/**
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.mahout.clustering.topdown.postprocessor;
import java.io.IOException;
import org.apache.hadoop.io.IntWritable;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.mapreduce.Mapper;
import org.apache.mahout.clustering.WeightedVectorWritable;
import org.apache.mahout.math.VectorWritable;
/**
* Mapper for post processing cluster output.
*/
public class ClusterOutputPostProcessorMapper extends
Mapper<IntWritable,WeightedVectorWritable,Text,VectorWritable> {
/**
* The key is the cluster id and the value is the vector.
*/
@Override
protected void map(IntWritable key, WeightedVectorWritable vector, Context context) throws IOException,
InterruptedException {
context.write(new Text(key.toString().trim()), new VectorWritable(vector.getVector()));
}
}