Package org.apache.velocity.runtime.resource

Class ResourceCacheImpl.LRUMap<K,V>

java.lang.Object

java.util.AbstractMap<K,V>

java.util.HashMap<K,V>

java.util.LinkedHashMap<K,V>

org.apache.velocity.runtime.resource.ResourceCacheImpl.LRUMap<K,V>

Type Parameters:

K - The key type of the map.

V - The value type of the map.

All Implemented Interfaces:

Serializable, Cloneable, Map<K,V>, SequencedMap<K,V>

Enclosing class:

ResourceCacheImpl

private static class ResourceCacheImpl.LRUMap<K,V>
extends LinkedHashMap<K,V>

A simple LRU Map based on LinkedHashSet.

Nested Class Summary

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

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

Field Summary

Fields

Modifier and Type	Field	Description
private int	cacheSize	The size of the cache.
private static final long	serialVersionUID	The serial version uid;

Constructor Summary

Constructors

Constructor	Description
LRUMap(int cacheSize)	Constructor.

Method Summary

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

Methods inherited from class java.util.LinkedHashMap

clear, containsValue, entrySet, forEach, get, getOrDefault, keySet, newLinkedHashMap, putFirst, putLast, replaceAll, reversed, sequencedEntrySet, sequencedKeySet, sequencedValues, values

Methods inherited from class java.util.HashMap

clone, compute, computeIfAbsent, computeIfPresent, containsKey, isEmpty, merge, newHashMap, 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

Methods inherited from interface java.util.SequencedMap

firstEntry, lastEntry, pollFirstEntry, pollLastEntry

Field Details

serialVersionUID

private static final long serialVersionUID

The serial version uid;

See Also:

• Constant Field Values

cacheSize

private int cacheSize

The size of the cache.

Constructor Details

LRUMap

public LRUMap(int cacheSize)

Constructor.

Parameters:

cacheSize - The size of the cache. After reaching this size, the eldest-accessed element will be erased.

Method Details

removeEldestEntry

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

Overrides:

removeEldestEntry in class LinkedHashMap<K,V>