org.jahia.services.search.analyzer

Class GermanSnowballAnalyzer

java.lang.Object

org.apache.lucene.analysis.Analyzer

org.apache.lucene.analysis.ReusableAnalyzerBase

org.apache.lucene.analysis.StopwordAnalyzerBase

org.jahia.services.search.analyzer.GermanSnowballAnalyzer

All Implemented Interfaces:

Closeable, AutoCloseable

public class GermanSnowballAnalyzer
extends org.apache.lucene.analysis.StopwordAnalyzerBase

Filters StandardTokenizer with StandardFilter, LowerCaseFilter, StopFilter, SnowballFilter for German and ASCIIFoldingFilter.

Nested Class Summary

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

org.apache.lucene.analysis.ReusableAnalyzerBase.TokenStreamComponents

Field Summary

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

matchVersion, stopwords

Constructor Summary

Constructors

Constructor and Description
GermanSnowballAnalyzer(org.apache.lucene.util.Version matchVersion) Builds an analyzer with the default stop words: getDefaultStopSet().
GermanSnowballAnalyzer(org.apache.lucene.util.Version matchVersion, Set<?> stopwords) Builds an analyzer with the given stop words
GermanSnowballAnalyzer(org.apache.lucene.util.Version matchVersion, Set<?> stopwords, Set<?> stemExclusionSet) Builds an analyzer with the given stop words

Method Summary

Modifier and Type	Method and Description
protected org.apache.lucene.analysis.ReusableAnalyzerBase.TokenStreamComponents	createComponents(String fieldName, Reader reader) Creates ReusableAnalyzerBase.TokenStreamComponents used to tokenize all the text in the provided Reader.
static Set<?>	getDefaultStopSet() Returns a set of default German-stopwords

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

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

close, getOffsetGap, getPositionIncrementGap, getPreviousTokenStream, setPreviousTokenStream

Methods inherited from class java.lang.Object

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

Constructor Detail

GermanSnowballAnalyzer

public GermanSnowballAnalyzer(org.apache.lucene.util.Version matchVersion)

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

GermanSnowballAnalyzer

public GermanSnowballAnalyzer(org.apache.lucene.util.Version matchVersion,
                              Set<?> stopwords)

Builds an analyzer with the given stop words

Parameters:

matchVersion - lucene compatibility version

stopwords - a stopword set

GermanSnowballAnalyzer

public GermanSnowballAnalyzer(org.apache.lucene.util.Version matchVersion,
                              Set<?> stopwords,
                              Set<?> stemExclusionSet)

Builds an analyzer with the given stop words

Parameters:

matchVersion - lucene compatibility version

stopwords - a stopword set

stemExclusionSet - a stemming exclusion set

Method Detail

getDefaultStopSet

public static final Set<?> getDefaultStopSet()

Returns a set of default German-stopwords

Returns:

a set of default German-stopwords

createComponents

protected org.apache.lucene.analysis.ReusableAnalyzerBase.TokenStreamComponents createComponents(String fieldName,
                                                                                                 Reader reader)

Creates ReusableAnalyzerBase.TokenStreamComponents used to tokenize all the text in the provided Reader.

Specified by:

createComponents in class org.apache.lucene.analysis.ReusableAnalyzerBase

Returns:

ReusableAnalyzerBase.TokenStreamComponents built from a StandardTokenizer filtered with StandardFilter, LowerCaseFilter, StopFilter , KeywordMarkerFilter if a stem exclusion set is provided, GermanNormalizationFilter and GermanLightStemFilter