org.elasticsearch.common
Class Bytes

java.lang.Object
  org.elasticsearch.common.Bytes

public class Bytes
extends Object

Field Summary

static byte[]

EMPTY_ARRAY

Constructor Summary

Bytes()

Method Summary

static int	atoi(byte[] s)
static long	atol(byte[] s)
static byte[]	itoa(int i) Blatant copy of Integer.toString, but returning a byte array instead of a String, as string charset decoding/encoding was killing us on performance.
static byte[]	ltoa(long i)
static int	oversize(int minTargetSize, int bytesPerElement) Returns an array size >= minTargetSize, generally over-allocating exponentially to achieve amortized linear-time cost as the array grows.

Methods inherited from class java.lang.Object

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

Field Detail

EMPTY_ARRAY

public static final byte[] EMPTY_ARRAY

Constructor Detail

Bytes

public Bytes()

Method Detail

oversize

public static int oversize(int minTargetSize,
                           int bytesPerElement)

Returns an array size >= minTargetSize, generally over-allocating exponentially to achieve amortized linear-time cost as the array grows.

NOTE: this was originally borrowed from Python 2.4.2 listobject.c sources (attribution in LICENSE.txt), but has now been substantially changed based on discussions from java-dev thread with subject "Dynamic array reallocation algorithms", started on Jan 12 2010.

Parameters:

minTargetSize - Minimum required value to be returned.

bytesPerElement - Bytes used by each element of the array. See constants in RamUsageEstimator.

itoa

public static byte[] itoa(int i)

Blatant copy of Integer.toString, but returning a byte array instead of a String, as string charset decoding/encoding was killing us on performance.

Parameters:

i - integer to convert

Returns:

byte[] array containing literal ASCII char representation

atoi

public static int atoi(byte[] s)
                throws NumberFormatException

Throws:

NumberFormatException

ltoa

public static byte[] ltoa(long i)

atol

public static long atol(byte[] s)
                 throws NumberFormatException

Throws:

NumberFormatException