org.apache.pig.impl.bloom

Class Hash

java.lang.Object

org.apache.pig.impl.bloom.Hash

Direct Known Subclasses:

JenkinsHash, KirschMitzenmacherHash, Murmur3Hash

public abstract class Hash
extends java.lang.Object

Field Summary

Fields

Modifier and Type	Field and Description
static int	JENKINS
static int	MURMUR
static int	MURMUR3
static int	MURMUR3KM

Constructor Summary

Constructors

Constructor and Description
Hash()

Method Summary

Modifier and Type	Method and Description
static Hash	getInstance(int hashType)
abstract int[]	hash(byte[] bytes, int maxValue, int nbHash)
static int	parseHashType(java.lang.String hashType)

Methods inherited from class java.lang.Object

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

Field Detail

MURMUR

public static final int MURMUR

See Also:

Constant Field Values

MURMUR3

public static final int MURMUR3

See Also:

Constant Field Values

MURMUR3KM

public static final int MURMUR3KM

See Also:

Constant Field Values

JENKINS

public static final int JENKINS

See Also:

Constant Field Values

Constructor Detail

Hash

public Hash()

Method Detail

parseHashType

public static int parseHashType(java.lang.String hashType)

getInstance

public static Hash getInstance(int hashType)

hash

public abstract int[] hash(byte[] bytes,
                           int maxValue,
                           int nbHash)

Parameters:

bytes -

maxValue - The maximum hashed value

nbHash - The number of hashed values

Returns: