Class ArrayOfDoublesUpdatableSketch


  • public abstract class ArrayOfDoublesUpdatableSketch
    extends ArrayOfDoublesSketch
    The top level for updatable tuple sketches of type ArrayOfDoubles.
    • Method Detail

      • heapify

        public static ArrayOfDoublesUpdatableSketch heapify​(org.apache.datasketches.memory.Memory mem)
        Heapify the given Memory as an ArrayOfDoublesUpdatableSketch
        Parameters:
        mem - the given Memory
        Returns:
        an ArrayOfDoublesUpdatableSketch
      • heapify

        public static ArrayOfDoublesUpdatableSketch heapify​(org.apache.datasketches.memory.Memory mem,
                                                            long seed)
        Heapify the given Memory and seed as a ArrayOfDoublesUpdatableSketch
        Parameters:
        mem - the given Memory
        seed - the given seed
        Returns:
        an ArrayOfDoublesUpdatableSketch
      • wrap

        public static ArrayOfDoublesUpdatableSketch wrap​(org.apache.datasketches.memory.WritableMemory mem)
        Wrap the given WritableMemory as an ArrayOfDoublesUpdatableSketch
        Parameters:
        mem - the given Memory
        Returns:
        an ArrayOfDoublesUpdatableSketch
      • wrap

        public static ArrayOfDoublesUpdatableSketch wrap​(org.apache.datasketches.memory.WritableMemory mem,
                                                         long seed)
        Wrap the given WritableMemory and seed as a ArrayOfDoublesUpdatableSketch
        Parameters:
        mem - the given Memory
        seed - the given seed
        Returns:
        an ArrayOfDoublesUpdatableSketch
      • update

        public void update​(long key,
                           double[] values)
        Updates this sketch with a long key and double values. The values will be stored or added to the ones associated with the key
        Parameters:
        key - The given long key
        values - The given values
      • update

        public void update​(double key,
                           double[] values)
        Updates this sketch with a double key and double values. The values will be stored or added to the ones associated with the key
        Parameters:
        key - The given double key
        values - The given values
      • update

        public void update​(String key,
                           double[] values)
        Updates this sketch with a String key and double values. The values will be stored or added to the ones associated with the key
        Parameters:
        key - The given String key
        values - The given values
      • update

        public void update​(byte[] key,
                           double[] values)
        Updates this sketch with a byte[] key and double values. The values will be stored or added to the ones associated with the key
        Parameters:
        key - The given byte[] key
        values - The given values
      • update

        public void update​(ByteBuffer key,
                           double[] values)
        Updates this sketch with a ByteBuffer key and double values. The values will be stored or added to the ones associated with the key
        Parameters:
        key - The given ByteBuffer key
        values - The given values
      • update

        public void update​(int[] key,
                           double[] values)
        Updates this sketch with a int[] key and double values. The values will be stored or added to the ones associated with the key
        Parameters:
        key - The given int[] key
        values - The given values
      • update

        public void update​(long[] key,
                           double[] values)
        Updates this sketch with a long[] key and double values. The values will be stored or added to the ones associated with the key
        Parameters:
        key - The given long[] key
        values - The given values
      • getNominalEntries

        public abstract int getNominalEntries()
        Gets the configured nominal number of entries
        Returns:
        nominal number of entries
      • getResizeFactor

        public abstract ResizeFactor getResizeFactor()
        Gets the configured resize factor
        Returns:
        resize factor
      • getSamplingProbability

        public abstract float getSamplingProbability()
        Gets the configured sampling probability
        Returns:
        sampling probability
      • trim

        public abstract void trim()
        Rebuilds reducing the actual number of entries to the nominal number of entries if needed
      • reset

        public abstract void reset()
        Resets this sketch an empty state.
      • compact

        public ArrayOfDoublesCompactSketch compact​(org.apache.datasketches.memory.WritableMemory dstMem)
        Gets an off-heap compact representation of the sketch using the given memory
        Specified by:
        compact in class ArrayOfDoublesSketch
        Parameters:
        dstMem - memory for the compact sketch (can be null)
        Returns:
        compact sketch (off-heap if memory is provided)