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 java.lang.String |
DEFAULT_STOPWORD_FILE
File containing default Persian stopwords.
|
static java.lang.String |
STOPWORDS_COMMENT
The comment character in the stopwords file.
|
overridesTokenStreamMethod
Constructor and Description |
---|
PersianAnalyzer()
Deprecated.
Use
PersianAnalyzer(Version) instead |
PersianAnalyzer(java.io.File stopwords)
Deprecated.
Use
PersianAnalyzer(Version, File) instead |
PersianAnalyzer(java.util.Hashtable stopwords)
Deprecated.
Use
PersianAnalyzer(Version, Hashtable) instead |
PersianAnalyzer(java.lang.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,
java.io.File stopwords)
Builds an analyzer with the given stop words.
|
PersianAnalyzer(Version matchVersion,
java.util.Hashtable stopwords)
Builds an analyzer with the given stop words.
|
PersianAnalyzer(Version matchVersion,
java.lang.String[] stopwords)
Builds an analyzer with the given stop words.
|
Modifier and Type | Method and Description |
---|---|
TokenStream |
reusableTokenStream(java.lang.String fieldName,
java.io.Reader reader)
Returns a (possibly reused)
TokenStream which tokenizes all the text
in the provided Reader . |
TokenStream |
tokenStream(java.lang.String fieldName,
java.io.Reader reader)
Creates a
TokenStream which tokenizes all the text in the provided
Reader . |
close, getOffsetGap, getPositionIncrementGap, getPreviousTokenStream, setOverridesTokenStreamMethod, setPreviousTokenStream
public static final java.lang.String DEFAULT_STOPWORD_FILE
public static final java.lang.String STOPWORDS_COMMENT
public PersianAnalyzer()
PersianAnalyzer(Version)
insteadDEFAULT_STOPWORD_FILE
.public PersianAnalyzer(Version matchVersion)
DEFAULT_STOPWORD_FILE
.public PersianAnalyzer(java.lang.String[] stopwords)
PersianAnalyzer(Version, String[])
insteadpublic PersianAnalyzer(Version matchVersion, java.lang.String[] stopwords)
public PersianAnalyzer(java.util.Hashtable stopwords)
PersianAnalyzer(Version, Hashtable)
insteadpublic PersianAnalyzer(Version matchVersion, java.util.Hashtable stopwords)
public PersianAnalyzer(java.io.File stopwords) throws java.io.IOException
PersianAnalyzer(Version, File)
insteadSTOPWORDS_COMMENT
java.io.IOException
public PersianAnalyzer(Version matchVersion, java.io.File stopwords) throws java.io.IOException
STOPWORDS_COMMENT
java.io.IOException
public TokenStream tokenStream(java.lang.String fieldName, java.io.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(java.lang.String fieldName, java.io.Reader reader) throws java.io.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 wordsjava.io.IOException
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