freenet.support

Class CountingBloomFilter

java.lang.Object

freenet.support.BloomFilter

freenet.support.CountingBloomFilter

public class CountingBloomFilter
extends BloomFilter

Field Summary

Fields inherited from class freenet.support.BloomFilter

filter, forkedFilter, k, length, lock, needRebuild

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	CountingBloomFilter(java.io.File file, int length, int k) Constructor
	CountingBloomFilter(int length, int k) Constructor
	CountingBloomFilter(int length, int k, byte[] buffer)

Method Summary

Modifier and Type	Method and Description
void	fork(int k) Create an empty, in-memory copy of bloom filter.
boolean	getBit(int offset)
void	setBit(int offset)
void	setWarnOnRemoveFromEmpty()
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, removeKey, unsetAll, writeTo

Methods inherited from class java.lang.Object

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

Constructor Detail

CountingBloomFilter

public CountingBloomFilter(int length,
                           int k)

Constructor

Parameters:

length - length in bits

CountingBloomFilter

protected CountingBloomFilter(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

CountingBloomFilter

public CountingBloomFilter(int length,
                           int k,
                           byte[] buffer)

Method Detail

setWarnOnRemoveFromEmpty

public void setWarnOnRemoveFromEmpty()

getBit

public boolean getBit(int offset)

Specified by:

getBit in class BloomFilter

setBit

public void setBit(int offset)

Specified by:

setBit in class BloomFilter

unsetBit

public 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