org.elasticsearch.common.bloom
Class BloomFilterFactory

java.lang.Object
  org.elasticsearch.common.bloom.BloomFilterFactory

public class BloomFilterFactory
extends Object

Constructor Summary

BloomFilterFactory()

Method Summary

static BloomFilter	getFilter(long numElements, double maxFalsePosProbability)
static BloomFilter	getFilter(long numElements, int targetBucketsPerElem)
static void	main(String[] args)

Methods inherited from class java.lang.Object

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

Constructor Detail

BloomFilterFactory

public BloomFilterFactory()

Method Detail

getFilter

public static BloomFilter getFilter(long numElements,
                                    int targetBucketsPerElem)

Returns:

A BloomFilter with the lowest practical false positive probability for the given number of elements.

getFilter

public static BloomFilter getFilter(long numElements,
                                    double maxFalsePosProbability)

Returns:

The smallest BloomFilter that can provide the given false positive probability rate for the given number of elements.

Asserts that the given probability can be satisfied using this filter.

main

public static void main(String[] args)
                 throws UnsupportedEncodingException

Throws:

UnsupportedEncodingException