org.apache.datasketches.tuple

Class AnotB<S extends Summary>

java.lang.Object

org.apache.datasketches.tuple.AnotB<S>

Type Parameters:

S - Type of Summary

public final class AnotB<S extends Summary>
extends Object

Computes a set difference of two generic tuple sketches

Constructor Summary

Constructors

Constructor and Description
AnotB()

Method Summary

Modifier and Type	Method and Description
CompactSketch<S>	getResult() Gets the result of this operation
void	update(Sketch<S> a, Sketch<S> b) Perform A-and-not-B set operation on the two given sketches.

Methods inherited from class java.lang.Object

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

Constructor Detail

AnotB

public AnotB()

Method Detail

update

public void update(Sketch<S> a,
                   Sketch<S> b)

Perform A-and-not-B set operation on the two given sketches. A null sketch is interpreted as an empty sketch. This is not an accumulating update. Calling update() more than once without calling getResult() will discard the result of previous update()

Parameters:

a - The incoming sketch for the first argument

b - The incoming sketch for the second argument

getResult

public CompactSketch<S> getResult()

Gets the result of this operation

Returns:

the result of this operation as a CompactSketch