org.apache.mahout.cf.taste.hadoop.preparation

Class ToItemVectorsMapper

java.lang.Object

org.apache.hadoop.mapreduce.Mapper<VarLongWritable,VectorWritable,org.apache.hadoop.io.IntWritable,VectorWritable>

org.apache.mahout.cf.taste.hadoop.preparation.ToItemVectorsMapper

public class ToItemVectorsMapper
extends org.apache.hadoop.mapreduce.Mapper<VarLongWritable,VectorWritable,org.apache.hadoop.io.IntWritable,VectorWritable>

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
ToItemVectorsMapper()

Method Summary

Modifier and Type	Method and Description
protected void	map(VarLongWritable rowIndex, VectorWritable vectorWritable, 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

ToItemVectorsMapper

public ToItemVectorsMapper()

Method Detail

map

protected void map(VarLongWritable rowIndex,
                   VectorWritable vectorWritable,
                   org.apache.hadoop.mapreduce.Mapper.Context ctx)
            throws IOException,
                   InterruptedException

Overrides:

map in class org.apache.hadoop.mapreduce.Mapper<VarLongWritable,VectorWritable,org.apache.hadoop.io.IntWritable,VectorWritable>

Throws:

IOException

InterruptedException