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 and Description
ArrayOfStringsSummarySetOperations()

Method Summary

Modifier and Type	Method and Description
ArrayOfStringsSummary	intersection(ArrayOfStringsSummary a, ArrayOfStringsSummary b) This is called when an intersection of two sketches is produced, and both sketches have the same key.
ArrayOfStringsSummary	union(ArrayOfStringsSummary a, ArrayOfStringsSummary b) This is called when a union of two sketches is produced, and both sketches have the same key.

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 when a union of two sketches is produced, and both sketches have the same key.

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 when an intersection of two sketches is produced, and both sketches have the same key.

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