oracle.spatial.hadoop.vector.mapreduce

Class MVSHierachicalCountMapper<K,V>

java.lang.Object

<any>

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

Type Parameters:

K - The type of the internalInputFormat's keys

V - The type of the internalInputFormat's values

public class MVSHierachicalCountMapper<K,V>
extends <any>

This mapper implementation catalogs records in different hierarchy levels using MVSuggest.

The output key is a combination of the hierarchy layer's name and the hierarchy level's feature id. The value is the number of records counted for the key's feature

Expected configuration:

• ConfigParams.INTERNAL_INPUT_FORMAT
• ConfigParams.RECORD_INFO_PROVIDER
• ConfigParams.HIERARCHY_INFO_CLASS
• MVSConfig.CONF_SERVCE_LOCATION

Author:

hsaucedo

Constructor Summary

Constructors

Constructor and Description
MVSHierachicalCountMapper()

Method Summary

Modifier and Type	Method and Description
void	map(NullWritable key, FileSplit value, Context context)
void	setup(Context context)

Methods inherited from class java.lang.Object

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

Constructor Detail

MVSHierachicalCountMapper

public MVSHierachicalCountMapper()

Method Detail

map

public void map(NullWritable key,
                FileSplit value,
                Context context)
         throws java.io.IOException,
                java.lang.InterruptedException

Throws:

java.io.IOException

java.lang.InterruptedException

setup

public void setup(Context context)
           throws java.io.IOException,
                  java.lang.InterruptedException

Throws:

java.io.IOException

java.lang.InterruptedException