Class KeywordRepeatFilter
- java.lang.Object
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- org.apache.lucene.util.AttributeSource
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- org.apache.lucene.analysis.TokenStream
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- org.apache.lucene.analysis.TokenFilter
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- org.apache.lucene.analysis.miscellaneous.KeywordRepeatFilter
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- All Implemented Interfaces:
Closeable,AutoCloseable,Unwrappable<TokenStream>
public final class KeywordRepeatFilter extends TokenFilter
This TokenFilterĀ emits each incoming token twice once as keyword and once non-keyword, in other words once withKeywordAttribute.setKeyword(boolean)set totrueand once set tofalse. This is useful if used with a stem filter that respects theKeywordAttributeto index the stemmed and the un-stemmed version of a term into the same field.
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Nested Class Summary
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Nested classes/interfaces inherited from class org.apache.lucene.util.AttributeSource
AttributeSource.State
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Field Summary
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Fields inherited from class org.apache.lucene.analysis.TokenFilter
input
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Fields inherited from class org.apache.lucene.analysis.TokenStream
DEFAULT_TOKEN_ATTRIBUTE_FACTORY
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Constructor Summary
Constructors Constructor Description KeywordRepeatFilter(TokenStream input)Construct a token stream filtering the given input.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description booleanincrementToken()voidreset()-
Methods inherited from class org.apache.lucene.analysis.TokenFilter
close, end, unwrap
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Methods inherited from class org.apache.lucene.util.AttributeSource
addAttribute, addAttributeImpl, captureState, clearAttributes, cloneAttributes, copyTo, endAttributes, equals, getAttribute, getAttributeClassesIterator, getAttributeFactory, getAttributeImplsIterator, hasAttribute, hasAttributes, hashCode, reflectAsString, reflectWith, removeAllAttributes, restoreState, toString
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Constructor Detail
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KeywordRepeatFilter
public KeywordRepeatFilter(TokenStream input)
Construct a token stream filtering the given input.
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Method Detail
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incrementToken
public boolean incrementToken() throws IOException- Specified by:
incrementTokenin classTokenStream- Throws:
IOException
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reset
public void reset() throws IOException- Overrides:
resetin classTokenFilter- Throws:
IOException
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