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org.apache.nutch.indexer.more

Class MoreIndexingFilter

public class MoreIndexingFilter
extends Object
implements IndexingFilter

Add (or reset) a few metaData properties as respective fields (if they are available), so that they can be accurately used within the search index. 'lastModifed' is indexed to support query by date, 'contentLength' obtains content length from the HTTP header, 'type' field is indexed to support query by type and finally the 'title' field is an attempt to reset the title if a content-disposition hint exists. The logic is that such a presence is indicative that the content provider wants the filename therein to be used as the title. Still need to make content-length searchable!

  • Author:
  • John Xing

Field Summary

Fields Modifier and Type Field and Description static org.slf4j.Logger LOG 

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Fields inherited from interface org.apache.nutch.indexer.IndexingFilter

X_POINT_ID

Constructor Summary

Constructors Constructor and Description MoreIndexingFilter()

Method Summary

Methods Modifier and Type Method and Description NutchDocument filter(NutchDocument doc, Parse parse, org.apache.hadoop.io.Text url, CrawlDatum datum, Inlinks inlinks) Adds fields or otherwise modifies the document that will be indexed for a parse. org.apache.hadoop.conf.Configuration getConf() void setConf(org.apache.hadoop.conf.Configuration conf) 

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Methods inherited from class java.lang.Object

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

Field Detail

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LOG

public static final org.slf4j.Logger LOG

Constructor Detail

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MoreIndexingFilter

public MoreIndexingFilter()

Method Detail

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filter

public NutchDocument filter(NutchDocument doc,
                   Parse parse,
                   org.apache.hadoop.io.Text url,
                   CrawlDatum datum,
                   Inlinks inlinks)
                     throws IndexingException

Description copied from interface: IndexingFilter

Adds fields or otherwise modifies the document that will be indexed for a parse. Unwanted documents can be removed from indexing by returning a null value.

  - Specified by: 
  - <code>filter</code> in interface <code>IndexingFilter</code> 
  - Parameters:
  - <code>doc</code> - document instance for collecting fields
  - <code>parse</code> - parse data instance
  - <code>url</code> - page url
  - <code>datum</code> - crawl datum for the page
  - <code>inlinks</code> - page inlinks 
  - Returns:
  - modified (or a new) document instance, or null (meaning the document should be discarded) 
  - Throws: 
  - <code>IndexingException</code>       
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setConf

public void setConf(org.apache.hadoop.conf.Configuration conf)
  - Specified by: 
  - <code>setConf</code> in interface <code>org.apache.hadoop.conf.Configurable</code>        
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getConf

public org.apache.hadoop.conf.Configuration getConf()
  - Specified by: 
  - <code>getConf</code> in interface <code>org.apache.hadoop.conf.Configurable</code>

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