Class ConcatenateGraphFilterFactory
java.lang.Object
org.apache.lucene.analysis.AbstractAnalysisFactory
org.apache.lucene.analysis.TokenFilterFactory
org.apache.lucene.analysis.miscellaneous.ConcatenateGraphFilterFactory
Factory for
ConcatenateGraphFilter
.
preserveSep
: For lucene versions lesser thanVersion.LUCENE_8_4_0
WhetherConcatenateGraphFilter.SEP_LABEL
should separate the input tokens in the concatenated tokentokenSeparator
: Separator to use for concatenation. If not present,ConcatenateGraphFilter.DEFAULT_TOKEN_SEPARATOR
will 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 throwTooComplexToDeterminizeException
to preserve the stability and memory of the machine.
- Since:
- 7.4.0
- See Also:
- 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 inherited from class org.apache.lucene.analysis.AbstractAnalysisFactory
LUCENE_MATCH_VERSION_PARAM, luceneMatchVersion
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Constructor Summary
ConstructorDescriptionDefault ctor for compatibility with SPI -
Method Summary
Methods inherited from class org.apache.lucene.analysis.TokenFilterFactory
availableTokenFilters, findSPIName, forName, lookupClass, normalize, reloadTokenFilters
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 Details
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NAME
SPI name- See Also:
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Constructor Details
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ConcatenateGraphFilterFactory
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ConcatenateGraphFilterFactory
public ConcatenateGraphFilterFactory()Default ctor for compatibility with SPI
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Method Details
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create
- Specified by:
create
in classTokenFilterFactory
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getCharacter
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