de.pangaea.metadataportal.utils
Class LRUMap<K,V>

java.lang.Object
  java.util.AbstractMap<K,V>
      java.util.HashMap<K,V>
          java.util.LinkedHashMap<K,V>
              de.pangaea.metadataportal.utils.LRUMap<K,V>

All Implemented Interfaces:

Serializable, Cloneable, Map<K,V>

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

Simple LRUMap based on LinkedHashMap. The maximum size is given in constructor, the eldest entry (not accessed for the longest time) is removed.

Author:

Uwe Schindler

See Also:

Serialized Form

Field Summary

protected int

maxSize

Constructor Summary

LRUMap(int maxSize)
Creates the LRUMap using the given size as maximum entry count.

Method Summary

protected boolean

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

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

finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.Map

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

Field Detail

maxSize

protected int maxSize

Constructor Detail

LRUMap

public LRUMap(int maxSize)

Creates the LRUMap using the given size as maximum entry count.

Method Detail

removeEldestEntry

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

Overrides:

removeEldestEntry in class LinkedHashMap<K,V>