Package org.apache.nutch.scoring.webgraph

Class NodeReader

java.lang.Object

org.apache.hadoop.conf.Configured

org.apache.nutch.scoring.webgraph.NodeReader

All Implemented Interfaces:

Configurable

public class NodeReader
extends Configured

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

Constructor Summary

Constructors

Constructor	Description
NodeReader()
NodeReader(Configuration conf)

Method Summary

Modifier and Type	Method	Description
void	dumpUrl(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.

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

NodeReader

public NodeReader()

NodeReader

public NodeReader(Configuration conf)

Method Detail

dumpUrl

public void dumpUrl(Path webGraphDb,
                    String url)
             throws IOException

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

Parameters:

webGraphDb - The webgraph from which to get the node.

url - The url of the node.

Throws:

IOException - If an error occurs while getting the node.

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.

Parameters:

args - input parameters for running this tool, run with "help" for information

Throws:

Exception - if there is a fatal error running this tool