ScoreUpdater (apache-nutch 1.20 API)

java.lang.Object
- org.apache.hadoop.conf.Configured
- - org.apache.nutch.scoring.webgraph.ScoreUpdater

All Implemented Interfaces:

Configurable, Tool
```
public class ScoreUpdater
extends Configured
implements Tool
```
Updates the score from the WebGraph node database into the crawl database. Any score that is not in the node database is set to the clear score in the crawl database.

Nested Class Summary

Nested Classes
Modifier and Type	Class	Description
`static class`	`ScoreUpdater.ScoreUpdaterMapper`	Changes input into ObjectWritables.
`static class`	`ScoreUpdater.ScoreUpdaterReducer`	Creates new CrawlDatum objects with the updated score from the NodeDb or with a cleared score.

Constructor Summary

Constructors
Constructor Description

ScoreUpdater()

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`static void`	`main(String[] args)`
`int`	`run(String[] args)`	Runs the ScoreUpdater tool.
`void`	`update(Path crawlDb, Path webGraphDb)`	Updates the inlink score in the web graph node databsae into the crawl database.

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

Methods inherited from interface org.apache.hadoop.conf.Configurable
getConf, setConf

- Constructor Detail
  - ScoreUpdater
```
public ScoreUpdater()
```
- Method Detail
  - update
```
public void update(Path crawlDb,
                   Path webGraphDb)
            throws IOException,
                   ClassNotFoundException,
                   InterruptedException
```
    Updates the inlink score in the web graph node databsae into the crawl database.
    
    Parameters:
    
    crawlDb - The crawl database to update
    
    webGraphDb - The webgraph database to use.
    
    Throws:
    
    IOException - If an error occurs while updating the scores.
    
    InterruptedException - if the Job is interrupted during execution
    
    ClassNotFoundException - if classes required to run the Job cannot be located
  - main
```
public static void main(String[] args)
                 throws Exception
```
    Throws:
    
    Exception
  - run
```
public int run(String[] args)
        throws Exception
```
    Runs the ScoreUpdater tool.
    
    Specified by:
    
    run in interface Tool
    
    Throws:
    
    Exception