Package org.apache.datasketches.tuple.aninteger

Class IntegerSummarySetOperations

java.lang.Object

org.apache.datasketches.tuple.aninteger.IntegerSummarySetOperations

All Implemented Interfaces:

SummarySetOperations<IntegerSummary>

public class IntegerSummarySetOperations
extends Object
implements SummarySetOperations<IntegerSummary>

Methods for defining how unions and intersections of two objects of type IntegerSummary are performed.

Author:

Lee Rhodes

Constructor Summary

Constructors

Constructor	Description
IntegerSummarySetOperations(IntegerSummary.Mode unionSummaryMode, IntegerSummary.Mode intersectionSummaryMode)	Creates a new instance with two modes

Method Summary

Modifier and Type	Method	Description
IntegerSummary	intersection(IntegerSummary a, IntegerSummary b)	This is called by the intersection operator when both sketches have the same hash value.
IntegerSummary	union(IntegerSummary a, IntegerSummary b)	This is called by the union operator when both sketches have the same hash value.

Methods inherited from class java.lang.Object

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

Constructor Details

IntegerSummarySetOperations

public IntegerSummarySetOperations(IntegerSummary.Mode unionSummaryMode,
 IntegerSummary.Mode intersectionSummaryMode)

Creates a new instance with two modes

Parameters:

unionSummaryMode - for unions

intersectionSummaryMode - for intersections

Method Details

union

public IntegerSummary union(IntegerSummary a,
 IntegerSummary b)

Description copied from interface: SummarySetOperations

This is called by the union operator when both sketches have the same hash value.

Caution: Do not modify the input Summary objects. Also do not return them directly, unless they are immutable (most Summary objects are not). For mutable Summary objects, it is important to create a new Summary object with the correct contents to be returned. Do not return null summaries.

Specified by:

union in interface SummarySetOperations<IntegerSummary>

Parameters:

a - Summary from sketch A

b - Summary from sketch B

Returns:

union of Summary A and Summary B

intersection

public IntegerSummary intersection(IntegerSummary a,
 IntegerSummary b)

Description copied from interface: SummarySetOperations

This is called by the intersection operator when both sketches have the same hash value.

Caution: Do not modify the input Summary objects. Also do not return them directly, unless they are immutable (most Summary objects are not). For mutable Summary objects, it is important to create a new Summary object with the correct contents to be returned. Do not return null summaries.

Specified by:

intersection in interface SummarySetOperations<IntegerSummary>

Parameters:

a - Summary from sketch A

b - Summary from sketch B

Returns:

intersection of Summary A and Summary B