org.apache.lucene.analysis.cz
Class CzechAnalyzer

java.lang.Object
  org.apache.lucene.analysis.Analyzer
      org.apache.lucene.analysis.cz.CzechAnalyzer

All Implemented Interfaces:

Closeable

public final class CzechAnalyzer
extends Analyzer

Analyzer for Czech 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.

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

Field Summary

static String[]

CZECH_STOP_WORDS Deprecated. use getDefaultStopSet() instead

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

overridesTokenStreamMethod

Constructor Summary

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

CzechAnalyzer(Version matchVersion, File stopwords)
Deprecated. use CzechAnalyzer(Version, Set) instead

CzechAnalyzer(Version matchVersion, HashSet<?> stopwords)
Deprecated. use CzechAnalyzer(Version, Set) instead

CzechAnalyzer(Version matchVersion, Set<?> stopwords)
Builds an analyzer with the given stop words and stemming exclusion words

CzechAnalyzer(Version matchVersion, String... stopwords)
Deprecated. use CzechAnalyzer(Version, Set) instead

Method Summary

static Set<?>	getDefaultStopSet() Returns a set of default Czech-stopwords
void	loadStopWords(InputStream wordfile, String encoding) Deprecated. use WordlistLoader.getWordSet(Reader, String) and CzechAnalyzer(Version, Set) instead
TokenStream	reusableTokenStream(String fieldName, Reader reader) Returns a (possibly reused) TokenStream which tokenizes all the text in the provided Reader.
TokenStream	tokenStream(String fieldName, Reader reader) Creates a TokenStream which tokenizes all the text in the provided Reader.

Methods inherited from class org.apache.lucene.analysis.Analyzer

close, getOffsetGap, getPositionIncrementGap, getPreviousTokenStream, setOverridesTokenStreamMethod, setPreviousTokenStream

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

CZECH_STOP_WORDS

public static final String[] CZECH_STOP_WORDS

Deprecated. use getDefaultStopSet() instead

List of typical stopwords.

Constructor Detail

CzechAnalyzer

public CzechAnalyzer(Version matchVersion)

Builds an analyzer with the default stop words (CZECH_STOP_WORDS).

CzechAnalyzer

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

Builds an analyzer with the given stop words and stemming exclusion words

Parameters:

matchVersion - lucene compatibility version

stopwords - a stopword set

CzechAnalyzer

public CzechAnalyzer(Version matchVersion,
                     String... stopwords)

Deprecated. use CzechAnalyzer(Version, Set) instead

Builds an analyzer with the given stop words.

CzechAnalyzer

public CzechAnalyzer(Version matchVersion,
                     HashSet<?> stopwords)

Deprecated. use CzechAnalyzer(Version, Set) instead

Builds an analyzer with the given stop words.

CzechAnalyzer

public CzechAnalyzer(Version matchVersion,
                     File stopwords)
              throws IOException

Deprecated. use CzechAnalyzer(Version, Set) instead

Builds an analyzer with the given stop words.

Throws:

IOException

Method Detail

getDefaultStopSet

public static final Set<?> getDefaultStopSet()

Returns a set of default Czech-stopwords

Returns:

a set of default Czech-stopwords

loadStopWords

public void loadStopWords(InputStream wordfile,
                          String encoding)

Deprecated. use WordlistLoader.getWordSet(Reader, String) and CzechAnalyzer(Version, Set) instead

Loads stopwords hash from resource stream (file, database...).

Parameters:

wordfile - File containing the wordlist

encoding - Encoding used (win-1250, iso-8859-2, ...), null for default system encoding

tokenStream

public final TokenStream tokenStream(String fieldName,
                                     Reader reader)

Creates a TokenStream which tokenizes all the text in the provided Reader.

Specified by:

tokenStream in class Analyzer

Returns:

A TokenStream built from a StandardTokenizer filtered with StandardFilter, LowerCaseFilter, and StopFilter

reusableTokenStream

public TokenStream reusableTokenStream(String fieldName,
                                       Reader reader)
                                throws IOException

Returns a (possibly reused) TokenStream which tokenizes all the text in the provided Reader.

Overrides:

reusableTokenStream in class Analyzer

Returns:

A TokenStream built from a StandardTokenizer filtered with StandardFilter, LowerCaseFilter, and StopFilter

Throws:

IOException