Class CompositeMap<K,​V>

  • Type Parameters:
    K - Key type
    V - Value type
    All Implemented Interfaces:

    public class CompositeMap<K,​V>
    extends java.lang.Object
    implements java.util.Map<K,​V>
    Unmodifiable view onto multiple backing maps. An element occurs in the map if it occurs in any of the backing maps; the value is the value that occurs in the first map that contains the key.
    • 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>
    • Field Summary

      Modifier and Type Field Description
      private<java.util.Map<K,​V>> maps  
    • Constructor Summary

      Constructor Description
      CompositeMap​(<java.util.Map<K,​V>> maps)  
    • Method Summary

      All Methods Static Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      void clear()  
      private java.util.Map<K,​V> combinedMap()  
      boolean containsKey​(java.lang.Object key)  
      boolean containsValue​(java.lang.Object value)  
      java.util.Set<java.util.Map.Entry<K,​V>> entrySet()  
      V get​(java.lang.Object key)  
      boolean isEmpty()  
      java.util.Set<K> keySet()  
      private static <E><E> list​(E e, E[] es)  
      static <K,​V>
      of​(java.util.Map<K,​V> map0, java.util.Map<K,​V>... maps)
      Creates a CompositeMap.
      V put​(K key, V value)  
      void putAll​(java.util.Map<? extends K,​? extends V> m)  
      V remove​(java.lang.Object key)  
      int size()  
      java.util.Collection<V> values()  
      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
      • Methods inherited from interface java.util.Map

        compute, computeIfAbsent, computeIfPresent, equals, forEach, getOrDefault, hashCode, merge, putIfAbsent, remove, replace, replace, replaceAll
    • Field Detail

      • maps

        private final<java.util.Map<K,​V>> maps
    • Constructor Detail

      • CompositeMap

        public CompositeMap​(<java.util.Map<K,​V>> maps)
    • Method Detail

      • of

        public static <K,​V> CompositeMap<K,​V> of​(java.util.Map<K,​V> map0,
                                                             java.util.Map<K,​V>... maps)
        Creates a CompositeMap.
      • list

        private static <E><E> list​(E e,
                                                                           E[] es)
      • 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>
      • combinedMap

        private java.util.Map<K,​V> combinedMap()
      • 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>