Class ConcatenateGraphFilterFactory
- java.lang.Object
-
- org.apache.lucene.analysis.util.AbstractAnalysisFactory
-
- org.apache.lucene.analysis.util.TokenFilterFactory
-
- org.apache.lucene.analysis.miscellaneous.ConcatenateGraphFilterFactory
-
public class ConcatenateGraphFilterFactory extends TokenFilterFactory
Factory forConcatenateGraphFilter
.- preserveSep:
For lucene versions lesser than
Version.LUCENE_8_4_0
WhetherConcatenateGraphFilter.SEP_LABEL
should separate the input tokens in the concatenated token - tokenSeparator:
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 consecutive
ConcatenateGraphFilter.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 throw
TooComplexToDeterminizeException
to preserve the stability and memory of the machine.
- Since:
- 7.4.0
- See Also:
ConcatenateGraphFilter
- SPI Name (Note: This is case-insensitive. e.g., if the name is 'htmlStrip', 'htmlstrip' can be used when looking up the service):
- "concatenateGraph"
- preserveSep:
For lucene versions lesser than
-
-
Field Summary
Fields Modifier and Type Field Description static String
NAME
SPI name-
Fields inherited from class org.apache.lucene.analysis.util.AbstractAnalysisFactory
LUCENE_MATCH_VERSION_PARAM, luceneMatchVersion
-
-
Constructor Summary
Constructors Constructor Description ConcatenateGraphFilterFactory(Map<String,String> args)
-
Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description TokenStream
create(TokenStream input)
Transform the specified input TokenStreamprotected Character
getCharacter(Map<String,String> args, String name, Character defaultVal)
-
Methods inherited from class org.apache.lucene.analysis.util.TokenFilterFactory
availableTokenFilters, findSPIName, forName, lookupClass, normalize, reloadTokenFilters
-
Methods inherited from class org.apache.lucene.analysis.util.AbstractAnalysisFactory
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
-
-
-
-
Field Detail
-
NAME
public static final String NAME
SPI name- See Also:
- Constant Field Values
-
-
Method Detail
-
create
public TokenStream create(TokenStream input)
Description copied from class:TokenFilterFactory
Transform the specified input TokenStream- Specified by:
create
in classTokenFilterFactory
-
-