org.apache.mahout.cf.taste.hadoop.item

Class ItemFilterMapper

java.lang.Object

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

org.apache.mahout.cf.taste.hadoop.item.ItemFilterMapper

public class ItemFilterMapper
extends org.apache.hadoop.mapreduce.Mapper<org.apache.hadoop.io.LongWritable,org.apache.hadoop.io.Text,VarLongWritable,VarLongWritable>

map out all user/item pairs to filter, keyed by the itemID

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
ItemFilterMapper()

Method Summary

Modifier and Type	Method and Description
protected void	map(org.apache.hadoop.io.LongWritable key, org.apache.hadoop.io.Text line, org.apache.hadoop.mapreduce.Mapper.Context ctx)

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

cleanup, run, setup

Methods inherited from class java.lang.Object

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

Constructor Detail

ItemFilterMapper

public ItemFilterMapper()

Method Detail

map

protected void map(org.apache.hadoop.io.LongWritable key,
                   org.apache.hadoop.io.Text line,
                   org.apache.hadoop.mapreduce.Mapper.Context ctx)
            throws IOException,
                   InterruptedException

Overrides:

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

Throws:

IOException

InterruptedException