public final class CzechAnalyzer extends StopwordAnalyzerBase
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.
Analyzer.ReuseStrategy, Analyzer.TokenStreamComponents
Modifier and Type | Field and Description |
---|---|
static String |
DEFAULT_STOPWORD_FILE
File containing default Czech stopwords.
|
stopwords
GLOBAL_REUSE_STRATEGY, PER_FIELD_REUSE_STRATEGY
Constructor and Description |
---|
CzechAnalyzer()
Builds an analyzer with the default stop words (
getDefaultStopSet() ). |
CzechAnalyzer(CharArraySet stopwords)
Builds an analyzer with the given stop words.
|
CzechAnalyzer(CharArraySet stopwords,
CharArraySet stemExclusionTable)
Builds an analyzer with the given stop words and a set of work to be
excluded from the
CzechStemFilter . |
Modifier and Type | Method and Description |
---|---|
protected Analyzer.TokenStreamComponents |
createComponents(String fieldName)
Creates
Analyzer.TokenStreamComponents
used to tokenize all the text in the provided Reader . |
static CharArraySet |
getDefaultStopSet()
Returns a set of default Czech-stopwords
|
protected TokenStream |
normalize(String fieldName,
TokenStream in) |
getStopwordSet, loadStopwordSet, loadStopwordSet, loadStopwordSet
attributeFactory, close, getOffsetGap, getPositionIncrementGap, getReuseStrategy, getVersion, initReader, initReaderForNormalization, normalize, setVersion, tokenStream, tokenStream
public static final String DEFAULT_STOPWORD_FILE
public CzechAnalyzer()
getDefaultStopSet()
).public CzechAnalyzer(CharArraySet stopwords)
stopwords
- a stopword setpublic CzechAnalyzer(CharArraySet stopwords, CharArraySet stemExclusionTable)
CzechStemFilter
.stopwords
- a stopword setstemExclusionTable
- a stemming exclusion setpublic static final CharArraySet getDefaultStopSet()
protected Analyzer.TokenStreamComponents createComponents(String fieldName)
Analyzer.TokenStreamComponents
used to tokenize all the text in the provided Reader
.createComponents
in class Analyzer
Analyzer.TokenStreamComponents
built from a StandardTokenizer
filtered with
LowerCaseFilter
, StopFilter
, and CzechStemFilter
(only if version is >= LUCENE_31). If
a stem exclusion set is provided via
CzechAnalyzer(CharArraySet, CharArraySet)
a
SetKeywordMarkerFilter
is added before
CzechStemFilter
.protected TokenStream normalize(String fieldName, TokenStream in)
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