes(ByteBuffer buffer)

Copies ByteBuffer into allocated byte[] array

toBytes

public static byte[] toBytes(int val)

toBytes

public static byte[] toBytes(long val)

toBytes

public static byte[] toBytes(double d)

intTo8Byte

public static byte[] intTo8Byte(int a)

byteTo8Byte

public static byte[] byteTo8Byte(byte a)

longTo8Byte

public static byte[] longTo8Byte(long a)

doubleTo8Byte

public static byte[] doubleTo8Byte(double a)

utf8To8Byte

public static byte[] utf8To8Byte(String a)

convertStringToLong

public static Long convertStringToLong(String a)

convertBytesToLong

public static long convertBytesToLong(byte[] bytes)

generateChecksum

public static long generateChecksum(byte[] data)

Generate a checksum for a given set of bytes.