org.apache.lucene.analysis.cz
Class CzechAnalyzer

java.lang.Object
  extended by org.apache.lucene.analysis.Analyzer
      extended by 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


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