org.opencms.search.galleries
Class CmsGallerySearchAnalyzer

java.lang.Object
  org.apache.lucene.analysis.Analyzer
      org.apache.lucene.analysis.ReusableAnalyzerBase
          org.apache.lucene.analysis.StopwordAnalyzerBase
              org.opencms.search.galleries.CmsGallerySearchAnalyzer

All Implemented Interfaces:

java.io.Closeable

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

Special analyzer for multiple languages, used in the OpenCms gallery search index.

The gallery search is done in one single index that may contain multiple languages.

According to the Lucene JavaDocs (3.0 version), the Lucene StandardAnalyzer is already using "a good tokenizer for most European-language documents". The only caveat is that a list of English only stop words is used.

This extended analyzer used a compound list of stop words compiled from the following languages:

• English
• German
• Spanish
• Italian
• French
• Portugese
• Danish
• Dutch
• Catalan
• Czech

Since:

8.0.0

Nested Class Summary

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

org.apache.lucene.analysis.ReusableAnalyzerBase.TokenStreamComponents

Field Summary

static int

DEFAULT_MAX_TOKEN_LENGTH Default maximum allowed token length.

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

matchVersion, stopwords

Constructor Summary

CmsGallerySearchAnalyzer(org.apache.lucene.util.Version version)
Constructor with version parameter.

Method Summary

protected org.apache.lucene.analysis.ReusableAnalyzerBase.TokenStreamComponents

createComponents(java.lang.String fieldName, java.io.Reader reader)

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

Field Detail

DEFAULT_MAX_TOKEN_LENGTH

public static final int DEFAULT_MAX_TOKEN_LENGTH

Default maximum allowed token length.

See Also:

Constant Field Values

Constructor Detail

CmsGallerySearchAnalyzer

public CmsGallerySearchAnalyzer(org.apache.lucene.util.Version version)
                         throws java.io.IOException

Constructor with version parameter.

Parameters:

version - the Lucene standard analyzer version to match

Throws:

java.io.IOException

Method Detail

createComponents

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

Specified by:

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

See Also:

This is take from the Lucene StandardAnalyzer, which is final since 3.1