org.apache.cassandra.db

Class AbstractOnHeapClusteringPrefix<V>

java.lang.Object

org.apache.cassandra.db.AbstractOnHeapClusteringPrefix<V>

All Implemented Interfaces:

IMeasurableMemory, Clusterable<V>, ClusteringPrefix<V>

Direct Known Subclasses:

AbstractArrayClusteringPrefix, AbstractBufferClusteringPrefix

public abstract class AbstractOnHeapClusteringPrefix<V>
extends java.lang.Object
implements ClusteringPrefix<V>

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.cassandra.db.ClusteringPrefix

ClusteringPrefix.Deserializer, ClusteringPrefix.Kind, ClusteringPrefix.Serializer

Field Summary

Fields

Modifier and Type	Field and Description
protected ClusteringPrefix.Kind	kind
protected V[]	values

Fields inherited from interface org.apache.cassandra.db.ClusteringPrefix

serializer

Constructor Summary

Constructors

Constructor and Description
AbstractOnHeapClusteringPrefix(ClusteringPrefix.Kind kind, V[] values)

Method Summary

Modifier and Type	Method and Description
ClusteringPrefix<V>	clustering()
boolean	equals(java.lang.Object o)
V	get(int i) Retrieves the ith value of this prefix.
V[]	getRawValues() The values of this prefix as an array.
int	hashCode()
ClusteringPrefix.Kind	kind()
int	size() The number of values in this prefix.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.cassandra.db.ClusteringPrefix

accessor, bufferAt, dataSize, digest, equals, equals, getBufferArray, hashCode, isBottom, isEmpty, isTop, minimize, serializeAsPartitionKey, stringAt, toString, validate

Methods inherited from interface org.apache.cassandra.cache.IMeasurableMemory

unsharedHeapSize

Field Detail

kind

protected final ClusteringPrefix.Kind kind

values

protected final V[] values

Constructor Detail

AbstractOnHeapClusteringPrefix

public AbstractOnHeapClusteringPrefix(ClusteringPrefix.Kind kind,
                                      V[] values)

Method Detail

kind

public ClusteringPrefix.Kind kind()

Specified by:

kind in interface ClusteringPrefix<V>

clustering

public ClusteringPrefix<V> clustering()

Specified by:

clustering in interface Clusterable<V>

size

public int size()

Description copied from interface: ClusteringPrefix

The number of values in this prefix. There can't be more values that the this is a prefix of has of clustering columns.

Specified by:

size in interface ClusteringPrefix<V>

Returns:

the number of values in this prefix.

get

public V get(int i)

Description copied from interface: ClusteringPrefix

Retrieves the ith value of this prefix.

Specified by:

get in interface ClusteringPrefix<V>

Parameters:

i - the index of the value to retrieve. Must be such that 0 <= i < size().

Returns:

the ith value of this prefix. Note that a value can be null.

getRawValues

public V[] getRawValues()

Description copied from interface: ClusteringPrefix

The values of this prefix as an array.

Please note that this may or may not require an array creation. So 1) you should *not* modify the returned array and 2) it's more efficient to use ClusteringPrefix.size() and ClusteringPrefix.get(int) unless you actually need an array.

Specified by:

getRawValues in interface ClusteringPrefix<V>

Returns:

the values for this prefix as an array.

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