org.apache.cassandra.utils

Class BloomFilter

java.lang.Object

org.apache.cassandra.utils.BloomFilter

All Implemented Interfaces:

java.io.Closeable, java.lang.AutoCloseable, IFilter

Direct Known Subclasses:

Murmur3BloomFilter

public abstract class BloomFilter
extends java.lang.Object
implements IFilter

Field Summary

Fields

Modifier and Type	Field and Description
IBitSet	bitset
int	hashCount

Method Summary

Methods

Modifier and Type	Method and Description
void	add(java.nio.ByteBuffer key)
void	clear()
void	close()
long[]	getHashBuckets(java.nio.ByteBuffer key, int hashCount, long max)
protected abstract void	hash(java.nio.ByteBuffer b, int position, int remaining, long seed, long[] result)
boolean	isPresent(java.nio.ByteBuffer key)

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.cassandra.utils.IFilter

serializedSize

Field Detail

bitset

public final IBitSet bitset

hashCount

public final int hashCount

Method Detail

hash

protected abstract void hash(java.nio.ByteBuffer b,
        int position,
        int remaining,
        long seed,
        long[] result)

getHashBuckets

public long[] getHashBuckets(java.nio.ByteBuffer key,
                    int hashCount,
                    long max)

add

public void add(java.nio.ByteBuffer key)

Specified by:

add in interface IFilter

isPresent

public final boolean isPresent(java.nio.ByteBuffer key)

Specified by:

isPresent in interface IFilter

clear

public void clear()

Specified by:

clear in interface IFilter

close

public void close()
           throws java.io.IOException

Specified by:

close in interface java.io.Closeable

Specified by:

close in interface java.lang.AutoCloseable

Throws:

java.io.IOException