Package org.hcjf.utils

Class LruMap<K,​V>

  • Type Parameters:
    K - Key type.
    V - Value type.
    All Implemented Interfaces:
    java.util.Map<K,​V>
    public class LruMap<K,​V>
extends java.lang.Object
implements java.util.Map<K,​V>
    This map implementation use an algorithm to maintains a fixed size into the map with the elements least recently used (LRU).

    • Nested Class Summary

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

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

    • Constructor Summary

      Constructors 
      Constructor Description
      LruMap()  
      LruMap​(java.lang.Integer maxSize)  

    • Method Summary

      Modifier and Type Method Description
      void clear()  
      V compute​(K key, java.util.function.BiFunction<? super K,​? super V,​? extends V> remappingFunction)  
      V computeIfAbsent​(K key, java.util.function.Function<? super K,​? extends V> mappingFunction)  
      V computeIfPresent​(K key, java.util.function.BiFunction<? super K,​? super V,​? extends V> remappingFunction)  
      boolean containsKey​(java.lang.Object key)  
      boolean containsValue​(java.lang.Object value)  
      java.util.Set<java.util.Map.Entry<K,​V>> entrySet()  
      boolean equals​(java.lang.Object o)  
      void forEach​(java.util.function.BiConsumer<? super K,​? super V> action)  
      V get​(java.lang.Object key)  
      java.lang.Integer getMaxSize()
      Returns the max size of the map.
      V getOrDefault​(java.lang.Object key, V defaultValue)  
      int hashCode()  
      boolean isEmpty()  
      java.util.Set<K> keySet()  
      V merge​(K key, V value, java.util.function.BiFunction<? super V,​? super V,​? extends V> remappingFunction)  
      V put​(K key, V value)  
      void putAll​(java.util.Map<? extends K,​? extends V> m)  
      V putIfAbsent​(K key, V value)  
      V remove​(java.lang.Object key)  
      boolean remove​(java.lang.Object key, java.lang.Object value)  
      V replace​(K key, V value)  
      boolean replace​(K key, V oldValue, V newValue)  
      void replaceAll​(java.util.function.BiFunction<? super K,​? super V,​? extends V> function)  
      void setMaxSize​(java.lang.Integer maxSize)
      Set the max size of the map.
      int size()  
      java.util.Collection<V> values()  

      • Methods inherited from class java.lang.Object

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

    • Constructor Detail

      • LruMap

        public LruMap()

      • LruMap

        public LruMap​(java.lang.Integer maxSize)

    • Method Detail

      • getMaxSize

        public final java.lang.Integer getMaxSize()
        Returns the max size of the map.
        Returns:
        Max size of the map.

      • setMaxSize

        public final void setMaxSize​(java.lang.Integer maxSize)
        Set the max size of the map.
        Parameters:
        maxSize - Max size of the map.

      • size

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

      • isEmpty

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

      • containsKey

        public boolean containsKey​(java.lang.Object key)
        Specified by:
        containsKey in interface java.util.Map<K,​V>

      • containsValue

        public boolean containsValue​(java.lang.Object value)
        Specified by:
        containsValue in interface java.util.Map<K,​V>

      • get

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

      • put

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

      • remove

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

      • putAll

        public void putAll​(java.util.Map<? extends K,​? extends V> m)
        Specified by:
        putAll in interface java.util.Map<K,​V>

      • clear

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

      • keySet

        public java.util.Set<K> keySet()
        Specified by:
        keySet in interface java.util.Map<K,​V>

      • values

        public java.util.Collection<V> values()
        Specified by:
        values in interface java.util.Map<K,​V>

      • entrySet

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

      • equals

        public boolean equals​(java.lang.Object o)
        Specified by:
        equals in interface java.util.Map<K,​V>
        Overrides:
        equals in class java.lang.Object

      • hashCode

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

      • getOrDefault

        public V getOrDefault​(java.lang.Object key,
                      V defaultValue)
        Specified by:
        getOrDefault in interface java.util.Map<K,​V>

      • forEach

        public void forEach​(java.util.function.BiConsumer<? super K,​? super V> action)
        Specified by:
        forEach in interface java.util.Map<K,​V>

      • replaceAll

        public void replaceAll​(java.util.function.BiFunction<? super K,​? super V,​? extends V> function)
        Specified by:
        replaceAll in interface java.util.Map<K,​V>

      • putIfAbsent

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

      • remove

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

      • replace

        public boolean replace​(K key,
                       V oldValue,
                       V newValue)
        Specified by:
        replace in interface java.util.Map<K,​V>

      • replace

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

      • computeIfAbsent

        public V computeIfAbsent​(K key,
                         java.util.function.Function<? super K,​? extends V> mappingFunction)
        Specified by:
        computeIfAbsent in interface java.util.Map<K,​V>

      • computeIfPresent

        public V computeIfPresent​(K key,
                          java.util.function.BiFunction<? super K,​? super V,​? extends V> remappingFunction)
        Specified by:
        computeIfPresent in interface java.util.Map<K,​V>

      • compute

        public V compute​(K key,
                 java.util.function.BiFunction<? super K,​? super V,​? extends V> remappingFunction)
        Specified by:
        compute in interface java.util.Map<K,​V>

      • merge

        public V merge​(K key,
               V value,
               java.util.function.BiFunction<? super V,​? super V,​? extends V> remappingFunction)
        Specified by:
        merge in interface java.util.Map<K,​V>