oracle.spatial.hadoop.vector.mapreduce

Class SpatialHierarchicalCountMapper<K,V>

java.lang.Object

org.apache.hadoop.mapreduce.Mapper<org.apache.hadoop.io.Text,RTreeWritable,org.apache.hadoop.io.Text,W>

oracle.spatial.hadoop.vector.mapreduce.AbstractSpatialHierarchicalMapper<K,V,org.apache.hadoop.io.LongWritable>

oracle.spatial.hadoop.vector.mapreduce.SpatialHierarchicalCountMapper<K,V>

Type Parameters:

K -

V -

public class SpatialHierarchicalCountMapper<K,V>
extends AbstractSpatialHierarchicalMapper<K,V,org.apache.hadoop.io.LongWritable>

This implementation of AbstractSpatialHierarchicalMapper outputs as value a single count for each hierarchical entry.

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.hadoop.mapreduce.Mapper

org.apache.hadoop.mapreduce.Mapper.Context

Field Summary

Fields inherited from class oracle.spatial.hadoop.vector.mapreduce.AbstractSpatialHierarchicalMapper

hierInfo, maxLevel, minLevel, outKey, searchMultiLevels, spatialOpConf

Constructor Summary

Constructors

Constructor and Description
SpatialHierarchicalCountMapper()

Method Summary

Modifier and Type	Method and Description
protected org.apache.hadoop.io.LongWritable	getOutValue(RecordInfo matchingRecordInfo) Given a RecordInfo instance representing a record that previously matched a hierarchy entry, returns the output value

Methods inherited from class oracle.spatial.hadoop.vector.mapreduce.AbstractSpatialHierarchicalMapper

map, mapHierarchicalResults, setup

Methods inherited from class org.apache.hadoop.mapreduce.Mapper

cleanup, run

Methods inherited from class java.lang.Object

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

Constructor Detail

SpatialHierarchicalCountMapper

public SpatialHierarchicalCountMapper()

Method Detail

getOutValue

protected org.apache.hadoop.io.LongWritable getOutValue(RecordInfo matchingRecordInfo)

Description copied from class: AbstractSpatialHierarchicalMapper

Given a RecordInfo instance representing a record that previously matched a hierarchy entry, returns the output value

Specified by:

getOutValue in class AbstractSpatialHierarchicalMapper<K,V,org.apache.hadoop.io.LongWritable>

Parameters:

matchingRecordInfo - an instance of RecordInfo

Returns:

a value used as the output value