com.optimizely.ab.bucketing.internal

Class MurmurHash3

java.lang.Object

com.optimizely.ab.bucketing.internal.MurmurHash3

public final class MurmurHash3
extends java.lang.Object

Method Summary

Modifier and Type	Method and Description
static int	murmurhash3_x86_32(byte[] data, int offset, int len, int seed)
static int	murmurhash3_x86_32(java.lang.CharSequence data, int offset, int len, int seed) This is more than 2x faster than hashing the result of String.getBytes().

Methods inherited from class java.lang.Object

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

Method Detail

murmurhash3_x86_32

public static int murmurhash3_x86_32(byte[] data,
                                     int offset,
                                     int len,
                                     int seed)

Parameters:

data - the origin data

offset - the offset into the data array

len - the length of the data array to use

seed - the murmur hash seed

Returns:

the MurmurHash3_x86_32 hash

murmurhash3_x86_32

public static int murmurhash3_x86_32(java.lang.CharSequence data,
                                     int offset,
                                     int len,
                                     int seed)

This is more than 2x faster than hashing the result of String.getBytes().

Parameters:

data - the origin data

offset - the offset into the data array

len - the length of the data array to use

seed - the murmur hash seed

Returns:

the MurmurHash3_x86_32 hash of the UTF-8 bytes of the String without actually encoding the string to a temporary buffer