Package org.apache.datasketches.tuple

Class Filter<T extends Summary>

java.lang.Object

org.apache.datasketches.tuple.Filter<T>

Type Parameters:

T - Summary type against which apply the Predicate

public class Filter<T extends Summary>
extends Object

Class for filtering entries from a Sketch given a Summary

Constructor Summary

Constructors

Constructor	Description
Filter(Predicate<T> predicate)	Filter constructor with a Predicate

Method Summary

Modifier and Type	Method	Description
CompactSketch<T>	filter(Sketch<T> sketchIn)	Filters elements on the provided Sketch

Methods inherited from class java.lang.Object

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

Constructor Details

Filter

public Filter(Predicate<T> predicate)

Filter constructor with a Predicate

Parameters:

predicate - Predicate to use in this filter. If the Predicate returns False, the element is discarded. If the Predicate returns True, then the element is kept in the Sketch

Method Details

filter

public CompactSketch<T> filter(Sketch<T> sketchIn)

Filters elements on the provided Sketch

Parameters:

sketchIn - The sketch against which apply the Predicate

Returns:

A new Sketch with some of the entries filtered out based on the Predicate