oracle.spatial.hadoop.vector.mapreduce

Class SpatialMVSHierarchicalCountMapper<K,V>

java.lang.Object

org.apache.hadoop.mapreduce.Mapper<org.apache.hadoop.io.NullWritable,org.apache.hadoop.mapreduce.lib.input.FileSplit,org.apache.hadoop.io.Text,org.apache.hadoop.io.LongWritable>

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

Type Parameters:

K -

V -

public class SpatialMVSHierarchicalCountMapper<K,V>
extends org.apache.hadoop.mapreduce.Mapper<org.apache.hadoop.io.NullWritable,org.apache.hadoop.mapreduce.lib.input.FileSplit,org.apache.hadoop.io.Text,org.apache.hadoop.io.LongWritable>

Mapper class that categorizes input records into features defined in a hierarchical dataset. If an MVSuggest configuration is found, the MVSuggest service is used to perform the categorization, otherwise, the match between the input data set and the hierarchical dataset will be performed using a spatial operation.

Nested Class Summary

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

org.apache.hadoop.mapreduce.Mapper.Context

Field Summary

Fields

Modifier and Type	Field and Description
protected HierarchyInfo	hierInfo
protected int	maxLevel
protected int	minLevel
protected org.apache.hadoop.io.Text	outKey
protected org.apache.hadoop.io.LongWritable	outValue
protected boolean	searchMultiLevels
protected SpatialOperationConfig	spatialOpConf

Constructor Summary

Constructors

Constructor and Description
SpatialMVSHierarchicalCountMapper()

Method Summary

Methods

Modifier and Type	Method and Description
protected void	map(org.apache.hadoop.io.NullWritable key, org.apache.hadoop.mapreduce.lib.input.FileSplit value, org.apache.hadoop.mapreduce.Mapper.Context context)
protected void	mapHierarchicalResults(java.lang.String featureId, int level, org.apache.hadoop.mapreduce.Mapper.Context context)
void	setup(org.apache.hadoop.mapreduce.Mapper.Context context)

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

Field Detail

outKey

protected org.apache.hadoop.io.Text outKey

outValue

protected org.apache.hadoop.io.LongWritable outValue

spatialOpConf

protected SpatialOperationConfig spatialOpConf

hierInfo

protected HierarchyInfo hierInfo

searchMultiLevels

protected boolean searchMultiLevels

maxLevel

protected int maxLevel

minLevel

protected int minLevel

Constructor Detail

SpatialMVSHierarchicalCountMapper

public SpatialMVSHierarchicalCountMapper()

Method Detail

setup

public void setup(org.apache.hadoop.mapreduce.Mapper.Context context)
           throws java.io.IOException,
                  java.lang.InterruptedException

Overrides:

setup in class org.apache.hadoop.mapreduce.Mapper<org.apache.hadoop.io.NullWritable,org.apache.hadoop.mapreduce.lib.input.FileSplit,org.apache.hadoop.io.Text,org.apache.hadoop.io.LongWritable>

Throws:

java.io.IOException

java.lang.InterruptedException

map

protected void map(org.apache.hadoop.io.NullWritable key,
       org.apache.hadoop.mapreduce.lib.input.FileSplit value,
       org.apache.hadoop.mapreduce.Mapper.Context context)
            throws java.io.IOException,
                   java.lang.InterruptedException

Overrides:

map in class org.apache.hadoop.mapreduce.Mapper<org.apache.hadoop.io.NullWritable,org.apache.hadoop.mapreduce.lib.input.FileSplit,org.apache.hadoop.io.Text,org.apache.hadoop.io.LongWritable>

Throws:

java.io.IOException

java.lang.InterruptedException

mapHierarchicalResults

protected void mapHierarchicalResults(java.lang.String featureId,
                          int level,
                          org.apache.hadoop.mapreduce.Mapper.Context context)
                               throws java.io.IOException,
                                      java.lang.InterruptedException

Throws:

java.io.IOException

java.lang.InterruptedException