Package org.apache.lucene.analysis.bg
Class BulgarianAnalyzer
- java.lang.Object
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- org.apache.lucene.analysis.Analyzer
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- org.apache.lucene.analysis.StopwordAnalyzerBase
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- org.apache.lucene.analysis.bg.BulgarianAnalyzer
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- All Implemented Interfaces:
Closeable,AutoCloseable
public final class BulgarianAnalyzer extends StopwordAnalyzerBase
Analyzerfor Bulgarian.This analyzer implements light-stemming as specified by: Searching Strategies for the Bulgarian Language http://members.unine.ch/jacques.savoy/Papers/BUIR.pdf
- Since:
- 3.1
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Nested Class Summary
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Nested classes/interfaces inherited from class org.apache.lucene.analysis.Analyzer
Analyzer.ReuseStrategy, Analyzer.TokenStreamComponents
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Field Summary
Fields Modifier and Type Field Description static StringDEFAULT_STOPWORD_FILEFile containing default Bulgarian stopwords.-
Fields inherited from class org.apache.lucene.analysis.StopwordAnalyzerBase
stopwords
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Fields inherited from class org.apache.lucene.analysis.Analyzer
GLOBAL_REUSE_STRATEGY, PER_FIELD_REUSE_STRATEGY
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Constructor Summary
Constructors Constructor Description BulgarianAnalyzer()Builds an analyzer with the default stop words:DEFAULT_STOPWORD_FILE.BulgarianAnalyzer(CharArraySet stopwords)Builds an analyzer with the given stop words.BulgarianAnalyzer(CharArraySet stopwords, CharArraySet stemExclusionSet)Builds an analyzer with the given stop words and a stem exclusion set.
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Method Summary
All Methods Static Methods Instance Methods Concrete Methods Modifier and Type Method Description Analyzer.TokenStreamComponentscreateComponents(String fieldName)Creates aAnalyzer.TokenStreamComponentswhich tokenizes all the text in the providedReader.static CharArraySetgetDefaultStopSet()Returns 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, loadStopwordSet, loadStopwordSet
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Methods inherited from class org.apache.lucene.analysis.Analyzer
attributeFactory, close, getOffsetGap, getPositionIncrementGap, getReuseStrategy, initReader, initReaderForNormalization, normalize, tokenStream, tokenStream
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Field Detail
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DEFAULT_STOPWORD_FILE
public static final String DEFAULT_STOPWORD_FILE
File containing default Bulgarian stopwords.Default stopword list is from http://members.unine.ch/jacques.savoy/clef/index.html The stopword list is BSD-Licensed.
- See Also:
- Constant Field Values
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Constructor Detail
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BulgarianAnalyzer
public BulgarianAnalyzer()
Builds an analyzer with the default stop words:DEFAULT_STOPWORD_FILE.
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BulgarianAnalyzer
public BulgarianAnalyzer(CharArraySet stopwords)
Builds an analyzer with the given stop words.
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BulgarianAnalyzer
public BulgarianAnalyzer(CharArraySet stopwords, CharArraySet stemExclusionSet)
Builds an analyzer with the given stop words and a stem exclusion set. If a stem exclusion set is provided this analyzer will add aSetKeywordMarkerFilterbeforeBulgarianStemFilter.
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Method Detail
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getDefaultStopSet
public static CharArraySet 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
public Analyzer.TokenStreamComponents createComponents(String fieldName)
Creates aAnalyzer.TokenStreamComponentswhich tokenizes all the text in the providedReader.- Specified by:
createComponentsin classAnalyzer- Returns:
- A
Analyzer.TokenStreamComponentsbuilt from anStandardTokenizerfiltered withLowerCaseFilter,StopFilter,SetKeywordMarkerFilterif a stem exclusion set is provided andBulgarianStemFilter.
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normalize
protected TokenStream normalize(String fieldName, TokenStream in)
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