Package org.apache.velocity.runtime.resource

Class ResourceCacheImpl.LRUMap<K,​V>

  • Type Parameters:
    K - The key type of the map.
    V - The value type of the map.
    All Implemented Interfaces:
    java.io.Serializable, java.lang.Cloneable, java.util.Map<K,​V>
    Enclosing class:
    ResourceCacheImpl
    private static class ResourceCacheImpl.LRUMap<K,​V>
extends java.util.LinkedHashMap<K,​V>
    A simple LRU Map based on LinkedHashSet.

    • 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>

    • Field Summary

      Fields 
      Modifier and Type Field Description
      private int cacheSize
      The size of the cache.
      private static long serialVersionUID
      The serial version uid;

    • Constructor Summary

      Constructors 
      Constructor Description
      LRUMap​(int cacheSize)
      Constructor.

    • 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

    • Field Detail

      • serialVersionUID

        private static final long serialVersionUID
        The serial version uid;
        See Also:
        Constant Field Values

      • cacheSize

        private int cacheSize
        The size of the cache.

    • Constructor Detail

      • LRUMap

        public LRUMap​(int cacheSize)
        Constructor.
        Parameters:
        cacheSize - The size of the cache. After reaching this size, the eldest-accessed element will be erased.

    • Method Detail

      • removeEldestEntry

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