org.apache.lucene.analysis.ru
Class RussianAnalyzer
java.lang.Object
org.apache.lucene.analysis.Analyzer
org.apache.lucene.analysis.util.StopwordAnalyzerBase
org.apache.lucene.analysis.ru.RussianAnalyzer
- All Implemented Interfaces:
- Closeable
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.
You must specify the required Version
compatibility when creating RussianAnalyzer:
- As of 3.1, StandardTokenizer is used, Snowball stemming is done with
SnowballFilter, and Snowball stopwords are used by default.
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
DEFAULT_STOPWORD_FILE
public static final String DEFAULT_STOPWORD_FILE
- File containing default Russian stopwords.
- See Also:
- Constant Field Values
RussianAnalyzer
public RussianAnalyzer(Version matchVersion)
RussianAnalyzer
public RussianAnalyzer(Version matchVersion,
CharArraySet stopwords)
- Builds an analyzer with the given stop words
- Parameters:
matchVersion
- lucene compatibility versionstopwords
- a stopword set
RussianAnalyzer
public RussianAnalyzer(Version matchVersion,
CharArraySet stopwords,
CharArraySet stemExclusionSet)
- Builds an analyzer with the given stop words
- Parameters:
matchVersion
- lucene compatibility versionstopwords
- a stopword setstemExclusionSet
- a set of words not to be stemmed
getDefaultStopSet
public static CharArraySet getDefaultStopSet()
- Returns an unmodifiable instance of the default stop-words set.
- Returns:
- an unmodifiable instance of the default stop-words set.
createComponents
protected Analyzer.TokenStreamComponents createComponents(String fieldName,
Reader reader)
- Creates
Analyzer.TokenStreamComponents
used to tokenize all the text in the provided Reader
.
- Specified by:
createComponents
in class Analyzer
- Returns:
Analyzer.TokenStreamComponents
built from a StandardTokenizer
filtered with
StandardFilter
, LowerCaseFilter
, StopFilter
, SetKeywordMarkerFilter
if a stem exclusion set is
provided, and SnowballFilter
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