org.apache.ignite.ml.util

Class LRUCache<K,V>

java.lang.Object

java.util.AbstractMap<K,V>

java.util.HashMap<K,V>

java.util.LinkedHashMap<K,V>

org.apache.ignite.ml.util.LRUCache<K,V>

Type Parameters:

K - Type of a key.

V - Type of a value.

All Implemented Interfaces:

Serializable, Cloneable, Map<K,V>

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

LRU cache with fixed size and expiration listener.

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
LRUCache(int cacheSize) Constructs a new instance of LRU cache.
LRUCache(int cacheSize, LRUCacheExpirationListener<V> expirationLsnr) Constructs a new instance of LRU cache.

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

LRUCache

public LRUCache(int cacheSize)

Constructs a new instance of LRU cache.

Parameters:

cacheSize - Cache size.

LRUCache

public LRUCache(int cacheSize,
                LRUCacheExpirationListener<V> expirationLsnr)

Constructs a new instance of LRU cache.

Parameters:

cacheSize - Cache size.

expirationLsnr - Expiration listener.

Method Detail

removeEldestEntry

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

Overrides:

removeEldestEntry in class LinkedHashMap<K,V>