Package org.apache.lucene.analysis.en
Class EnglishAnalyzer
- java.lang.Object
-
- org.apache.lucene.analysis.Analyzer
-
- org.apache.lucene.analysis.ReusableAnalyzerBase
-
- org.apache.lucene.analysis.StopwordAnalyzerBase
-
- org.apache.lucene.analysis.en.EnglishAnalyzer
-
- All Implemented Interfaces:
Closeable
,AutoCloseable
public final class EnglishAnalyzer extends org.apache.lucene.analysis.StopwordAnalyzerBase
Analyzer
for English.
-
-
Constructor Summary
Constructors Constructor Description EnglishAnalyzer(org.apache.lucene.util.Version matchVersion)
Builds an analyzer with the default stop words:getDefaultStopSet()
.EnglishAnalyzer(org.apache.lucene.util.Version matchVersion, Set<?> stopwords)
Builds an analyzer with the given stop words.EnglishAnalyzer(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)
Creates aReusableAnalyzerBase.TokenStreamComponents
which tokenizes 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
-
-
-
-
Constructor Detail
-
EnglishAnalyzer
public EnglishAnalyzer(org.apache.lucene.util.Version matchVersion)
Builds an analyzer with the default stop words:getDefaultStopSet()
.
-
EnglishAnalyzer
public EnglishAnalyzer(org.apache.lucene.util.Version matchVersion, Set<?> stopwords)
Builds an analyzer with the given stop words.- Parameters:
matchVersion
- lucene compatibility versionstopwords
- a stopword set
-
EnglishAnalyzer
public EnglishAnalyzer(org.apache.lucene.util.Version matchVersion, Set<?> stopwords, Set<?> stemExclusionSet)
Builds an analyzer with the given stop words. If a non-empty stem exclusion set is provided this analyzer will add aKeywordMarkerFilter
before stemming.- Parameters:
matchVersion
- lucene compatibility versionstopwords
- a stopword setstemExclusionSet
- a set of terms not to be stemmed
-
-
Method Detail
-
getDefaultStopSet
public static Set<?> getDefaultStopSet()
Returns an unmodifiable instance of the default stop words set.- Returns:
- default stop words set.
-
createComponents
protected org.apache.lucene.analysis.ReusableAnalyzerBase.TokenStreamComponents createComponents(String fieldName, Reader reader)
Creates aReusableAnalyzerBase.TokenStreamComponents
which tokenizes all the text in the providedReader
.- Specified by:
createComponents
in classorg.apache.lucene.analysis.ReusableAnalyzerBase
- Returns:
- A
ReusableAnalyzerBase.TokenStreamComponents
built from anStandardTokenizer
filtered withStandardFilter
,LowerCaseFilter
,StopFilter
,KeywordMarkerFilter
if a stem exclusion set is provided andPorterStemFilter
.
-
-