Class HashContainers


  • class HashContainers
    extends java.lang.Object
    Constants for primitive maps.
    • Field Summary

      Fields 
      Modifier and Type Field Description
      (package private) static int DEFAULT_EXPECTED_ELEMENTS  
      (package private) static float DEFAULT_LOAD_FACTOR  
      (package private) static java.util.concurrent.atomic.AtomicInteger ITERATION_SEED  
      (package private) static int MAX_HASH_ARRAY_LENGTH
      Maximum array size for hash containers (power-of-two and still allocable in Java, not a negative int).
      (package private) static float MAX_LOAD_FACTOR
      Maximum sane load factor (1 empty slot per 100).
      (package private) static int MIN_HASH_ARRAY_LENGTH
      Minimum hash buffer size.
      (package private) static float MIN_LOAD_FACTOR
      Minimal sane load factor (99 empty slots per 100).
    • Constructor Summary

      Constructors 
      Constructor Description
      HashContainers()  
    • Method Summary

      All Methods Static Methods Concrete Methods 
      Modifier and Type Method Description
      (package private) static void checkLoadFactor​(double loadFactor, double minAllowedInclusive, double maxAllowedInclusive)  
      (package private) static boolean checkPowerOfTwo​(int arraySize)  
      (package private) static int expandAtCount​(int arraySize, double loadFactor)  
      (package private) static int iterationIncrement​(int seed)  
      (package private) static int minBufferSize​(int elements, double loadFactor)  
      (package private) static int nextBufferSize​(int arraySize, int elements, double loadFactor)  
      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
    • Field Detail

      • MIN_LOAD_FACTOR

        static final float MIN_LOAD_FACTOR
        Minimal sane load factor (99 empty slots per 100).
        See Also:
        Constant Field Values
      • MAX_LOAD_FACTOR

        static final float MAX_LOAD_FACTOR
        Maximum sane load factor (1 empty slot per 100).
        See Also:
        Constant Field Values
      • MIN_HASH_ARRAY_LENGTH

        static final int MIN_HASH_ARRAY_LENGTH
        Minimum hash buffer size.
        See Also:
        Constant Field Values
      • MAX_HASH_ARRAY_LENGTH

        static final int MAX_HASH_ARRAY_LENGTH
        Maximum array size for hash containers (power-of-two and still allocable in Java, not a negative int).
        See Also:
        Constant Field Values
      • ITERATION_SEED

        static final java.util.concurrent.atomic.AtomicInteger ITERATION_SEED
    • Constructor Detail

      • HashContainers

        HashContainers()
    • Method Detail

      • iterationIncrement

        static int iterationIncrement​(int seed)
      • nextBufferSize

        static int nextBufferSize​(int arraySize,
                                  int elements,
                                  double loadFactor)
      • expandAtCount

        static int expandAtCount​(int arraySize,
                                 double loadFactor)
      • checkPowerOfTwo

        static boolean checkPowerOfTwo​(int arraySize)
      • minBufferSize

        static int minBufferSize​(int elements,
                                 double loadFactor)
      • checkLoadFactor

        static void checkLoadFactor​(double loadFactor,
                                    double minAllowedInclusive,
                                    double maxAllowedInclusive)