Package com.pnfsoftware.jeb.util.collect

Class CacheMap<K,V>

java.lang.Object

com.pnfsoftware.jeb.util.collect.CacheMap<K,V>

public class CacheMap<K,V>
extends Object

A simple CacheMap, with optional support for cached entries ordering.

Constructor Summary

Constructors

Constructor	Description
CacheMap(int maxSize)	Construct a cache map with an eviction size equals to 25% of the cache size.
CacheMap(int maxSize, int evictSize)	Construct a cache map.
CacheMap(int maxSize, int evictSize, boolean ordered)	Construct a cache map.

Method Summary

Modifier and Type	Method	Description
void	clear()
boolean	containsKey(K key)
V	get(K key)
V	put(K key, V val)
V	remove(K key)
void	removeRange(K fromKey, K toKey)
int	size()

Methods inherited from class java.lang.Object

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

Constructor Details

CacheMap

public CacheMap(int maxSize,
 int evictSize,
 boolean ordered)

Construct a cache map. Whenever an element is added and the map exceeds the maximum size, it will be partially cleaned up by evicting the last accessed objects.

Parameters:

maxSize - maximum size of the cache map

evictSize - number of objects evicted during a partial cache cleanup

ordered - true to naturally order elements in the map

CacheMap

public CacheMap(int maxSize,
 int evictSize)

Construct a cache map. Whenever an element is added and the map exceeds the maximum size, it will be partially cleaned up by evicting the last accessed objects.

Parameters:

maxSize - maximum size of the cache map

evictSize - number of objects evicted during a partial cache cleanup

CacheMap

public CacheMap(int maxSize)

Construct a cache map with an eviction size equals to 25% of the cache size.

Parameters:

maxSize - maximum size of the map

Method Details

size

public int size()

clear

public void clear()

put

public V put(K key,
 V val)

get

public V get(K key)

containsKey

public boolean containsKey(K key)

remove

public V remove(K key)

removeRange

public void removeRange(K fromKey,
 K toKey)