cn.zhxu.toys.concurrent

类 RedisBloomFilter

java.lang.Object

cn.zhxu.toys.concurrent.AbstractBloomFilter

cn.zhxu.toys.concurrent.RedisBloomFilter

所有已实现的接口:

BloomFilter

public class RedisBloomFilter
extends AbstractBloomFilter

基于 Redis 的布隆过滤器

作者:

Administrator

嵌套类概要

从接口继承的嵌套类/接口 cn.zhxu.toys.concurrent.BloomFilter

BloomFilter.Hasher

构造器概要

构造器

构造器和说明
RedisBloomFilter(int expectedInsertions, double fpp)
RedisBloomFilter(redis.clients.jedis.JedisPool jedisPool, BloomFilter.Hasher hasher, int expectedInsertions, double fpp)
RedisBloomFilter(redis.clients.jedis.JedisPool jedisPool, int expectedInsertions, double fpp)

方法概要

限定符和类型	方法和说明
boolean	checkBitArray(String key, long[] positions) 校验位数组
redis.clients.jedis.JedisPool	getJedisPool()
String	getKeyPrefix()
void	setJedisPool(redis.clients.jedis.JedisPool jedisPool)
void	setKeyPrefix(String keyPrefix)
void	updateBitArray(String key, long[] positions) 更新位数组

从类继承的方法 cn.zhxu.toys.concurrent.AbstractBloomFilter

getHasher, mightContain, optimalNumOfBits, optimalNumOfHashFunctions, put, setHasher

从类继承的方法 java.lang.Object

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

构造器详细资料

RedisBloomFilter

public RedisBloomFilter(int expectedInsertions,
                        double fpp)

参数:

expectedInsertions - 期望插入的个数

fpp - 期望的误判率 （0， 1）

RedisBloomFilter

public RedisBloomFilter(redis.clients.jedis.JedisPool jedisPool,
                        int expectedInsertions,
                        double fpp)

RedisBloomFilter

public RedisBloomFilter(redis.clients.jedis.JedisPool jedisPool,
                        BloomFilter.Hasher hasher,
                        int expectedInsertions,
                        double fpp)

方法详细资料

updateBitArray

public void updateBitArray(String key,
                           long[] positions)

从类复制的说明: AbstractBloomFilter

更新位数组

指定者:

updateBitArray 在类中 AbstractBloomFilter

参数:

key - 键

positions - 位置

checkBitArray

public boolean checkBitArray(String key,
                             long[] positions)

从类复制的说明: AbstractBloomFilter

校验位数组

指定者:

checkBitArray 在类中 AbstractBloomFilter

参数:

key - 键

positions - 位置

返回:

true: 对应的位置是 1， false: 0

getJedisPool

public redis.clients.jedis.JedisPool getJedisPool()

setJedisPool

public void setJedisPool(redis.clients.jedis.JedisPool jedisPool)

getKeyPrefix

public String getKeyPrefix()

setKeyPrefix

public void setKeyPrefix(String keyPrefix)