Package org.apache.datasketches.tuple.strings

Class ArrayOfStringsSummarySetOperations

java.lang.Object

org.apache.datasketches.tuple.strings.ArrayOfStringsSummarySetOperations

All Implemented Interfaces:

SummarySetOperations<ArrayOfStringsSummary>

public class ArrayOfStringsSummarySetOperations
extends Object
implements SummarySetOperations<ArrayOfStringsSummary>

Author:

Lee Rhodes

Constructor Summary

Constructors

Constructor	Description
ArrayOfStringsSummarySetOperations()

Method Summary

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

Methods inherited from class java.lang.Object

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

Constructor Detail

ArrayOfStringsSummarySetOperations

public ArrayOfStringsSummarySetOperations()

Method Detail

union

public ArrayOfStringsSummary union(ArrayOfStringsSummary a,
                                   ArrayOfStringsSummary 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<ArrayOfStringsSummary>

Parameters:

a - Summary from sketch A

b - Summary from sketch B

Returns:

union of Summary A and Summary B

intersection

public ArrayOfStringsSummary intersection(ArrayOfStringsSummary a,
                                          ArrayOfStringsSummary 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<ArrayOfStringsSummary>

Parameters:

a - Summary from sketch A

b - Summary from sketch B

Returns:

intersection of Summary A and Summary B