org.apache.nutch.scoring.webgraph
Class LinkDumper.Inverter
java.lang.Object
org.apache.nutch.scoring.webgraph.LinkDumper.Inverter
- All Implemented Interfaces:
- Closeable, JobConfigurable, Mapper<Text,Writable,Text,ObjectWritable>, Reducer<Text,ObjectWritable,Text,LinkDumper.LinkNode>
- Enclosing class:
- LinkDumper
public static class LinkDumper.Inverter
- extends Object
- implements Mapper<Text,Writable,Text,ObjectWritable>, Reducer<Text,ObjectWritable,Text,LinkDumper.LinkNode>
Inverts outlinks from the WebGraph to inlinks and attaches node
information.
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
LinkDumper.Inverter
public LinkDumper.Inverter()
configure
public void configure(JobConf conf)
- Specified by:
configure
in interface JobConfigurable
map
public void map(Text key,
Writable value,
OutputCollector<Text,ObjectWritable> output,
Reporter reporter)
throws IOException
- Wraps all values in ObjectWritables.
- Specified by:
map
in interface Mapper<Text,Writable,Text,ObjectWritable>
- Throws:
IOException
reduce
public void reduce(Text key,
Iterator<ObjectWritable> values,
OutputCollector<Text,LinkDumper.LinkNode> output,
Reporter reporter)
throws IOException
- Inverts outlinks to inlinks while attaching node information to the
outlink.
- Specified by:
reduce
in interface Reducer<Text,ObjectWritable,Text,LinkDumper.LinkNode>
- Throws:
IOException
close
public void close()
- Specified by:
close
in interface Closeable
Copyright © 2011 The Apache Software Foundation