Class ConcatenateGraphFilterFactory
- java.lang.Object
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- org.apache.lucene.analysis.AbstractAnalysisFactory
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- org.apache.lucene.analysis.TokenFilterFactory
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- org.apache.lucene.analysis.miscellaneous.ConcatenateGraphFilterFactory
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public class ConcatenateGraphFilterFactory extends TokenFilterFactory
Factory forConcatenateGraphFilter.preserveSep: For lucene versions lesser thanVersion.LUCENE_8_4_0WhetherConcatenateGraphFilter.SEP_LABELshould separate the input tokens in the concatenated tokentokenSeparator: Separator to use for concatenation. If not present,ConcatenateGraphFilter.DEFAULT_TOKEN_SEPARATORwill be used. If empty, tokens will be concatenated without any separators.preservePositionIncrements: Whether to add an empty token for missing positions. The effect is a consecutiveConcatenateGraphFilter.SEP_LABEL. When false, it's as if there were no missing positions (we pretend the surrounding tokens were adjacent).maxGraphExpansions: If the tokenStream graph has more than this many possible paths through, then we'll throwTooComplexToDeterminizeExceptionto preserve the stability and memory of the machine.
- Since:
- 7.4.0
- See Also:
ConcatenateGraphFilter- SPI Name (case-insensitive: if the name is 'htmlStrip', 'htmlstrip' can be used when looking up the service).
- "concatenateGraph"
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Field Summary
Fields Modifier and Type Field Description static StringNAMESPI name-
Fields inherited from class org.apache.lucene.analysis.AbstractAnalysisFactory
LUCENE_MATCH_VERSION_PARAM, luceneMatchVersion
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Constructor Summary
Constructors Constructor Description ConcatenateGraphFilterFactory()Default ctor for compatibility with SPIConcatenateGraphFilterFactory(Map<String,String> args)
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description TokenStreamcreate(TokenStream input)protected CharactergetCharacter(Map<String,String> args, String name, Character defaultVal)-
Methods inherited from class org.apache.lucene.analysis.TokenFilterFactory
availableTokenFilters, findSPIName, forName, lookupClass, normalize, reloadTokenFilters
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Methods inherited from class org.apache.lucene.analysis.AbstractAnalysisFactory
defaultCtorException, get, get, get, get, get, getBoolean, getChar, getClassArg, getFloat, getInt, getLines, getLuceneMatchVersion, getOriginalArgs, getPattern, getSet, getSnowballWordSet, getWordSet, isExplicitLuceneMatchVersion, require, require, require, requireBoolean, requireChar, requireFloat, requireInt, setExplicitLuceneMatchVersion, splitAt, splitFileNames
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Field Detail
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NAME
public static final String NAME
SPI name- See Also:
- Constant Field Values
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Method Detail
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create
public TokenStream create(TokenStream input)
- Specified by:
createin classTokenFilterFactory
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