Class LongDataType

  • All Implemented Interfaces:
    java.util.Comparator<java.lang.Long>, DataType<java.lang.Long>

    public class LongDataType
    extends BasicDataType<java.lang.Long>
    Class LongDataType.
    • 8/21/17 6:52 PM initial creation
    • Constructor Summary

      Constructors 
      Modifier Constructor Description
      private LongDataType()  
    • Method Summary

      All Methods Static Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      private static int binarySearch​(long key, java.lang.Long[] storage, int low, int high, int x)  
      int binarySearch​(java.lang.Long keyObj, java.lang.Object storageObj, int size, int initialGuess)
      Perform binary search for the key within the storage
      int compare​(java.lang.Long one, java.lang.Long two)
      Compare two keys.
      java.lang.Long[] createStorage​(int size)
      Create storage object of array type to hold values
      int getMemory​(java.lang.Long obj)
      Calculates the amount of used memory in bytes.
      java.lang.Long read​(java.nio.ByteBuffer buff)
      Read an object.
      void write​(WriteBuffer buff, java.lang.Long data)
      Write an object.
      • Methods inherited from class java.lang.Object

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

        reversed, thenComparing, thenComparing, thenComparing, thenComparingDouble, thenComparingInt, thenComparingLong
    • Field Detail

      • EMPTY_LONG_ARR

        private static final java.lang.Long[] EMPTY_LONG_ARR
    • Constructor Detail

      • LongDataType

        private LongDataType()
    • Method Detail

      • getMemory

        public int getMemory​(java.lang.Long obj)
        Description copied from interface: DataType
        Calculates the amount of used memory in bytes.
        Specified by:
        getMemory in interface DataType<java.lang.Long>
        Specified by:
        getMemory in class BasicDataType<java.lang.Long>
        Parameters:
        obj - the object
        Returns:
        the used memory
      • write

        public void write​(WriteBuffer buff,
                          java.lang.Long data)
        Description copied from interface: DataType
        Write an object.
        Specified by:
        write in interface DataType<java.lang.Long>
        Specified by:
        write in class BasicDataType<java.lang.Long>
        Parameters:
        buff - the target buffer
        data - the value
      • read

        public java.lang.Long read​(java.nio.ByteBuffer buff)
        Description copied from interface: DataType
        Read an object.
        Specified by:
        read in interface DataType<java.lang.Long>
        Specified by:
        read in class BasicDataType<java.lang.Long>
        Parameters:
        buff - the source buffer
        Returns:
        the object
      • createStorage

        public java.lang.Long[] createStorage​(int size)
        Description copied from interface: DataType
        Create storage object of array type to hold values
        Parameters:
        size - number of values to hold
        Returns:
        storage object
      • compare

        public int compare​(java.lang.Long one,
                           java.lang.Long two)
        Description copied from interface: DataType
        Compare two keys.
        Specified by:
        compare in interface java.util.Comparator<java.lang.Long>
        Specified by:
        compare in interface DataType<java.lang.Long>
        Overrides:
        compare in class BasicDataType<java.lang.Long>
        Parameters:
        one - the first key
        two - the second key
        Returns:
        -1 if the first key is smaller, 1 if larger, and 0 if equal
      • binarySearch

        public int binarySearch​(java.lang.Long keyObj,
                                java.lang.Object storageObj,
                                int size,
                                int initialGuess)
        Description copied from interface: DataType
        Perform binary search for the key within the storage
        Specified by:
        binarySearch in interface DataType<java.lang.Long>
        Overrides:
        binarySearch in class BasicDataType<java.lang.Long>
        Parameters:
        keyObj - to search for
        storageObj - to search within (an array of type T)
        size - number of data items in the storage
        initialGuess - for key position
        Returns:
        index of the key , if found, - index of the insertion point, if not
      • binarySearch

        private static int binarySearch​(long key,
                                        java.lang.Long[] storage,
                                        int low,
                                        int high,
                                        int x)