org.apache.nutch.scoring.webgraph
Class Loops.Finalizer

java.lang.Object
  org.apache.hadoop.conf.Configured
      org.apache.nutch.scoring.webgraph.Loops.Finalizer

All Implemented Interfaces:

Closeable, Configurable, JobConfigurable, Mapper<Text,Loops.Route,Text,Loops.Route>, Reducer<Text,Loops.Route,Text,Loops.LoopSet>

Enclosing class:

Loops

public static class Loops.Finalizer
extends Configured
implements Mapper<Text,Loops.Route,Text,Loops.Route>, Reducer<Text,Loops.Route,Text,Loops.LoopSet>

Finishes the Loops job by aggregating and collecting and found routes.

Constructor Summary

Loops.Finalizer()
Default constructor.

Loops.Finalizer(Configuration conf)
Configurable constructor.

Method Summary

void	close()
void	configure(JobConf conf) Configures the job.
void	map(Text key, Loops.Route value, OutputCollector<Text,Loops.Route> output, Reporter reporter) Maps out and found routes, those will be the link cycles.
void	reduce(Text key, Iterator<Loops.Route> values, OutputCollector<Text,Loops.LoopSet> output, Reporter reporter) Aggregates all found routes for a given start url into a loopset and collects the loopset.

Methods inherited from class org.apache.hadoop.conf.Configured

getConf, setConf

Methods inherited from class java.lang.Object

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

Constructor Detail

Loops.Finalizer

public Loops.Finalizer()

Default constructor.

Loops.Finalizer

public Loops.Finalizer(Configuration conf)

Configurable constructor.

Method Detail

configure

public void configure(JobConf conf)

Configures the job.

Specified by:

configure in interface JobConfigurable

map

public void map(Text key,
                Loops.Route value,
                OutputCollector<Text,Loops.Route> output,
                Reporter reporter)
         throws IOException

Maps out and found routes, those will be the link cycles.

Specified by:

map in interface Mapper<Text,Loops.Route,Text,Loops.Route>

Throws:

IOException

reduce

public void reduce(Text key,
                   Iterator<Loops.Route> values,
                   OutputCollector<Text,Loops.LoopSet> output,
                   Reporter reporter)
            throws IOException

Aggregates all found routes for a given start url into a loopset and collects the loopset.

Specified by:

reduce in interface Reducer<Text,Loops.Route,Text,Loops.LoopSet>

Throws:

IOException

close

public void close()

Specified by:

close in interface Closeable