org.apache.cassandra.cache

Class CounterCacheKey

java.lang.Object

org.apache.cassandra.cache.CounterCacheKey

All Implemented Interfaces:

CacheKey, IMeasurableMemory

public class CounterCacheKey
extends java.lang.Object
implements CacheKey

Field Summary

Fields

Modifier and Type	Field and Description
byte[]	cellName
java.util.UUID	cfId
byte[]	partitionKey

Constructor Summary

Constructors

Constructor and Description
CounterCacheKey(java.util.UUID cfId, java.nio.ByteBuffer partitionKey, java.nio.ByteBuffer cellName)

Method Summary

Modifier and Type	Method and Description
static CounterCacheKey	create(java.util.UUID cfId, java.nio.ByteBuffer partitionKey, Clustering clustering, ColumnDefinition c, CellPath path)
boolean	equals(java.lang.Object o)
java.util.UUID	getCFId()
int	hashCode()
java.lang.String	toString()
long	unsharedHeapSize()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

cfId

public final java.util.UUID cfId

partitionKey

public final byte[] partitionKey

cellName

public final byte[] cellName

Constructor Detail

CounterCacheKey

public CounterCacheKey(java.util.UUID cfId,
                       java.nio.ByteBuffer partitionKey,
                       java.nio.ByteBuffer cellName)

Method Detail

create

public static CounterCacheKey create(java.util.UUID cfId,
                                     java.nio.ByteBuffer partitionKey,
                                     Clustering clustering,
                                     ColumnDefinition c,
                                     CellPath path)

getCFId

public java.util.UUID getCFId()

Specified by:

getCFId in interface CacheKey

Returns:

The cf id of the cache key.

unsharedHeapSize

public long unsharedHeapSize()

Specified by:

unsharedHeapSize in interface IMeasurableMemory

Returns:

the amount of on-heap memory retained by the object that might be reclaimed if the object were reclaimed, i.e. it should try to exclude globally cached data where possible, or counting portions of arrays that are referenced by the object but used by other objects only (e.g. slabbed byte-buffers), etc.

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

equals

public boolean equals(java.lang.Object o)

Overrides:

equals in class java.lang.Object