Package org.codehaus.groovy.runtime.memoize

Class LRUCache<K,​V>

  • All Implemented Interfaces:
    MemoizeCache<K,​V>
    @ThreadSafe
public final class LRUCache<K,​V>
extends java.lang.Object
implements MemoizeCache<K,​V>
    A cache backed by a ConcurrentLinkedHashMap

    • Constructor Summary

      Constructors 
      Constructor Description
      LRUCache​(int maxCacheSize)  

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      void cleanUpNullReferences()
      Remove all entries holding SoftReferences to gc-evicted objects.
      V get​(K key)
      Gets a value from the cache
      V getAndPut​(K key, MemoizeCache.ValueProvider<? super K,​? extends V> valueProvider)
      The implementation of `getAndPut` is not atomic
      V put​(K key, V value)
      Associates the specified value with the specified key in the cache.

      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

    • Constructor Detail

      • LRUCache

        public LRUCache​(int maxCacheSize)

    • Method Detail

      • put

        public V put​(K key,
             V value)
        Description copied from interface: MemoizeCache
        Associates the specified value with the specified key in the cache.
        Specified by:
        put in interface MemoizeCache<K,​V>
        Parameters:
        key - key with which the specified value is to be associated
        value - value to be associated with the specified key
        Returns:
        null, or the old value if the key associated with the specified key.

      • get

        public V get​(K key)
        Description copied from interface: MemoizeCache
        Gets a value from the cache
        Specified by:
        get in interface MemoizeCache<K,​V>
        Parameters:
        key - the key whose associated value is to be returned
        Returns:
        the value, or null, if it does not exist.

      • cleanUpNullReferences

        public void cleanUpNullReferences()
        Remove all entries holding SoftReferences to gc-evicted objects.
        Specified by:
        cleanUpNullReferences in interface MemoizeCache<K,​V>