Package org.apache.lucene.analysis.ru
Class RussianAnalyzer
- java.lang.Object
-
- org.apache.lucene.analysis.Analyzer
-
- org.apache.lucene.analysis.ReusableAnalyzerBase
-
- org.apache.lucene.analysis.StopwordAnalyzerBase
-
- org.apache.lucene.analysis.ru.RussianAnalyzer
-
- All Implemented Interfaces:
Closeable
,AutoCloseable
public final class RussianAnalyzer extends org.apache.lucene.analysis.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.
-
-
Field Summary
Fields Modifier and Type Field Description static String
DEFAULT_STOPWORD_FILE
File containing default Russian stopwords.
-
Constructor Summary
Constructors Constructor Description RussianAnalyzer(org.apache.lucene.util.Version matchVersion)
RussianAnalyzer(org.apache.lucene.util.Version matchVersion, String... stopwords)
Deprecated.useRussianAnalyzer(Version, Set)
insteadRussianAnalyzer(org.apache.lucene.util.Version matchVersion, Map<?,?> stopwords)
Deprecated.useRussianAnalyzer(Version, Set)
insteadRussianAnalyzer(org.apache.lucene.util.Version matchVersion, Set<?> stopwords)
Builds an analyzer with the given stop wordsRussianAnalyzer(org.apache.lucene.util.Version matchVersion, Set<?> stopwords, Set<?> stemExclusionSet)
Builds an analyzer with the given stop words
-
Method Summary
All Methods Static Methods Instance Methods Concrete Methods Modifier and Type Method Description protected org.apache.lucene.analysis.ReusableAnalyzerBase.TokenStreamComponents
createComponents(String fieldName, Reader reader)
CreatesReusableAnalyzerBase.TokenStreamComponents
used to tokenize all the text in the providedReader
.static Set<?>
getDefaultStopSet()
Returns an unmodifiable instance of the default stop-words set.-
Methods inherited from class org.apache.lucene.analysis.StopwordAnalyzerBase
getStopwordSet, loadStopwordSet, loadStopwordSet, loadStopwordSet
-
Methods inherited from class org.apache.lucene.analysis.ReusableAnalyzerBase
initReader, reusableTokenStream, tokenStream
-
-
-
-
Field Detail
-
DEFAULT_STOPWORD_FILE
public static final String DEFAULT_STOPWORD_FILE
File containing default Russian stopwords.- See Also:
- Constant Field Values
-
-
Constructor Detail
-
RussianAnalyzer
public RussianAnalyzer(org.apache.lucene.util.Version matchVersion)
-
RussianAnalyzer
@Deprecated public RussianAnalyzer(org.apache.lucene.util.Version matchVersion, String... stopwords)
Deprecated.useRussianAnalyzer(Version, Set)
insteadBuilds an analyzer with the given stop words.
-
RussianAnalyzer
public RussianAnalyzer(org.apache.lucene.util.Version matchVersion, Set<?> stopwords)
Builds an analyzer with the given stop words- Parameters:
matchVersion
- lucene compatibility versionstopwords
- a stopword set
-
RussianAnalyzer
public RussianAnalyzer(org.apache.lucene.util.Version matchVersion, Set<?> stopwords, Set<?> 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
-
RussianAnalyzer
@Deprecated public RussianAnalyzer(org.apache.lucene.util.Version matchVersion, Map<?,?> stopwords)
Deprecated.useRussianAnalyzer(Version, Set)
insteadBuilds an analyzer with the given stop words. TODO: create a Set version of this ctor
-
-
Method Detail
-
getDefaultStopSet
public static Set<?> getDefaultStopSet()
Returns an unmodifiable instance of the default stop-words set.- Returns:
- an unmodifiable instance of the default stop-words set.
-
createComponents
protected org.apache.lucene.analysis.ReusableAnalyzerBase.TokenStreamComponents createComponents(String fieldName, Reader reader)
CreatesReusableAnalyzerBase.TokenStreamComponents
used to tokenize all the text in the providedReader
.- Specified by:
createComponents
in classorg.apache.lucene.analysis.ReusableAnalyzerBase
- Returns:
ReusableAnalyzerBase.TokenStreamComponents
built from aStandardTokenizer
filtered withStandardFilter
,LowerCaseFilter
,StopFilter
,KeywordMarkerFilter
if a stem exclusion set is provided, andSnowballFilter
-
-