Package org.apache.lucene.analysis.bg
Class BulgarianAnalyzer
java.lang.Object
org.apache.lucene.analysis.Analyzer
org.apache.lucene.analysis.StopwordAnalyzerBase
org.apache.lucene.analysis.bg.BulgarianAnalyzer
- All Implemented Interfaces:
Closeable
,AutoCloseable
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
- 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
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Field Summary
Modifier and TypeFieldDescriptionstatic final String
File containing default Bulgarian stopwords.Fields inherited from class org.apache.lucene.analysis.StopwordAnalyzerBase
stopwords
Fields inherited from class org.apache.lucene.analysis.Analyzer
GLOBAL_REUSE_STRATEGY, PER_FIELD_REUSE_STRATEGY
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Constructor Summary
ConstructorDescriptionBuilds 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. -
Method Summary
Modifier and TypeMethodDescriptioncreateComponents
(String fieldName) Creates aAnalyzer.TokenStreamComponents
which tokenizes all the text in the providedReader
.static CharArraySet
Returns an unmodifiable instance of the default stop-words set.protected TokenStream
normalize
(String fieldName, TokenStream in) Methods inherited from class org.apache.lucene.analysis.StopwordAnalyzerBase
getStopwordSet, loadStopwordSet, loadStopwordSet, loadStopwordSet
Methods 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 Bulgarian stopwords.Default stopword list is from http://members.unine.ch/jacques.savoy/clef/index.html The stopword list is BSD-Licensed.
- See Also:
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Constructor Details
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BulgarianAnalyzer
public BulgarianAnalyzer()Builds an analyzer with the default stop words:DEFAULT_STOPWORD_FILE
. -
BulgarianAnalyzer
Builds an analyzer with the given stop words. -
BulgarianAnalyzer
Builds an analyzer with the given stop words and a stem exclusion set. If a stem exclusion set is provided this analyzer will add aSetKeywordMarkerFilter
beforeBulgarianStemFilter
.
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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
Creates aAnalyzer.TokenStreamComponents
which tokenizes all the text in the providedReader
.- Specified by:
createComponents
in classAnalyzer
- Returns:
- A
Analyzer.TokenStreamComponents
built from anStandardTokenizer
filtered withLowerCaseFilter
,StopFilter
,SetKeywordMarkerFilter
if a stem exclusion set is provided andBulgarianStemFilter
.
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normalize
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