org.apache.lucene.codecs.bloom

Class HashFunction

java.lang.Object

org.apache.lucene.codecs.bloom.HashFunction

Direct Known Subclasses:

MurmurHash2

public abstract class HashFunction
extends Object

Base class for hashing functions that can be referred to by name. Subclasses are expected to provide threadsafe implementations of the hash function on the range of bytes referenced in the provided BytesRef

Constructor Summary

Constructors

Constructor and Description
HashFunction()

Method Summary

Methods

Modifier and Type	Method and Description
abstract int	hash(BytesRef bytes) Hashes the contents of the referenced bytes

Methods inherited from class java.lang.Object

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

Constructor Detail

HashFunction

public HashFunction()

Method Detail

hash

public abstract int hash(BytesRef bytes)

Hashes the contents of the referenced bytes

Parameters:

bytes - the data to be hashed

Returns:

the hash of the bytes referenced by bytes.offset and length bytes.length