org.apache.mahout.clustering.canopy
Class ClusterMapper

java.lang.Object
  extended by org.apache.hadoop.mapred.MapReduceBase
      extended by org.apache.mahout.clustering.canopy.ClusterMapper
All Implemented Interfaces:
java.io.Closeable, org.apache.hadoop.mapred.JobConfigurable, org.apache.hadoop.mapred.Mapper<org.apache.hadoop.io.WritableComparable<?>,VectorWritable,org.apache.hadoop.io.Text,VectorWritable>

public class ClusterMapper
extends org.apache.hadoop.mapred.MapReduceBase
implements org.apache.hadoop.mapred.Mapper<org.apache.hadoop.io.WritableComparable<?>,VectorWritable,org.apache.hadoop.io.Text,VectorWritable>


Constructor Summary
ClusterMapper()
           
 
Method Summary
 boolean canopyCovers(Canopy canopy, Vector point)
           
 void config(java.util.List<Canopy> canopies)
          Configure the mapper by providing its canopies.
 void configure(org.apache.hadoop.mapred.JobConf job)
           
 void map(org.apache.hadoop.io.WritableComparable<?> key, VectorWritable point, org.apache.hadoop.mapred.OutputCollector<org.apache.hadoop.io.Text,VectorWritable> output, org.apache.hadoop.mapred.Reporter reporter)
           
 
Methods inherited from class org.apache.hadoop.mapred.MapReduceBase
close
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 
Methods inherited from interface java.io.Closeable
close
 

Constructor Detail

ClusterMapper

public ClusterMapper()
Method Detail

map

public void map(org.apache.hadoop.io.WritableComparable<?> key,
                VectorWritable point,
                org.apache.hadoop.mapred.OutputCollector<org.apache.hadoop.io.Text,VectorWritable> output,
                org.apache.hadoop.mapred.Reporter reporter)
         throws java.io.IOException
Specified by:
map in interface org.apache.hadoop.mapred.Mapper<org.apache.hadoop.io.WritableComparable<?>,VectorWritable,org.apache.hadoop.io.Text,VectorWritable>
Throws:
java.io.IOException

config

public void config(java.util.List<Canopy> canopies)
Configure the mapper by providing its canopies. Used by unit tests.

Parameters:
canopies - a List

configure

public void configure(org.apache.hadoop.mapred.JobConf job)
Specified by:
configure in interface org.apache.hadoop.mapred.JobConfigurable
Overrides:
configure in class org.apache.hadoop.mapred.MapReduceBase

canopyCovers

public boolean canopyCovers(Canopy canopy,
                            Vector point)


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