public final class PersianAnalyzer extends Analyzer
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.
Modifier and Type | Field and Description |
---|---|
static String |
DEFAULT_STOPWORD_FILE
File containing default Persian stopwords.
|
static String |
STOPWORDS_COMMENT
The comment character in the stopwords file.
|
overridesTokenStreamMethod
Constructor and Description |
---|
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.
|
Modifier and Type | Method and Description |
---|---|
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 . |
close, getOffsetGap, getPositionIncrementGap, getPreviousTokenStream, setOverridesTokenStreamMethod, setPreviousTokenStream
public static final String DEFAULT_STOPWORD_FILE
public static final String STOPWORDS_COMMENT
public PersianAnalyzer()
PersianAnalyzer(Version)
insteadDEFAULT_STOPWORD_FILE
.public PersianAnalyzer(Version matchVersion)
DEFAULT_STOPWORD_FILE
.public PersianAnalyzer(String[] stopwords)
PersianAnalyzer(Version, String[])
insteadpublic PersianAnalyzer(Version matchVersion, String[] stopwords)
public PersianAnalyzer(Hashtable stopwords)
PersianAnalyzer(Version, Hashtable)
insteadpublic PersianAnalyzer(Version matchVersion, Hashtable stopwords)
public PersianAnalyzer(File stopwords) throws IOException
PersianAnalyzer(Version, File)
insteadSTOPWORDS_COMMENT
IOException
public PersianAnalyzer(Version matchVersion, File stopwords) throws IOException
STOPWORDS_COMMENT
IOException
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 wordsIOException
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