com.opensymphony.xwork2.ognl

Class OgnlLRUCache<Key,Value>

java.lang.Object

com.opensymphony.xwork2.ognl.OgnlLRUCache<Key,Value>

Type Parameters:

Key - The type for the cache key entries

Value - The type for the cache value entries

All Implemented Interfaces:

OgnlCache<Key,Value>

public class OgnlLRUCache<Key,Value>
extends Object
implements OgnlCache<Key,Value>

A basic OGNL LRU cache implementation. The implementation utilizes a Collections.synchronizedMap(java.util.Map) backed by a LinkedHashMap. May be replaced by a more efficient implementation in the future. Setting too low an eviction limit will produce more overhead than value. Setting too high an eviction limit may also produce more overhead than value. An appropriate eviction limit will need to be determined on an individual application basis.

Constructor Summary

Constructors

Constructor and Description
OgnlLRUCache(int evictionLimit, int initialCapacity, float loadFactor)

Method Summary

Modifier and Type	Method and Description
void	clear()
Value	get(Key key)
int	getEvictionLimit()
void	put(Key key, Value value)
void	putIfAbsent(Key key, Value value)
void	setEvictionLimit(int cacheEvictionLimit)
int	size()

Methods inherited from class java.lang.Object

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

Constructor Detail

OgnlLRUCache

public OgnlLRUCache(int evictionLimit,
                    int initialCapacity,
                    float loadFactor)

Method Detail

get

public Value get(Key key)

Specified by:

get in interface OgnlCache<Key,Value>

put

public void put(Key key,
                Value value)

Specified by:

put in interface OgnlCache<Key,Value>

putIfAbsent

public void putIfAbsent(Key key,
                        Value value)

Specified by:

putIfAbsent in interface OgnlCache<Key,Value>

size

public int size()

Specified by:

size in interface OgnlCache<Key,Value>

clear

public void clear()

Specified by:

clear in interface OgnlCache<Key,Value>

getEvictionLimit

public int getEvictionLimit()

Specified by:

getEvictionLimit in interface OgnlCache<Key,Value>

setEvictionLimit

public void setEvictionLimit(int cacheEvictionLimit)

Specified by:

setEvictionLimit in interface OgnlCache<Key,Value>