Package org.apache.lucene.analysis.bg

Class BulgarianAnalyzer

  • All Implemented Interfaces:
    Closeable, AutoCloseable
    public final class BulgarianAnalyzer
extends org.apache.lucene.analysis.StopwordAnalyzerBase
    Analyzer for Bulgarian.

    This analyzer implements light-stemming as specified by: Searching Strategies for the Bulgarian Language http://members.unine.ch/jacques.savoy/Papers/BUIR.pdf

    • Nested Class Summary

      • Nested classes/interfaces inherited from class org.apache.lucene.analysis.ReusableAnalyzerBase

        org.apache.lucene.analysis.ReusableAnalyzerBase.TokenStreamComponents

    • Field Summary

      Fields 
      Modifier and Type Field Description
      static String DEFAULT_STOPWORD_FILE
      File containing default Bulgarian stopwords.
      static String STOPWORDS_COMMENT
      Deprecated.
      use WordlistLoader.getWordSet(Reader, String, Version) directly

      • Fields inherited from class org.apache.lucene.analysis.StopwordAnalyzerBase

        matchVersion, stopwords

    • Constructor Summary

      Constructors 
      Constructor Description
      BulgarianAnalyzer​(org.apache.lucene.util.Version matchVersion)
      Builds an analyzer with the default stop words: DEFAULT_STOPWORD_FILE.
      BulgarianAnalyzer​(org.apache.lucene.util.Version matchVersion, Set<?> stopwords)
      Builds an analyzer with the given stop words.
      BulgarianAnalyzer​(org.apache.lucene.util.Version matchVersion, Set<?> stopwords, Set<?> stemExclusionSet)
      Builds an analyzer with the given stop words and a stem exclusion set.

    • Method Summary

      All Methods Static Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      org.apache.lucene.analysis.ReusableAnalyzerBase.TokenStreamComponents createComponents​(String fieldName, Reader reader)
      Creates a ReusableAnalyzerBase.TokenStreamComponents which tokenizes all the text in the provided Reader.
      static Set<?> getDefaultStopSet()
      Returns an unmodifiable instance of the default stop-words set.

      • Methods inherited from class org.apache.lucene.analysis.StopwordAnalyzerBase

        getStopwordSet, loadStopwordSet, loadStopwordSet, loadStopwordSet

      • Methods inherited from class org.apache.lucene.analysis.ReusableAnalyzerBase

        initReader, reusableTokenStream, tokenStream

      • Methods inherited from class org.apache.lucene.analysis.Analyzer

        close, getOffsetGap, getPositionIncrementGap, getPreviousTokenStream, setPreviousTokenStream

    • Field Detail

      • 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

      • STOPWORDS_COMMENT

        @Deprecated
public static final String STOPWORDS_COMMENT
        Deprecated.
        use WordlistLoader.getWordSet(Reader, String, Version) directly
        The comment character in the stopwords file. All lines prefixed with this will be ignored
        See Also:
        Constant Field Values

    • Constructor Detail

      • BulgarianAnalyzer

        public BulgarianAnalyzer​(org.apache.lucene.util.Version matchVersion)
        Builds an analyzer with the default stop words: DEFAULT_STOPWORD_FILE.

      • BulgarianAnalyzer

        public BulgarianAnalyzer​(org.apache.lucene.util.Version matchVersion,
                         Set<?> stopwords)
        Builds an analyzer with the given stop words.

      • BulgarianAnalyzer

        public BulgarianAnalyzer​(org.apache.lucene.util.Version matchVersion,
                         Set<?> stopwords,
                         Set<?> 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 a KeywordMarkerFilter before BulgarianStemFilter.

    • Method Detail

      • getDefaultStopSet

        public static Set<?> getDefaultStopSet()
        Returns an unmodifiable instance of the default stop-words set.
        Returns:
        an unmodifiable instance of the default stop-words set.

      • createComponents

        public org.apache.lucene.analysis.ReusableAnalyzerBase.TokenStreamComponents createComponents​(String fieldName,
                                                                                              Reader reader)
        Creates a ReusableAnalyzerBase.TokenStreamComponents which tokenizes all the text in the provided Reader.
        Specified by:
        createComponents in class org.apache.lucene.analysis.ReusableAnalyzerBase
        Returns:
        A ReusableAnalyzerBase.TokenStreamComponents built from an StandardTokenizer filtered with StandardFilter, LowerCaseFilter, StopFilter , KeywordMarkerFilter if a stem exclusion set is provided and BulgarianStemFilter.