org.apache.solr.analysis

Class KeepWordFilter

java.lang.Object

org.apache.lucene.util.AttributeSource

org.apache.lucene.analysis.TokenStream

org.apache.lucene.analysis.TokenFilter

org.apache.lucene.analysis.FilteringTokenFilter

org.apache.solr.analysis.KeepWordFilter

All Implemented Interfaces:

java.io.Closeable, java.lang.AutoCloseable

public final class KeepWordFilter
extends org.apache.lucene.analysis.FilteringTokenFilter

A TokenFilter that only keeps tokens with text contained in the required words. This filter behaves like the inverse of StopFilter.

Since:

solr 1.3

Version:

$Id: KeepWordFilter.java 1065324 2011-01-30 17:20:39Z uschindler $

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.lucene.util.AttributeSource

org.apache.lucene.util.AttributeSource.AttributeFactory, org.apache.lucene.util.AttributeSource.State

Field Summary

Fields

Modifier and Type	Field and Description
private org.apache.lucene.analysis.tokenattributes.CharTermAttribute	termAtt
private org.apache.lucene.analysis.CharArraySet	words

Fields inherited from class org.apache.lucene.analysis.TokenFilter

input

Constructor Summary

Constructors

Constructor and Description
KeepWordFilter(boolean enablePositionIncrements, org.apache.lucene.analysis.TokenStream in, org.apache.lucene.analysis.CharArraySet words) The words set passed to this constructor will be directly used by this filter and should not be modified,
KeepWordFilter(org.apache.lucene.analysis.TokenStream in, java.util.Set<java.lang.String> words, boolean ignoreCase) Deprecated. Use KeepWordFilter(boolean, TokenStream, CharArraySet) instead

Method Summary

Modifier and Type	Method and Description
boolean	accept()

Methods inherited from class org.apache.lucene.analysis.FilteringTokenFilter

getEnablePositionIncrements, incrementToken, reset, setEnablePositionIncrements

Methods inherited from class org.apache.lucene.analysis.TokenFilter

close, end

Methods inherited from class org.apache.lucene.util.AttributeSource

addAttribute, addAttributeImpl, captureState, clearAttributes, cloneAttributes, copyTo, equals, getAttribute, getAttributeClassesIterator, getAttributeFactory, getAttributeImplsIterator, hasAttribute, hasAttributes, hashCode, reflectAsString, reflectWith, restoreState, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

words

private final org.apache.lucene.analysis.CharArraySet words

termAtt

private final org.apache.lucene.analysis.tokenattributes.CharTermAttribute termAtt

Constructor Detail

KeepWordFilter

@Deprecated
public KeepWordFilter(org.apache.lucene.analysis.TokenStream in,
                                  java.util.Set<java.lang.String> words,
                                  boolean ignoreCase)

Deprecated. Use KeepWordFilter(boolean, TokenStream, CharArraySet) instead

KeepWordFilter

public KeepWordFilter(boolean enablePositionIncrements,
                      org.apache.lucene.analysis.TokenStream in,
                      org.apache.lucene.analysis.CharArraySet words)

The words set passed to this constructor will be directly used by this filter and should not be modified,

Method Detail

accept

public boolean accept()
               throws java.io.IOException

Specified by:

accept in class org.apache.lucene.analysis.FilteringTokenFilter

Throws:

java.io.IOException