Package org.apache.lucene.analysis.en

Class EnglishAnalyzer

java.lang.Object

org.apache.lucene.analysis.Analyzer

org.apache.lucene.analysis.util.StopwordAnalyzerBase

org.apache.lucene.analysis.en.EnglishAnalyzer

All Implemented Interfaces:

java.io.Closeable, java.lang.AutoCloseable

public final class EnglishAnalyzer
extends StopwordAnalyzerBase

Analyzer for English.

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.lucene.analysis.Analyzer

Analyzer.GlobalReuseStrategy, Analyzer.PerFieldReuseStrategy, Analyzer.ReuseStrategy, Analyzer.TokenStreamComponents

Field Summary

Fields inherited from class org.apache.lucene.analysis.Analyzer

GLOBAL_REUSE_STRATEGY, PER_FIELD_REUSE_STRATEGY

Constructor Summary

Constructors

Constructor	Description
EnglishAnalyzer(Version matchVersion)	Builds an analyzer with the default stop words: getDefaultStopSet().
EnglishAnalyzer(Version matchVersion, CharArraySet stopwords)	Builds an analyzer with the given stop words.
EnglishAnalyzer(Version matchVersion, CharArraySet stopwords, CharArraySet stemExclusionSet)	Builds an analyzer with the given stop words.

Method Summary

Modifier and Type	Method	Description
static CharArraySet	getDefaultStopSet()	Returns an unmodifiable instance of the default stop words set.

Methods inherited from class org.apache.lucene.analysis.util.StopwordAnalyzerBase

getStopwordSet

Methods inherited from class org.apache.lucene.analysis.Analyzer

close, getOffsetGap, getPositionIncrementGap, getReuseStrategy, tokenStream, tokenStream

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

EnglishAnalyzer

public EnglishAnalyzer(Version matchVersion)

Builds an analyzer with the default stop words: getDefaultStopSet().

EnglishAnalyzer

public EnglishAnalyzer(Version matchVersion,
                       CharArraySet stopwords)

Builds an analyzer with the given stop words.

Parameters:

matchVersion - lucene compatibility version

stopwords - a stopword set

EnglishAnalyzer

public EnglishAnalyzer(Version matchVersion,
                       CharArraySet stopwords,
                       CharArraySet stemExclusionSet)

Builds an analyzer with the given stop words. If a non-empty stem exclusion set is provided this analyzer will add a SetKeywordMarkerFilter before stemming.

Parameters:

matchVersion - lucene compatibility version

stopwords - a stopword set

stemExclusionSet - a set of terms not to be stemmed

Method Detail

getDefaultStopSet

public static CharArraySet getDefaultStopSet()

Returns an unmodifiable instance of the default stop words set.

Returns:

default stop words set.