Package org.apache.lucene.analysis.icu
Class ICUNormalizer2FilterFactory
java.lang.Object
org.apache.lucene.analysis.AbstractAnalysisFactory
org.apache.lucene.analysis.TokenFilterFactory
org.apache.lucene.analysis.icu.ICUNormalizer2FilterFactory
Factory for
ICUNormalizer2Filter
Supports the following attributes:
- form: A Unicode Normalization Form, one of 'nfc','nfkc', 'nfkc_cf'. Default is nfkc_cf.
- mode: Either 'compose' or 'decompose'. Default is compose. Use "decompose" with nfc or nfkc, to get nfd or nfkd, respectively.
- filter: A
UnicodeSet
pattern. Codepoints outside the set are always left unchanged. Default is [] (the null set, no filtering).
- Since:
- 3.1.0
- See Also:
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Field Summary
FieldsModifier and TypeFieldDescriptionstatic final String
SPI nameprivate final com.ibm.icu.text.Normalizer2
Fields inherited from class org.apache.lucene.analysis.AbstractAnalysisFactory
LUCENE_MATCH_VERSION_PARAM, luceneMatchVersion
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Constructor Summary
ConstructorsConstructorDescriptionDefault ctor for compatibility with SPICreates a new ICUNormalizer2FilterFactory -
Method Summary
Modifier and TypeMethodDescriptioncreate
(TokenStream input) Transform the specified input TokenStreamnormalize
(TokenStream input) Normalize the specified input TokenStream While the default implementation returns input unchanged, filters that should be applied at normalization time can delegate tocreate
method.Methods inherited from class org.apache.lucene.analysis.TokenFilterFactory
availableTokenFilters, findSPIName, forName, lookupClass, 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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normalizer
private final com.ibm.icu.text.Normalizer2 normalizer
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Constructor Details
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ICUNormalizer2FilterFactory
Creates a new ICUNormalizer2FilterFactory -
ICUNormalizer2FilterFactory
public ICUNormalizer2FilterFactory()Default ctor for compatibility with SPI
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Method Details
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create
Description copied from class:TokenFilterFactory
Transform the specified input TokenStream- Specified by:
create
in classTokenFilterFactory
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normalize
Description copied from class:TokenFilterFactory
Normalize the specified input TokenStream While the default implementation returns input unchanged, filters that should be applied at normalization time can delegate tocreate
method.- Overrides:
normalize
in classTokenFilterFactory
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