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

java.lang.Object
  extended by org.apache.hadoop.mapreduce.Mapper<org.apache.hadoop.io.LongWritable,org.apache.hadoop.io.Text,VarLongWritable,VarLongWritable>
      extended by 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
ItemFilterMapper()
           
 
Method Summary
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


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