edu.umn.cs.spatialHadoop.operations

Class Skyline.IdentityMapper

java.lang.Object

MapReduceBase

edu.umn.cs.spatialHadoop.operations.Skyline.IdentityMapper

Enclosing class:

Skyline

public static class Skyline.IdentityMapper
extends MapReduceBase

An identity map function that returns values as-is with a null key. This ensures that all values are reduced in one reducer.

Author:

Ahmed Eldawy

Constructor Summary

Constructors

Constructor and Description
Skyline.IdentityMapper()

Method Summary

Methods

Modifier and Type	Method and Description
void	map(Rectangle dummy, SpatialRecordReader.ShapeIterator points, output, Reporter reporter)

Methods inherited from class java.lang.Object

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

Constructor Detail

Skyline.IdentityMapper

public Skyline.IdentityMapper()

Method Detail

map

public void map(Rectangle dummy,
       SpatialRecordReader.ShapeIterator points,
        output,
       Reporter reporter)
         throws java.io.IOException

Throws:

java.io.IOException