org.apache.karaf.tooling.utils

Class SimpleLRUCache<K,V>

java.lang.Object

java.util.AbstractMap<K,V>

java.util.HashMap<K,V>

java.util.LinkedHashMap<K,V>

org.apache.karaf.tooling.utils.SimpleLRUCache<K,V>

All Implemented Interfaces:

Serializable, Cloneable, Map<K,V>

public final class SimpleLRUCache<K,V>
extends LinkedHashMap<K,V>

A very simplistic LRU cache based on LinkedHashMap. It grows up to the size specified in the constructor, evicting least recently accessed entries to keep the size there.

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
SimpleLRUCache(int maxEntries)
SimpleLRUCache(int initialSize, float loadFactor, int maxEntries)

Method Summary

Modifier and Type	Method and Description
protected boolean	removeEldestEntry(Map.Entry<K,V> eldest)

Methods inherited from class java.util.LinkedHashMap

clear, containsValue, entrySet, forEach, get, getOrDefault, keySet, replaceAll, values

Methods inherited from class java.util.HashMap

clone, compute, computeIfAbsent, computeIfPresent, containsKey, isEmpty, merge, put, putAll, putIfAbsent, remove, remove, replace, replace, size

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

compute, computeIfAbsent, computeIfPresent, containsKey, equals, hashCode, isEmpty, merge, put, putAll, putIfAbsent, remove, remove, replace, replace, size

Constructor Detail

SimpleLRUCache

public SimpleLRUCache(int maxEntries)

SimpleLRUCache

public SimpleLRUCache(int initialSize,
                      float loadFactor,
                      int maxEntries)

Method Detail

removeEldestEntry

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

Overrides:

removeEldestEntry in class LinkedHashMap<K,V>