public final class RussianAnalyzer extends StopwordAnalyzerBase
Analyzer
for Russian language.
Supports an external list of stopwords (words that will not be indexed at all). A default set of stopwords is used unless an alternative list is specified.
Analyzer.ReuseStrategy, Analyzer.TokenStreamComponents
Modifier and Type | Field and Description |
---|---|
static String |
DEFAULT_STOPWORD_FILE
File containing default Russian stopwords.
|
stopwords
GLOBAL_REUSE_STRATEGY, PER_FIELD_REUSE_STRATEGY
Constructor and Description |
---|
RussianAnalyzer() |
RussianAnalyzer(CharArraySet stopwords)
Builds an analyzer with the given stop words
|
RussianAnalyzer(CharArraySet stopwords,
CharArraySet stemExclusionSet)
Builds an analyzer with the given stop words
|
Modifier and Type | Method and Description |
---|---|
protected Analyzer.TokenStreamComponents |
createComponents(String fieldName)
Creates
Analyzer.TokenStreamComponents
used to tokenize all the text in the provided Reader . |
static CharArraySet |
getDefaultStopSet()
Returns an unmodifiable instance of the default stop-words set.
|
getStopwordSet, loadStopwordSet, loadStopwordSet, loadStopwordSet
close, getOffsetGap, getPositionIncrementGap, getReuseStrategy, getVersion, initReader, setVersion, tokenStream, tokenStream
public static final String DEFAULT_STOPWORD_FILE
public RussianAnalyzer()
public RussianAnalyzer(CharArraySet stopwords)
stopwords
- a stopword setpublic RussianAnalyzer(CharArraySet stopwords, CharArraySet stemExclusionSet)
stopwords
- a stopword setstemExclusionSet
- a set of words not to be stemmedpublic static CharArraySet getDefaultStopSet()
protected Analyzer.TokenStreamComponents createComponents(String fieldName)
Analyzer.TokenStreamComponents
used to tokenize all the text in the provided Reader
.createComponents
in class Analyzer
fieldName
- the name of the fields content passed to the
Analyzer.TokenStreamComponents
sink as a readerAnalyzer.TokenStreamComponents
built from a StandardTokenizer
filtered with
StandardFilter
, LowerCaseFilter
, StopFilter
, SetKeywordMarkerFilter
if a stem exclusion set is
provided, and SnowballFilter
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