Package org.apache.cassandra.utils

Class BloomFilter

java.lang.Object

org.apache.cassandra.utils.concurrent.SharedCloseableImpl

org.apache.cassandra.utils.concurrent.WrappedSharedCloseable

org.apache.cassandra.utils.BloomFilter

All Implemented Interfaces:

AutoCloseable, SharedCloseable, IFilter

public class BloomFilter
extends WrappedSharedCloseable
implements IFilter

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.cassandra.utils.IFilter

IFilter.FilterKey

Field Summary

Fields

Modifier and Type	Field	Description
final IBitSet	bitset
final int	hashCount

Method Summary

Modifier and Type	Method	Description
void	add(IFilter.FilterKey key)
void	addTo(Ref.IdentityCollection identities)
void	clear()
long[]	getHashBuckets(IFilter.FilterKey key, int hashCount, long max)
boolean	isInformative()
final boolean	isPresent(IFilter.FilterKey key)
long	offHeapSize()	Returns the amount of memory in bytes used off heap.
void	serialize(DataOutputStreamPlus out, boolean old)
long	serializedSize(boolean old)
BloomFilter	sharedCopy()
String	toString()

Methods inherited from class org.apache.cassandra.utils.concurrent.SharedCloseableImpl

close, close, isCleanedUp

Methods inherited from class java.lang.Object

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

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

close

Methods inherited from interface org.apache.cassandra.utils.concurrent.SharedCloseable

close

Field Details

bitset

public final IBitSet bitset

hashCount

public final int hashCount

Method Details

serializedSize

public long serializedSize(boolean old)

Specified by:

serializedSize in interface IFilter

serialize

public void serialize(DataOutputStreamPlus out,
 boolean old)
               throws IOException

Specified by:

serialize in interface IFilter

Throws:

IOException

getHashBuckets

public long[] getHashBuckets(IFilter.FilterKey key,
 int hashCount,
 long max)

add

public void add(IFilter.FilterKey key)

Specified by:

add in interface IFilter

isPresent

public final boolean isPresent(IFilter.FilterKey key)

Specified by:

isPresent in interface IFilter

clear

public void clear()

Specified by:

clear in interface IFilter

sharedCopy

public BloomFilter sharedCopy()

Specified by:

sharedCopy in interface IFilter

Specified by:

sharedCopy in interface SharedCloseable

Returns:

a new instance of the object representing the same state and backed by the same underlying resources. Coordinates with the original (and other instances) when the underlying resource should be closed. Throws an exception if the shared resource has already been closed.

offHeapSize

public long offHeapSize()

Description copied from interface: IFilter

Returns the amount of memory in bytes used off heap.

Specified by:

offHeapSize in interface IFilter

Returns:

the amount of memory in bytes used off heap

isInformative

public boolean isInformative()

Specified by:

isInformative in interface IFilter

toString

public String toString()

Overrides:

toString in class Object

addTo

public void addTo(Ref.IdentityCollection identities)

Specified by:

addTo in interface SharedCloseable

Overrides:

addTo in class SharedCloseableImpl