org.jboss.cache.util
Class Caches.HashKeySelector<T>

java.lang.Object
  org.jboss.cache.util.Caches.HashKeySelector<T>

All Implemented Interfaces:

Caches.ChildSelector<T>

Enclosing class:

Caches

public static class Caches.HashKeySelector<T>
extends Object
implements Caches.ChildSelector<T>

Class that returns a child name to use based on the hash code of a key.

Field Summary

protected int

segments

Constructor Summary

Caches.HashKeySelector(int segments)
Constructs with N segments, where N must be a power of 2.

Method Summary

protected Fqn	childName(int segment) Returns the node name for this segment.
Fqn	childName(T key) Returns the node name for this key.
protected int	segmentFor(T key) Returns the segment for this key, in the inclusive range 0 to segments - 1.
String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

segments

protected int segments

Constructor Detail

Caches.HashKeySelector

public Caches.HashKeySelector(int segments)

Constructs with N segments, where N must be a power of 2.

Parameters:

segments - Number of hash segments

Method Detail

segmentFor

protected final int segmentFor(T key)

Returns the segment for this key, in the inclusive range 0 to segments - 1.

childName

protected final Fqn childName(int segment)

Returns the node name for this segment.

childName

public final Fqn childName(T key)

Returns the node name for this key. By default, returns a String containing the segment.

Specified by:

childName in interface Caches.ChildSelector<T>

Parameters:

key - for calls to Map.put(K, V), Map.get(java.lang.Object) etc.

Returns:

node name

toString

public String toString()

Overrides:

toString in class Object