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:

java.io.Closeable, java.lang.AutoCloseable

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

Fields

Modifier and Type	Field and Description
static java.lang.String	DEFAULT_STOPWORD_FILE File containing default Thai stopwords.

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

matchVersion, stopwords

Constructor Summary

Constructors

Constructor and Description
ThaiAnalyzer(Version matchVersion) Builds an analyzer with the default stop words.
ThaiAnalyzer(Version matchVersion, java.util.Set<?> stopwords) Builds an analyzer with the given stop words.

Method Summary

Modifier and Type	Method and Description
protected ReusableAnalyzerBase.TokenStreamComponents	createComponents(java.lang.String fieldName, java.io.Reader reader) Creates ReusableAnalyzerBase.TokenStreamComponents used to tokenize all the text in the provided Reader.
static java.util.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 java.lang.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,
                    java.util.Set<?> stopwords)

Builds an analyzer with the given stop words.

Parameters:

matchVersion - lucene compatibility version

stopwords - a stopword set

Method Detail

getDefaultStopSet

public static java.util.Set<?> getDefaultStopSet()

Returns an unmodifiable instance of the default stop words set.

Returns:

default stop words set.

createComponents

protected ReusableAnalyzerBase.TokenStreamComponents createComponents(java.lang.String fieldName,
                                                                      java.io.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