Package org.hibernate.util

Class LRUMap

java.lang.Object

java.util.AbstractMap

java.util.HashMap

java.util.LinkedHashMap

org.hibernate.util.LRUMap

All Implemented Interfaces:

Serializable, Cloneable, Map, SequencedMap

public class LRUMap
extends LinkedHashMap
implements Serializable

A simple LRU cache that implements the Map interface. Instances are not thread-safe and should be synchronized externally, for instance by using Collections.synchronizedMap(java.util.Map<K, V>).

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	Description
LRUMap(int maxEntries)

Method Summary

Modifier and Type	Method	Description
protected boolean	removeEldestEntry(Map.Entry 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

Constructor Details

LRUMap

public LRUMap(int maxEntries)

Method Details

removeEldestEntry

protected boolean removeEldestEntry(Map.Entry eldest)

Overrides:

removeEldestEntry in class LinkedHashMap