org.torweg.pulse.util.search
Class SitemapNodeUniqueContentFilter

java.lang.Object
  org.apache.lucene.search.Filter
      org.torweg.pulse.util.search.SitemapNodeUniqueContentFilter

All Implemented Interfaces:

java.io.Serializable

public class SitemapNodeUniqueContentFilter
extends org.apache.lucene.search.Filter

a Filter providing unique Contents during full text search.

The actual filtering is heavily influenced by org.apache.lucene.search.DuplicateFilter of the Lucene^TM contrib package.

Version:

$Revision: 1415 $

Author:

unknown, Thomas Weber

See Also:

SitemapNode, Serialized Form

Constructor Summary

SitemapNodeUniqueContentFilter()
default constructor.

Method Summary

org.apache.lucene.search.DocIdSet	getDocIdSet(org.apache.lucene.index.IndexReader reader) does the actual filtering.
org.apache.lucene.search.Filter	getFilter() factory method to create a cachable version of SitemapNodeUniqueContentFilter.

Methods inherited from class org.apache.lucene.search.Filter

bits

Methods inherited from class java.lang.Object

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

Constructor Detail

SitemapNodeUniqueContentFilter

public SitemapNodeUniqueContentFilter()

default constructor.

Method Detail

getFilter

@Factory
public final org.apache.lucene.search.Filter getFilter()

factory method to create a cachable version of SitemapNodeUniqueContentFilter.

Returns:

the cachable filter

See Also:

Factory

getDocIdSet

public final org.apache.lucene.search.DocIdSet getDocIdSet(org.apache.lucene.index.IndexReader reader)
                                                    throws java.io.IOException

does the actual filtering.

It creates a DocIdBitSet which is IndexReader.maxDoc() wide with bits set for all non duplicates.

Overrides:

getDocIdSet in class org.apache.lucene.search.Filter

Parameters:

reader - the index reader

Returns:

a bit set with the results to be included

Throws:

java.io.IOException - on errors accessing the index

See Also:

Filter.getDocIdSet(org.apache.lucene.index.IndexReader)