oracle.spatial.hadoop.vector.mapred

Class SpatialMVSHierarchicalCountMapper<K,V>

java.lang.Object

org.apache.hadoop.mapred.MapReduceBase

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

Type Parameters:

K -

V -

All Implemented Interfaces:

java.io.Closeable, java.lang.AutoCloseable, org.apache.hadoop.mapred.JobConfigurable, org.apache.hadoop.mapred.Mapper<org.apache.hadoop.io.NullWritable,org.apache.hadoop.mapred.FileSplit,org.apache.hadoop.io.Text,org.apache.hadoop.io.LongWritable>

public class SpatialMVSHierarchicalCountMapper<K,V>
extends org.apache.hadoop.mapred.MapReduceBase
implements org.apache.hadoop.mapred.Mapper<org.apache.hadoop.io.NullWritable,org.apache.hadoop.mapred.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.

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
void	configure(org.apache.hadoop.mapred.JobConf conf)
void	map(org.apache.hadoop.io.NullWritable key, org.apache.hadoop.mapred.FileSplit value, org.apache.hadoop.mapred.OutputCollector<org.apache.hadoop.io.Text,org.apache.hadoop.io.LongWritable> output, org.apache.hadoop.mapred.Reporter reporter)
protected void	mapHierarchicalResults(java.lang.String featureId, int level, org.apache.hadoop.mapred.OutputCollector<org.apache.hadoop.io.Text,org.apache.hadoop.io.LongWritable> output, org.apache.hadoop.mapred.Reporter reporter)

Methods inherited from class org.apache.hadoop.mapred.MapReduceBase

close

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.io.Closeable

close

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

configure

public void configure(org.apache.hadoop.mapred.JobConf conf)

Specified by:

configure in interface org.apache.hadoop.mapred.JobConfigurable

Overrides:

configure in class org.apache.hadoop.mapred.MapReduceBase

map

public void map(org.apache.hadoop.io.NullWritable key,
                org.apache.hadoop.mapred.FileSplit value,
                org.apache.hadoop.mapred.OutputCollector<org.apache.hadoop.io.Text,org.apache.hadoop.io.LongWritable> output,
                org.apache.hadoop.mapred.Reporter reporter)
         throws java.io.IOException

Specified by:

map in interface org.apache.hadoop.mapred.Mapper<org.apache.hadoop.io.NullWritable,org.apache.hadoop.mapred.FileSplit,org.apache.hadoop.io.Text,org.apache.hadoop.io.LongWritable>

Throws:

java.io.IOException

mapHierarchicalResults

protected void mapHierarchicalResults(java.lang.String featureId,
                                      int level,
                                      org.apache.hadoop.mapred.OutputCollector<org.apache.hadoop.io.Text,org.apache.hadoop.io.LongWritable> output,
                                      org.apache.hadoop.mapred.Reporter reporter)
                               throws java.io.IOException

Throws:

java.io.IOException