org.apache.lucene.analysis.th
Class ThaiAnalyzer

java.lang.Object
  org.apache.lucene.analysis.Analyzer
      org.apache.lucene.analysis.ReusableAnalyzerBase
          org.apache.lucene.analysis.StopwordAnalyzerBase
              org.apache.lucene.analysis.th.ThaiAnalyzer

All Implemented Interfaces:

Closeable

public final class ThaiAnalyzer
extends StopwordAnalyzerBase

Analyzer for Thai language. It uses BreakIterator to break words.

You must specify the required Version compatibility when creating ThaiAnalyzer:

• As of 3.6, a set of Thai stopwords is used by default

Nested Class Summary

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

ReusableAnalyzerBase.TokenStreamComponents

Field Summary

static String

DEFAULT_STOPWORD_FILE File containing default Thai stopwords.

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

matchVersion, stopwords

Constructor Summary

ThaiAnalyzer(Version matchVersion)
Builds an analyzer with the default stop words.

ThaiAnalyzer(Version matchVersion, Set<?> stopwords)
Builds an analyzer with the given stop words.

Method Summary

protected ReusableAnalyzerBase.TokenStreamComponents	createComponents(String fieldName, Reader reader) Creates ReusableAnalyzerBase.TokenStreamComponents used to tokenize all the text in the provided Reader.
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

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_STOPWORD_FILE

public static final String DEFAULT_STOPWORD_FILE

File containing default Thai stopwords.

See Also:

Constant Field Values

Constructor Detail

ThaiAnalyzer

public ThaiAnalyzer(Version matchVersion)

Builds an analyzer with the default stop words.

Parameters:

matchVersion - lucene compatibility version

ThaiAnalyzer

public ThaiAnalyzer(Version matchVersion,
                    Set<?> stopwords)

Builds an analyzer with the given stop words.

Parameters:

matchVersion - lucene compatibility version

stopwords - a stopword set

Method Detail

getDefaultStopSet

public static Set<?> getDefaultStopSet()

Returns an unmodifiable instance of the default stop words set.

Returns:

default stop words set.

createComponents

protected 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 ReusableAnalyzerBase

Parameters:

fieldName - the name of the fields content passed to the ReusableAnalyzerBase.TokenStreamComponents sink as a reader

reader - the reader passed to the Tokenizer constructor

Returns:

ReusableAnalyzerBase.TokenStreamComponents built from a StandardTokenizer filtered with StandardFilter, LowerCaseFilter, ThaiWordFilter, and StopFilter