org.apache.lucene.analysis.el

Class GreekAnalyzer

java.lang.Object

org.apache.lucene.analysis.Analyzer

org.apache.lucene.analysis.ReusableAnalyzerBase

org.apache.lucene.analysis.StopwordAnalyzerBase

org.apache.lucene.analysis.el.GreekAnalyzer

All Implemented Interfaces:

Closeable

public final class GreekAnalyzer
extends StopwordAnalyzerBase

Analyzer for the Greek language.

Supports an external list of stopwords (words that will not be indexed at all). A default set of stopwords is used unless an alternative list is specified.

You must specify the required Version compatibility when creating GreekAnalyzer:

• As of 3.1, StandardFilter and GreekStemmer are used by default.
• As of 2.9, StopFilter preserves position increments

NOTE: This class uses the same Version dependent settings as StandardAnalyzer.

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 Greek stopwords.

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

matchVersion, stopwords

Constructor Summary

Constructors

Constructor and Description
GreekAnalyzer(Version matchVersion) Builds an analyzer with the default stop words.
GreekAnalyzer(Version matchVersion, Map<?,?> stopwords) Deprecated. use GreekAnalyzer(Version, Set) instead
GreekAnalyzer(Version matchVersion, Set<?> stopwords) Builds an analyzer with the given stop words.
GreekAnalyzer(Version matchVersion, String... stopwords) Deprecated. use GreekAnalyzer(Version, Set) instead

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 a set of default Greek-stopwords

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 Greek stopwords.

See Also:

Constant Field Values

Constructor Detail

GreekAnalyzer

public GreekAnalyzer(Version matchVersion)

Builds an analyzer with the default stop words.

Parameters:

matchVersion - Lucene compatibility version, See above

GreekAnalyzer

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

Builds an analyzer with the given stop words.

NOTE: The stopwords set should be pre-processed with the logic of GreekLowerCaseFilter for best results.

Parameters:

matchVersion - Lucene compatibility version, See above

stopwords - a stopword set

GreekAnalyzer

@Deprecated
public GreekAnalyzer(Version matchVersion,
                        String... stopwords)

Deprecated. use GreekAnalyzer(Version, Set) instead

Builds an analyzer with the given stop words.

Parameters:

stopwords - Array of stopwords to use.

GreekAnalyzer

@Deprecated
public GreekAnalyzer(Version matchVersion,
                        Map<?,?> stopwords)

Deprecated. use GreekAnalyzer(Version, Set) instead

Builds an analyzer with the given stop words.

Method Detail

getDefaultStopSet

public static final Set<?> getDefaultStopSet()

Returns a set of default Greek-stopwords

Returns:

a set of default Greek-stopwords

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 GreekLowerCaseFilter, StandardFilter, StopFilter, and GreekStemFilter