public final class ClassicAnalyzer extends StopwordAnalyzerBase
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.Analyzer.ReuseStrategy, Analyzer.TokenStreamComponents
Modifier and Type | Field and Description |
---|---|
static int |
DEFAULT_MAX_TOKEN_LENGTH
Default maximum allowed token length
|
static CharArraySet |
STOP_WORDS_SET
An unmodifiable set containing some common English words that are usually not
useful for searching.
|
stopwords
GLOBAL_REUSE_STRATEGY, PER_FIELD_REUSE_STRATEGY
Constructor and Description |
---|
ClassicAnalyzer()
Builds an analyzer with the default stop words (
STOP_WORDS_SET ). |
ClassicAnalyzer(CharArraySet stopWords)
Builds an analyzer with the given stop words.
|
ClassicAnalyzer(Reader stopwords)
Builds an analyzer with the stop words from the given reader.
|
Modifier and Type | Method and Description |
---|---|
protected Analyzer.TokenStreamComponents |
createComponents(String fieldName) |
int |
getMaxTokenLength() |
protected TokenStream |
normalize(String fieldName,
TokenStream in) |
void |
setMaxTokenLength(int length)
Set maximum allowed token length.
|
getStopwordSet, loadStopwordSet, loadStopwordSet, loadStopwordSet
attributeFactory, close, getOffsetGap, getPositionIncrementGap, getReuseStrategy, getVersion, initReader, initReaderForNormalization, normalize, setVersion, tokenStream, tokenStream
public static final int DEFAULT_MAX_TOKEN_LENGTH
public static final CharArraySet STOP_WORDS_SET
public ClassicAnalyzer(CharArraySet stopWords)
stopWords
- stop wordspublic ClassicAnalyzer()
STOP_WORDS_SET
).public ClassicAnalyzer(Reader stopwords) throws IOException
stopwords
- Reader to read stop words fromIOException
WordlistLoader.getWordSet(Reader)
public void setMaxTokenLength(int length)
public int getMaxTokenLength()
setMaxTokenLength(int)
protected Analyzer.TokenStreamComponents createComponents(String fieldName)
createComponents
in class Analyzer
protected TokenStream normalize(String fieldName, TokenStream in)
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