[TOC]

org.apache.nutch.scoring.webgraph

Class NodeReader

  • java.lang.Object
    • org.apache.hadoop.conf.Configured
    • org.apache.nutch.scoring.webgraph.NodeReader
    • All Implemented Interfaces:
    • org.apache.hadoop.conf.Configurable 
public class NodeReader
extends org.apache.hadoop.conf.Configured

Reads and prints to system out information for a single node from the NodeDb in the WebGraph.

Constructor Summary

Constructors Constructor and Description NodeReader() NodeReader(org.apache.hadoop.conf.Configuration conf)

Method Summary

Methods Modifier and Type Method and Description void dumpUrl(org.apache.hadoop.fs.Path webGraphDb, String url) Prints the content of the Node represented by the url to system out. static void main(String[] args) Runs the NodeReader tool.

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

getConf, setConf 

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Methods inherited from class java.lang.Object

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

Constructor Detail

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NodeReader

public NodeReader()
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NodeReader

public NodeReader(org.apache.hadoop.conf.Configuration conf)

Method Detail

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dumpUrl

public void dumpUrl(org.apache.hadoop.fs.Path webGraphDb,
           String url)
             throws IOException

Prints the content of the Node represented by the url to system out.

  - Parameters:
  - <code>webGraphDb</code> - The webgraph from which to get the node.
  - <code>url</code> - The url of the node. 
  - Throws: 
  - <code>IOException</code> - If an error occurs while getting the node.       
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main

public static void main(String[] args)
                 throws Exception

Runs the NodeReader tool. The command line arguments must contain a webgraphdb path and a url. The url must match the normalized url that is contained in the NodeDb of the WebGraph.

  - Throws: 
  - <code>Exception</code>

Copyright © 2014 The Apache Software Foundation