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java.lang.Object org.apache.lucene.analysis.Analyzer org.apache.lucene.analysis.fa.PersianAnalyzer
public final class PersianAnalyzer
Analyzer
for Persian.
This Analyzer uses ArabicLetterTokenizer
which implies tokenizing around
zero-width non-joiner in addition to whitespace. Some persian-specific variant forms (such as farsi
yeh and keheh) are standardized. "Stemming" is accomplished via stopwords.
Field Summary | |
---|---|
static String |
DEFAULT_STOPWORD_FILE
File containing default Persian stopwords. |
static String |
STOPWORDS_COMMENT
The comment character in the stopwords file. |
Fields inherited from class org.apache.lucene.analysis.Analyzer |
---|
overridesTokenStreamMethod |
Constructor Summary | |
---|---|
PersianAnalyzer()
Deprecated. Use PersianAnalyzer(Version) instead |
|
PersianAnalyzer(File stopwords)
Deprecated. Use PersianAnalyzer(Version, File) instead |
|
PersianAnalyzer(Hashtable stopwords)
Deprecated. Use PersianAnalyzer(Version, Hashtable) instead |
|
PersianAnalyzer(String[] stopwords)
Deprecated. Use PersianAnalyzer(Version, String[]) instead |
|
PersianAnalyzer(Version matchVersion)
Builds an analyzer with the default stop words: DEFAULT_STOPWORD_FILE . |
|
PersianAnalyzer(Version matchVersion,
File stopwords)
Builds an analyzer with the given stop words. |
|
PersianAnalyzer(Version matchVersion,
Hashtable stopwords)
Builds an analyzer with the given stop words. |
|
PersianAnalyzer(Version matchVersion,
String[] stopwords)
Builds an analyzer with the given stop words. |
Method Summary | |
---|---|
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 |
---|
public static final String DEFAULT_STOPWORD_FILE
public static final String STOPWORDS_COMMENT
Constructor Detail |
---|
public PersianAnalyzer()
PersianAnalyzer(Version)
instead
DEFAULT_STOPWORD_FILE
.
public PersianAnalyzer(Version matchVersion)
DEFAULT_STOPWORD_FILE
.
public PersianAnalyzer(String[] stopwords)
PersianAnalyzer(Version, String[])
instead
public PersianAnalyzer(Version matchVersion, String[] stopwords)
public PersianAnalyzer(Hashtable stopwords)
PersianAnalyzer(Version, Hashtable)
instead
public PersianAnalyzer(Version matchVersion, Hashtable stopwords)
public PersianAnalyzer(File stopwords) throws IOException
PersianAnalyzer(Version, File)
instead
STOPWORDS_COMMENT
IOException
public PersianAnalyzer(Version matchVersion, File stopwords) throws IOException
STOPWORDS_COMMENT
IOException
Method Detail |
---|
public TokenStream tokenStream(String fieldName, Reader reader)
TokenStream
which tokenizes all the text in the provided
Reader
.
tokenStream
in class Analyzer
TokenStream
built from a ArabicLetterTokenizer
filtered with LowerCaseFilter
,
ArabicNormalizationFilter
,
PersianNormalizationFilter
and Persian Stop wordspublic TokenStream reusableTokenStream(String fieldName, Reader reader) throws IOException
TokenStream
which tokenizes all the text
in the provided Reader
.
reusableTokenStream
in class Analyzer
TokenStream
built from a ArabicLetterTokenizer
filtered with LowerCaseFilter
,
ArabicNormalizationFilter
,
PersianNormalizationFilter
and Persian Stop words
IOException
|
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