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.
You must specify the required Version
compatibility when creating
CzechAnalyzer:
CzechStemFilter
Analyzer.GlobalReuseStrategy, Analyzer.PerFieldReuseStrategy, Analyzer.ReuseStrategy, Analyzer.TokenStreamComponents
Modifier and Type | Field and Description |
---|---|
static String |
DEFAULT_STOPWORD_FILE
File containing default Czech stopwords.
|
matchVersion, stopwords
GLOBAL_REUSE_STRATEGY, PER_FIELD_REUSE_STRATEGY
Constructor and Description |
---|
CzechAnalyzer(Version matchVersion)
Builds an analyzer with the default stop words (
getDefaultStopSet() ). |
CzechAnalyzer(Version matchVersion,
CharArraySet stopwords)
Builds an analyzer with the given stop words.
|
CzechAnalyzer(Version matchVersion,
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,
Reader reader)
Creates
Analyzer.TokenStreamComponents
used to tokenize all the text in the provided Reader . |
static CharArraySet |
getDefaultStopSet()
Returns a set of default Czech-stopwords
|
getStopwordSet, loadStopwordSet, loadStopwordSet, loadStopwordSet
close, getOffsetGap, getPositionIncrementGap, getReuseStrategy, initReader, tokenStream, tokenStream
public static final String DEFAULT_STOPWORD_FILE
public CzechAnalyzer(Version matchVersion)
getDefaultStopSet()
).matchVersion
- Lucene version to match See
abovepublic CzechAnalyzer(Version matchVersion, CharArraySet stopwords)
matchVersion
- Lucene version to match See
abovestopwords
- a stopword setpublic CzechAnalyzer(Version matchVersion, CharArraySet stopwords, CharArraySet stemExclusionTable)
CzechStemFilter
.matchVersion
- Lucene version to match See
abovestopwords
- a stopword setstemExclusionTable
- a stemming exclusion setpublic static final CharArraySet getDefaultStopSet()
protected Analyzer.TokenStreamComponents createComponents(String fieldName, Reader reader)
Analyzer.TokenStreamComponents
used to tokenize all the text in the provided Reader
.createComponents
in class Analyzer
fieldName
- the name of the fields content passed to the
Analyzer.TokenStreamComponents
sink as a readerreader
- the reader passed to the Tokenizer
constructorAnalyzer.TokenStreamComponents
built from a StandardTokenizer
filtered with
StandardFilter
, LowerCaseFilter
, StopFilter
, and CzechStemFilter
(only if version is >= LUCENE_31). If
a version is >= LUCENE_31 and a stem exclusion set is provided via
CzechAnalyzer(Version, CharArraySet, CharArraySet)
a
SetKeywordMarkerFilter
is added before
CzechStemFilter
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