freenet.support

Class BinaryBloomFilter

java.lang.Object

freenet.support.BloomFilter

freenet.support.BinaryBloomFilter

public class BinaryBloomFilter
extends BloomFilter

Field Summary

Fields inherited from class freenet.support.BloomFilter

filter, forkedFilter, k, length, lock, needRebuild

Constructor Summary

Constructors

Modifier	Constructor and Description
	BinaryBloomFilter(java.nio.ByteBuffer slice, int length, int k)
protected	BinaryBloomFilter(java.io.File file, int length, int k) Constructor
protected	BinaryBloomFilter(int length, int k) Constructor

Method Summary

Modifier and Type	Method and Description
void	fork(int k) Create an empty, in-memory copy of bloom filter.
protected boolean	getBit(int offset)
void	removeKey(byte[] key)
protected void	setBit(int offset)
protected void	unsetBit(int offset)

Methods inherited from class freenet.support.BloomFilter

addKey, addKeyForked, checkFilter, close, copyTo, createFilter, createFilter, discard, finalize, force, getFilledCount, getHashes, getK, getLength, getSizeBytes, init, merge, needRebuild, optimialK, unsetAll, writeTo

Methods inherited from class java.lang.Object

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

Constructor Detail

BinaryBloomFilter

protected BinaryBloomFilter(int length,
                            int k)

Constructor

Parameters:

length - length in bits

BinaryBloomFilter

protected BinaryBloomFilter(java.io.File file,
                            int length,
                            int k)
                     throws java.io.IOException

Constructor

Parameters:

file - disk file

length - length in bits

Throws:

java.io.IOException

BinaryBloomFilter

public BinaryBloomFilter(java.nio.ByteBuffer slice,
                         int length,
                         int k)

Method Detail

removeKey

public void removeKey(byte[] key)

Overrides:

removeKey in class BloomFilter

getBit

protected boolean getBit(int offset)

Specified by:

getBit in class BloomFilter

setBit

protected void setBit(int offset)

Specified by:

setBit in class BloomFilter

unsetBit

protected void unsetBit(int offset)

Specified by:

unsetBit in class BloomFilter

fork

public void fork(int k)

Description copied from class: BloomFilter

Create an empty, in-memory copy of bloom filter. New updates are written to both filters. This is written back to disk on #merge()

Specified by:

fork in class BloomFilter