Class ClassicAnalyzer
java.lang.Object
org.apache.lucene.analysis.Analyzer
org.apache.lucene.analysis.StopwordAnalyzerBase
org.apache.lucene.analysis.classic.ClassicAnalyzer
- All Implemented Interfaces:
Closeable
,AutoCloseable
Filters
ClassicTokenizer
with ClassicFilter
, LowerCaseFilter
and StopFilter
, using a list of English stop words.
ClassicAnalyzer was named StandardAnalyzer in Lucene versions prior to 3.1. As of 3.1, StandardAnalyzer
implements Unicode text segmentation, as specified by UAX#29.
- 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 int
Default maximum allowed token lengthstatic final CharArraySet
An unmodifiable set containing some common English words that are usually not useful for searching.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 (STOP_WORDS_SET
).ClassicAnalyzer
(Reader stopwords) Builds an analyzer with the stop words from the given reader.ClassicAnalyzer
(CharArraySet stopWords) Builds an analyzer with the given stop words. -
Method Summary
Modifier and TypeMethodDescriptionprotected Analyzer.TokenStreamComponents
createComponents
(String fieldName) int
protected TokenStream
normalize
(String fieldName, TokenStream in) void
setMaxTokenLength
(int length) Set maximum allowed token length.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_MAX_TOKEN_LENGTH
public static final int DEFAULT_MAX_TOKEN_LENGTHDefault maximum allowed token length- See Also:
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STOP_WORDS_SET
An unmodifiable set containing some common English words that are usually not useful for searching.
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Constructor Details
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ClassicAnalyzer
Builds an analyzer with the given stop words.- Parameters:
stopWords
- stop words
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ClassicAnalyzer
public ClassicAnalyzer()Builds an analyzer with the default stop words (STOP_WORDS_SET
). -
ClassicAnalyzer
Builds an analyzer with the stop words from the given reader.- Parameters:
stopwords
- Reader to read stop words from- Throws:
IOException
- See Also:
-
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Method Details
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setMaxTokenLength
public void setMaxTokenLength(int length) Set maximum allowed token length. If a token is seen that exceeds this length then it is discarded. This setting only takes effect the next time tokenStream or tokenStream is called. -
getMaxTokenLength
public int getMaxTokenLength()- See Also:
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createComponents
- Specified by:
createComponents
in classAnalyzer
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normalize
-