org.openimaj.hadoop.tools.twitter.token.outputmode.sparsecsv

Class WordIndex.Map

java.lang.Object

org.apache.hadoop.mapreduce.Mapper<org.apache.hadoop.io.Text,org.apache.hadoop.io.BytesWritable,org.apache.hadoop.io.Text,org.apache.hadoop.io.LongWritable>

org.openimaj.hadoop.tools.twitter.token.outputmode.sparsecsv.WordIndex.Map

Enclosing class:

WordIndex

public static class WordIndex.Map
extends org.apache.hadoop.mapreduce.Mapper<org.apache.hadoop.io.Text,org.apache.hadoop.io.BytesWritable,org.apache.hadoop.io.Text,org.apache.hadoop.io.LongWritable>

Emits each word with the total number of times the word was seen

Author:

Sina Samangooei (ss@ecs.soton.ac.uk)

Nested Class Summary

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

org.apache.hadoop.mapreduce.Mapper.Context

Constructor Summary

Constructors

Constructor and Description
WordIndex.Map()

Method Summary

Methods

Modifier and Type	Method and Description
void	map(org.apache.hadoop.io.Text key, org.apache.hadoop.io.BytesWritable value, org.apache.hadoop.mapreduce.Mapper.Context context)
protected 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

Constructor Detail

WordIndex.Map

public WordIndex.Map()

Method Detail

setup

protected void setup(org.apache.hadoop.mapreduce.Mapper.Context context)
              throws IOException,
                     InterruptedException

Overrides:

setup in class org.apache.hadoop.mapreduce.Mapper<org.apache.hadoop.io.Text,org.apache.hadoop.io.BytesWritable,org.apache.hadoop.io.Text,org.apache.hadoop.io.LongWritable>

Throws:

IOException

InterruptedException

map

public void map(org.apache.hadoop.io.Text key,
       org.apache.hadoop.io.BytesWritable value,
       org.apache.hadoop.mapreduce.Mapper.Context context)
         throws InterruptedException

Overrides:

map in class org.apache.hadoop.mapreduce.Mapper<org.apache.hadoop.io.Text,org.apache.hadoop.io.BytesWritable,org.apache.hadoop.io.Text,org.apache.hadoop.io.LongWritable>

Throws:

InterruptedException