Package org.neo4j.cypherdsl.core.support

Class LRUCache<K,​V>

  • Type Parameters:
    K - Type of the keys
    V - Type of the values
    All Implemented Interfaces:
    java.io.Serializable, java.lang.Cloneable, java.util.Map<K,​V>
    @API(status=INTERNAL,
     since="2021.0.2")
public final class LRUCache<K,​V>
extends java.util.LinkedHashMap<K,​V>
    A non thread safe least recently used (LRU) cache. It must be used with a locking implementation around it.
    Since:
    2021.0.2
    Author:
    Michael J. Simons
    See Also:
    Serialized Form

    • Nested Class Summary

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

        java.util.AbstractMap.SimpleEntry<K extends java.lang.Object,​V extends java.lang.Object>, java.util.AbstractMap.SimpleImmutableEntry<K extends java.lang.Object,​V extends java.lang.Object>

    • Constructor Summary

      Constructors 
      Constructor Description
      LRUCache​(int cacheSize)
      Creates a new LRU cache with the given cache size

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      protected boolean removeEldestEntry​(java.util.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)
        Creates a new LRU cache with the given cache size
        Parameters:
        cacheSize - The number of entries to keep around.

    • Method Detail

      • removeEldestEntry

        protected boolean removeEldestEntry​(java.util.Map.Entry<K,​V> eldest)
        Overrides:
        removeEldestEntry in class java.util.LinkedHashMap<K,​V>