edu.umn.cs.spatialHadoop.operations

Class KNN.KNNMap<S extends Shape>

java.lang.Object

MapReduceBase

edu.umn.cs.spatialHadoop.operations.KNN.KNNMap<S>

Direct Known Subclasses:

KNN.Map1, KNN.Map2

Enclosing class:

KNN

public static class KNN.KNNMap<S extends Shape>
extends MapReduceBase

Mapper for KNN MapReduce. Calculates the distance between a shape and the query point.

Author:

eldawy

Constructor Summary

Constructors

Constructor and Description
KNN.KNNMap()

Method Summary

Methods

Modifier and Type	Method and Description
void	configure(JobConf job)
void	map(Rectangle cell, ArrayWritable shapes, output, Reporter reporter) Map for non-indexed (heap) blocks
void	map(Rectangle cellInfo, RTree<S> shapes, output, Reporter reporter) Map for RTree indexed blocks

Methods inherited from class java.lang.Object

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

Constructor Detail

KNN.KNNMap

public KNN.KNNMap()

Method Detail

configure

public void configure(JobConf job)

map

public void map(Rectangle cell,
       ArrayWritable shapes,
        output,
       Reporter reporter)
         throws java.io.IOException

Map for non-indexed (heap) blocks

Parameters:

id -

shape -

output -

reporter -

Throws:

java.io.IOException

map

public void map(Rectangle cellInfo,
       RTree<S> shapes,
        output,
       Reporter reporter)
         throws java.io.IOException

Map for RTree indexed blocks

Parameters:

id -

shapes -

output -

reporter -

Throws:

java.io.IOException