com.yahoo.sketches.tuple

Class Sketches

java.lang.Object

com.yahoo.sketches.tuple.Sketches

public final class Sketches
extends Object

Convenient static methods to instantiate generic tuple sketches.

Constructor Summary

Constructors

Constructor and Description
Sketches()

Method Summary

Modifier and Type	Method and Description
static <S extends Summary> Sketch<S>	createEmptySketch()
static <S extends Summary> Sketch<S>	heapifySketch(Memory mem) Instantiate Sketch from a given Memory
static <U,S extends UpdatableSummary<U>> UpdatableSketch<U,S>	heapifyUpdatableSketch(Memory mem) Instantiate UpdatableSketch from a given Memory

Methods inherited from class java.lang.Object

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

Constructor Detail

Sketches

public Sketches()

Method Detail

createEmptySketch

public static <S extends Summary> Sketch<S> createEmptySketch()

Type Parameters:

S - Type of Summary

Returns:

an empty instance of Sketch

heapifySketch

public static <S extends Summary> Sketch<S> heapifySketch(Memory mem)

Instantiate Sketch from a given Memory

Type Parameters:

S - Type of Summary

Parameters:

mem - Memory object representing a Sketch

Returns:

Sketch created from its Memory representation

heapifyUpdatableSketch

public static <U,S extends UpdatableSummary<U>> UpdatableSketch<U,S> heapifyUpdatableSketch(Memory mem)

Instantiate UpdatableSketch from a given Memory

Type Parameters:

U - Type of update value

S - Type of Summary

Parameters:

mem - Memory object representing a Sketch

Returns:

Sketch created from its Memory representation