Package org.apache.lucene.analysis.th
Class ThaiAnalyzer
java.lang.Object
org.apache.lucene.analysis.Analyzer
org.apache.lucene.analysis.StopwordAnalyzerBase
org.apache.lucene.analysis.th.ThaiAnalyzer
- All Implemented Interfaces:
Closeable
,AutoCloseable
Analyzer
for Thai language. It uses BreakIterator
to break words.- Since:
- 3.1
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Nested Class Summary
Nested ClassesModifier and TypeClassDescriptionprivate static class
Atomically loads the DEFAULT_STOP_SET in a lazy fashion once the outer class accesses the static final set the first time.;Nested classes/interfaces inherited from class org.apache.lucene.analysis.Analyzer
Analyzer.ReuseStrategy, Analyzer.TokenStreamComponents
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Field Summary
FieldsModifier and TypeFieldDescriptionstatic final String
File containing default Thai stopwords.private static final String
The comment character in the stopwords file.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
ConstructorsConstructorDescriptionBuilds an analyzer with the default stop words.ThaiAnalyzer
(CharArraySet stopwords) Builds an analyzer with the given stop words. -
Method Summary
Modifier and TypeMethodDescriptionprotected Analyzer.TokenStreamComponents
createComponents
(String fieldName) CreatesAnalyzer.TokenStreamComponents
used to tokenize 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) Wrap the givenTokenStream
in order to apply normalization filters.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 Thai stopwords.- See Also:
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STOPWORDS_COMMENT
The comment character in the stopwords file. All lines prefixed with this will be ignored.- See Also:
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Constructor Details
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ThaiAnalyzer
public ThaiAnalyzer()Builds an analyzer with the default stop words. -
ThaiAnalyzer
Builds an analyzer with the given stop words.- Parameters:
stopwords
- a stopword set
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Method Details
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getDefaultStopSet
Returns an unmodifiable instance of the default stop words set.- Returns:
- default stop words set.
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createComponents
CreatesAnalyzer.TokenStreamComponents
used to tokenize all the text in the providedReader
.- Specified by:
createComponents
in classAnalyzer
- Parameters:
fieldName
- the name of the fields content passed to theAnalyzer.TokenStreamComponents
sink as a reader- Returns:
Analyzer.TokenStreamComponents
built from aThaiTokenizer
filtered withLowerCaseFilter
,DecimalDigitFilter
andStopFilter
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normalize
Description copied from class:Analyzer
Wrap the givenTokenStream
in order to apply normalization filters. The default implementation returns theTokenStream
as-is. This is used byAnalyzer.normalize(String, String)
.
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