org.apache.lucene.analysis.hi

Class HindiAnalyzer

java.lang.Object

org.apache.lucene.analysis.Analyzer

org.apache.lucene.analysis.ReusableAnalyzerBase

org.apache.lucene.analysis.StopwordAnalyzerBase

org.apache.lucene.analysis.hi.HindiAnalyzer

All Implemented Interfaces:

Closeable

public final class HindiAnalyzer
extends StopwordAnalyzerBase

Analyzer for Hindi.

You must specify the required Version compatibility when creating HindiAnalyzer:

• As of 3.6, StandardTokenizer is used for tokenization

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 String	DEFAULT_STOPWORD_FILE File containing default Hindi stopwords.

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

matchVersion, stopwords

Constructor Summary

Constructors

Constructor and Description
HindiAnalyzer(Version version) Builds an analyzer with the default stop words: DEFAULT_STOPWORD_FILE.
HindiAnalyzer(Version version, Set<?> stopwords) Builds an analyzer with the given stop words
HindiAnalyzer(Version version, Set<?> stopwords, Set<?> stemExclusionSet) Builds an analyzer with the given stop words

Method Summary

Methods

Modifier and Type	Method and Description
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 Hindi stopwords. Default stopword list is from http://members.unine.ch/jacques.savoy/clef/index.html The stopword list is BSD-Licensed.

See Also:

Constant Field Values

Constructor Detail

HindiAnalyzer

public HindiAnalyzer(Version version,
             Set<?> stopwords,
             Set<?> stemExclusionSet)

Builds an analyzer with the given stop words

Parameters:

version - lucene compatibility version

stopwords - a stopword set

stemExclusionSet - a stemming exclusion set

HindiAnalyzer

public HindiAnalyzer(Version version,
             Set<?> stopwords)

Builds an analyzer with the given stop words

Parameters:

version - lucene compatibility version

stopwords - a stopword set

HindiAnalyzer

public HindiAnalyzer(Version version)

Builds an analyzer with the default stop words: DEFAULT_STOPWORD_FILE.

Method Detail

getDefaultStopSet

public static Set<?> getDefaultStopSet()

Returns an unmodifiable instance of the default stop-words set.

Returns:

an unmodifiable instance of the 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 LowerCaseFilter, IndicNormalizationFilter, HindiNormalizationFilter, KeywordMarkerFilter if a stem exclusion set is provided, HindiStemFilter, and Hindi Stop words