org.dspace.search
Class DSAnalyzer

java.lang.Object
  org.apache.lucene.analysis.Analyzer
      org.apache.lucene.analysis.ReusableAnalyzerBase
          org.apache.lucene.analysis.StopwordAnalyzerBase
              org.dspace.search.DSAnalyzer

All Implemented Interfaces:

Closeable

Direct Known Subclasses:

DSNonStemmingAnalyzer

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

Custom Lucene Analyzer that combines the standard filter, lowercase filter, stemming and stopword filters.

Nested Class Summary

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

org.apache.lucene.analysis.ReusableAnalyzerBase.TokenStreamComponents

Field Summary

protected org.apache.lucene.util.Version	matchVersion
protected static String[]	STOP_WORDS
protected Set	stopSet

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

stopwords

Constructor Summary

DSAnalyzer(org.apache.lucene.util.Version matchVersion)
Builds an analyzer

Method Summary

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

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

getStopwordSet, loadStopwordSet

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

initReader, reusableTokenStream, tokenStream

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

close, getOffsetGap, getPreviousTokenStream, setPreviousTokenStream

Methods inherited from class java.lang.Object

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

Field Detail

matchVersion

protected final org.apache.lucene.util.Version matchVersion

STOP_WORDS

protected static final String[] STOP_WORDS

stopSet

protected final Set stopSet

Constructor Detail

DSAnalyzer

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

Builds an analyzer

Parameters:

matchVersion - Lucene version to match

Method Detail

createComponents

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

Specified by:

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

getPositionIncrementGap

public int getPositionIncrementGap(String fieldName)

Overrides:

getPositionIncrementGap in class org.apache.lucene.analysis.Analyzer