org.oakgp.util

Class CacheMap<K,V>

java.lang.Object

java.util.AbstractMap<K,V>

java.util.HashMap<K,V>

java.util.LinkedHashMap<K,V>

org.oakgp.util.CacheMap<K,V>

Type Parameters:

K - the type of keys maintained by this map

V - the type of mapped values

All Implemented Interfaces:

Serializable, Cloneable, Map<K,V>

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

Provides a size-limited map of keys to values.

When the maximum size limit has been reached, the least-recently accessed entry will be removed whenever a new entry is added.

See Also:

Serialized Form

Nested Class Summary

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

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

Method Summary

Modifier and Type	Method and Description
static <K,V> Map<K,V>	createCache(int maxSize) Returns a size-limited map of keys to values.
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

Method Detail

createCache

public static <K,V> Map<K,V> createCache(int maxSize)

Returns a size-limited map of keys to values.

Type Parameters:

K - the type of keys maintained by this map

V - the type of mapped values

Parameters:

maxSize - the maximum size restriction to enforce on the returned map

Returns:

a size-limited map of keys to values

removeEldestEntry

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

Overrides:

removeEldestEntry in class LinkedHashMap<K,V>