Package org.apfloat

Class ConcurrentWeakHashMap<K,​V>

  • All Implemented Interfaces:
    java.util.Map<K,​V>
    class ConcurrentWeakHashMap<K,​V>
extends java.util.AbstractMap<K,​V>
    Combination of WeakHashMap and ConcurrentHashMap, providing weak keys and non-blocking access.
    Since:
    1.5
    Version:
    1.9.0

    • Nested Class Summary

      Nested Classes 
      Modifier and Type Class Description
      private static class  ConcurrentWeakHashMap.Key  

      • 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>

      • Nested classes/interfaces inherited from interface java.util.Map

        java.util.Map.Entry<K extends java.lang.Object,​V extends java.lang.Object>

    • Field Summary

      Fields 
      Modifier and Type Field Description
      private java.util.concurrent.ConcurrentHashMap<ConcurrentWeakHashMap.Key,​V> map  
      private java.lang.ref.ReferenceQueue<java.lang.Object> queue  

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      void clear()  
      java.util.Set<java.util.Map.Entry<K,​V>> entrySet()  
      private void expungeStaleEntries()  
      V get​(java.lang.Object key)  
      boolean isEmpty()  
      V put​(K key, V value)  
      V remove​(java.lang.Object key)  
      int size()  
      private ConcurrentWeakHashMap.Key wrap​(java.lang.Object key)  

      • Methods inherited from class java.util.AbstractMap

        clone, containsKey, containsValue, equals, hashCode, keySet, putAll, toString, values

      • Methods inherited from class java.lang.Object

        finalize, getClass, notify, notifyAll, wait, wait, wait

      • Methods inherited from interface java.util.Map

        compute, computeIfAbsent, computeIfPresent, forEach, getOrDefault, merge, putIfAbsent, remove, replace, replace, replaceAll

    • Field Detail

      • queue

        private java.lang.ref.ReferenceQueue<java.lang.Object> queue

    • Constructor Detail

      • ConcurrentWeakHashMap

        public ConcurrentWeakHashMap()

    • Method Detail

      • clear

        public void clear()
        Specified by:
        clear in interface java.util.Map<K,​V>
        Overrides:
        clear in class java.util.AbstractMap<K,​V>

      • entrySet

        public java.util.Set<java.util.Map.Entry<K,​V>> entrySet()
        Specified by:
        entrySet in interface java.util.Map<K,​V>
        Specified by:
        entrySet in class java.util.AbstractMap<K,​V>

      • get

        public V get​(java.lang.Object key)
        Specified by:
        get in interface java.util.Map<K,​V>
        Overrides:
        get in class java.util.AbstractMap<K,​V>

      • put

        public V put​(K key,
             V value)
        Specified by:
        put in interface java.util.Map<K,​V>
        Overrides:
        put in class java.util.AbstractMap<K,​V>

      • remove

        public V remove​(java.lang.Object key)
        Specified by:
        remove in interface java.util.Map<K,​V>
        Overrides:
        remove in class java.util.AbstractMap<K,​V>

      • isEmpty

        public boolean isEmpty()
        Specified by:
        isEmpty in interface java.util.Map<K,​V>
        Overrides:
        isEmpty in class java.util.AbstractMap<K,​V>

      • size

        public int size()
        Specified by:
        size in interface java.util.Map<K,​V>
        Overrides:
        size in class java.util.AbstractMap<K,​V>

      • expungeStaleEntries

        private void expungeStaleEntries()