pu.RedLib

Class MapDifference<K,T>

java.lang.Object

pu.RedLib.MapDifference<K,T>

All Implemented Interfaces:

Reduction<java.util.Map<K,T>>

public class MapDifference<K,T>
extends java.lang.Object
implements Reduction<java.util.Map<K,T>>

Field Summary

Fields inherited from interface pu.RedLib.Reduction

ArrayCOMBINE, BooleanBITAND, BooleanBITOR, BooleanBITXOR, BooleanLOGAND, BooleanLOGOR, ByteBITAND, ByteBITOR, ByteBITXOR, ByteMAX, ByteMIN, ByteMINUS, ByteMULTI, ByteSUM, DoubleBITAND, DoubleBITOR, DoubleBITXOR, DoubleLOGAND, DoubleLOGOR, DoubleMAX, DoubleMIN, DoubleMINUS, DoubleMULTI, DoubleSUM, FloatMAX, FloatMIN, FloatMINUS, FloatMULTI, FloatSUM, IntegerBITAND, IntegerBITOR, IntegerBITXOR, IntegerLOGAND, IntegerLOGOR, IntegerMAX, IntegerMIN, IntegerMINUS, IntegerMULTI, IntegerSUM, LongBITAND, LongBITOR, LongBITXOR, LongLOGOR, LongMAX, LongMIN, LongMINUS, LongMULTI, LongSUM, ShortBITAND, ShortBITOR, ShortBITXOR, ShortMAX, ShortMIN, ShortMINUS, ShortMULTI, ShortSUM

Constructor Summary

Constructors

Constructor and Description
MapDifference()

Method Summary

Modifier and Type	Method and Description
java.util.Map<K,T>	reduce(java.util.Map<K,T> first, java.util.Map<K,T> second) Specifies a reduction as defined by 2 elements into 1.

Methods inherited from class java.lang.Object

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

Constructor Detail

MapDifference

public MapDifference()

Method Detail

reduce

public java.util.Map<K,T> reduce(java.util.Map<K,T> first,
                                 java.util.Map<K,T> second)

Description copied from interface: Reduction

Specifies a reduction as defined by 2 elements into 1. The reduction must obey the following 2 constraints:

• Associative: the order of evaluating the reduction makes no difference, and
• Commutative: the order of the thread-local values makes no difference.

Specified by:

reduce in interface Reduction<java.util.Map<K,T>>

Parameters:

first - The first element in the reduction.

second - The second element in the reduction.

Returns:

The result of reducing first with second.