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java.lang.Object org.apache.lucene.analysis.Analyzer org.apache.lucene.analysis.util.StopwordAnalyzerBase org.apache.lucene.analysis.cz.CzechAnalyzer
public final class CzechAnalyzer
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
Nested Class Summary |
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Nested classes/interfaces inherited from class org.apache.lucene.analysis.Analyzer |
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Analyzer.GlobalReuseStrategy, Analyzer.PerFieldReuseStrategy, Analyzer.ReuseStrategy, Analyzer.TokenStreamComponents |
Field Summary | |
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static String |
DEFAULT_STOPWORD_FILE
File containing default Czech stopwords. |
Fields inherited from class org.apache.lucene.analysis.util.StopwordAnalyzerBase |
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matchVersion, stopwords |
Fields inherited from class org.apache.lucene.analysis.Analyzer |
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GLOBAL_REUSE_STRATEGY, PER_FIELD_REUSE_STRATEGY |
Constructor Summary | |
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CzechAnalyzer(Version matchVersion)
Builds an analyzer with the default stop words ( getDefaultStopSet() ). |
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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 . |
Method Summary | |
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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 |
Methods inherited from class org.apache.lucene.analysis.util.StopwordAnalyzerBase |
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getStopwordSet, loadStopwordSet, loadStopwordSet, loadStopwordSet |
Methods inherited from class org.apache.lucene.analysis.Analyzer |
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close, getOffsetGap, getPositionIncrementGap, getReuseStrategy, initReader, tokenStream, tokenStream |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
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public static final String DEFAULT_STOPWORD_FILE
Constructor Detail |
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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 setMethod Detail |
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public 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
Analyzer.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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