jadex.commons.collection

Class LRU<K,V>

java.lang.Object

java.util.AbstractMap<K,V>

java.util.HashMap<K,V>

java.util.LinkedHashMap<K,V>

jadex.commons.collection.LRU<K,V>

All Implemented Interfaces:

Serializable, Cloneable, Map<K,V>

public class LRU<K,V>
extends LinkedHashMap<K,V>

A least recently used map.

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class java.util.AbstractMap

AbstractMap.SimpleEntry<K,V>, AbstractMap.SimpleImmutableEntry<K,V>

Constructor Summary

Constructors

Constructor and Description
LRU(int max) Create a new LRU.
LRU(int max, ILRUEntryCleaner cleaner) Create a new LRU.

Method Summary

Methods

Modifier and Type	Method and Description
int	getMaxEntries() Get the maximum number of the
boolean	removeEldestEntry(Map.Entry<K,V> eldest) Remove the eldest entry.
void	setCleaner(ILRUEntryCleaner cleaner) Set the cleaner object.
void	setMaxEntries(int max) Set the maximum number of entries.

Methods inherited from class java.util.LinkedHashMap

clear, containsValue, get

Methods inherited from class java.util.HashMap

clone, containsKey, entrySet, isEmpty, keySet, put, putAll, remove, size, values

Methods inherited from class java.util.AbstractMap

equals, hashCode, toString

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.Map

containsKey, entrySet, equals, hashCode, isEmpty, keySet, put, putAll, remove, size, values

Constructor Detail

LRU

public LRU(int max)

Create a new LRU.

Parameters:

max - The maximum number of entries.

LRU

public LRU(int max,
   ILRUEntryCleaner cleaner)

Create a new LRU.

Parameters:

max - The maximum number of entries.

Method Detail

getMaxEntries

public int getMaxEntries()

Get the maximum number of the

Returns:

The maximum number of entries.

setMaxEntries

public void setMaxEntries(int max)

Set the maximum number of entries.

Parameters:

max - The maximum number of entries.

setCleaner

public void setCleaner(ILRUEntryCleaner cleaner)

Set the cleaner object.

Parameters:

cleaner - The cleaner object.

removeEldestEntry

public boolean removeEldestEntry(Map.Entry<K,V> eldest)

Remove the eldest entry.

Overrides:

removeEldestEntry in class LinkedHashMap<K,V>

Parameters:

eldest - The eldest entry.

Returns:

True if need to be removed.