Package org.apache.lucene.analysis.ru
Class RussianAnalyzer
java.lang.Object
org.apache.lucene.analysis.Analyzer
org.apache.lucene.analysis.StopwordAnalyzerBase
org.apache.lucene.analysis.ru.RussianAnalyzer
- All Implemented Interfaces:
Closeable,AutoCloseable
Analyzer for Russian language.
Supports an external list of stopwords (words that will not be indexed at all). A default set of stopwords is used unless an alternative list is specified.
- Since:
- 3.1
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Nested Class Summary
Nested classes/interfaces inherited from class org.apache.lucene.analysis.Analyzer
Analyzer.ReuseStrategy, Analyzer.TokenStreamComponents -
Field Summary
FieldsFields inherited from class org.apache.lucene.analysis.StopwordAnalyzerBase
stopwordsFields inherited from class org.apache.lucene.analysis.Analyzer
GLOBAL_REUSE_STRATEGY, PER_FIELD_REUSE_STRATEGY -
Constructor Summary
ConstructorsConstructorDescriptionRussianAnalyzer(CharArraySet stopwords) Builds an analyzer with the given stop wordsRussianAnalyzer(CharArraySet stopwords, CharArraySet stemExclusionSet) Builds an analyzer with the given stop words -
Method Summary
Modifier and TypeMethodDescriptionprotected Analyzer.TokenStreamComponentscreateComponents(String fieldName) CreatesAnalyzer.TokenStreamComponentsused to tokenize all the text in the providedReader.static CharArraySetReturns an unmodifiable instance of the default stop-words set.protected TokenStreamnormalize(String fieldName, TokenStream in) Methods inherited from class org.apache.lucene.analysis.StopwordAnalyzerBase
getStopwordSet, loadStopwordSet, loadStopwordSetMethods inherited from class org.apache.lucene.analysis.Analyzer
attributeFactory, close, getOffsetGap, getPositionIncrementGap, getReuseStrategy, initReader, initReaderForNormalization, normalize, tokenStream, tokenStream
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Field Details
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DEFAULT_STOPWORD_FILE
File containing default Russian stopwords.- See Also:
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Constructor Details
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RussianAnalyzer
public RussianAnalyzer() -
RussianAnalyzer
Builds an analyzer with the given stop words- Parameters:
stopwords- a stopword set
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RussianAnalyzer
Builds an analyzer with the given stop words- Parameters:
stopwords- a stopword setstemExclusionSet- a set of words not to be stemmed
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Method Details
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getDefaultStopSet
Returns an unmodifiable instance of the default stop-words set.- Returns:
- an unmodifiable instance of the default stop-words set.
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createComponents
CreatesAnalyzer.TokenStreamComponentsused to tokenize all the text in the providedReader.- Specified by:
createComponentsin classAnalyzer- Returns:
Analyzer.TokenStreamComponentsbuilt from aStandardTokenizerfiltered withLowerCaseFilter,StopFilter,SetKeywordMarkerFilterif a stem exclusion set is provided, andSnowballFilter
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normalize
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