org.apache.lucene.analysis.miscellaneous
Class KeywordRepeatFilter

java.lang.Object
  org.apache.lucene.util.AttributeSource
      org.apache.lucene.analysis.TokenStream
          org.apache.lucene.analysis.TokenFilter
              org.apache.lucene.analysis.miscellaneous.KeywordRepeatFilter

All Implemented Interfaces:

Closeable

public final class KeywordRepeatFilter
extends TokenFilter

This TokenFilter emits each incoming token twice once as keyword and once non-keyword, in other words once with KeywordAttribute.setKeyword(boolean) set to true and once set to false. This is useful if used with a stem filter that respects the KeywordAttribute to index the stemmed and the un-stemmed version of a term into the same field.

Nested Class Summary

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

AttributeSource.AttributeFactory, AttributeSource.State

Field Summary

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

input

Constructor Summary

KeywordRepeatFilter(TokenStream input)
Construct a token stream filtering the given input.

Method Summary

boolean	incrementToken()
void	reset()

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

Constructor Detail

KeywordRepeatFilter

public KeywordRepeatFilter(TokenStream input)

Construct a token stream filtering the given input.

Method Detail

incrementToken

public boolean incrementToken()
                       throws IOException

Specified by:

incrementToken in class TokenStream

Throws:

IOException

reset

public void reset()
           throws IOException

Overrides:

reset in class TokenFilter

Throws:

IOException