Lucene.Net  3.0.3
Lucene.Net is a port of the Lucene search engine library, written in C# and targeted at .NET runtime users.
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Lucene.Net.Analysis.Snowball.SnowballAnalyzer Class Reference

Filters StandardTokenizer with StandardFilter, LowerCaseFilter, StopFilter and SnowballFilter. More...

Inherits Lucene.Net.Analysis.Analyzer.

Public Member Functions

 SnowballAnalyzer (Version matchVersion, System.String name)
 Builds the named analyzer with no stop words.
 
 SnowballAnalyzer (Version matchVersion, System.String name, System.String[] stopWords)
 Builds the named analyzer with the given stop words.
 
 SnowballAnalyzer (Version matchVersion, string name, ISet< string > stopWords)
 Builds the named analyzer with the given stop words.
 
override TokenStream TokenStream (System.String fieldName, System.IO.TextReader reader)
 Constructs a StandardTokenizer filtered by a StandardFilter, a LowerCaseFilter and a StopFilter.
 
override TokenStream ReusableTokenStream (String fieldName, TextReader reader)
 
- Public Member Functions inherited from Lucene.Net.Analysis.Analyzer
abstract TokenStream TokenStream (String fieldName, System.IO.TextReader reader)
 Creates a TokenStream which tokenizes all the text in the provided Reader. Must be able to handle null field name for backward compatibility.
 
virtual TokenStream ReusableTokenStream (String fieldName, System.IO.TextReader reader)
 Creates a TokenStream that is allowed to be re-used from the previous time that the same thread called this method. Callers that do not need to use more than one TokenStream at the same time from this analyzer should use this method for better performance.
 
virtual int GetPositionIncrementGap (String fieldName)
 Invoked before indexing a Fieldable instance if terms have already been added to that field. This allows custom analyzers to place an automatic position increment gap between Fieldable instances using the same field name. The default value position increment gap is 0. With a 0 position increment gap and the typical default token position increment of 1, all terms in a field, including across Fieldable instances, are in successive positions, allowing exact PhraseQuery matches, for instance, across Fieldable instance boundaries.
 
virtual int GetOffsetGap (IFieldable field)
 Just like GetPositionIncrementGap, except for Token offsets instead. By default this returns 1 for tokenized fields and, as if the fields were joined with an extra space character, and 0 for un-tokenized fields. This method is only called if the field produced at least one token for indexing.
 
void Close ()
 Frees persistent resources used by this Analyzer
 
virtual void Dispose ()
 

Additional Inherited Members

- Protected Member Functions inherited from Lucene.Net.Analysis.Analyzer
virtual void Dispose (bool disposing)
 

Detailed Description

Filters StandardTokenizer with StandardFilter, LowerCaseFilter, StopFilter and SnowballFilter.

Available stemmers are listed in SF.Snowball.Ext. The name of a stemmer is the part of the class name before "Stemmer", e.g., the stemmer in EnglishStemmer is named "English".

NOTE: This class uses the same Version dependent settings as StandardAnalyzer

Definition at line 39 of file SnowballAnalyzer.cs.

Constructor & Destructor Documentation

Lucene.Net.Analysis.Snowball.SnowballAnalyzer.SnowballAnalyzer ( Version  matchVersion,
System.String  name 
)

Builds the named analyzer with no stop words.

Definition at line 46 of file SnowballAnalyzer.cs.

Lucene.Net.Analysis.Snowball.SnowballAnalyzer.SnowballAnalyzer ( Version  matchVersion,
System.String  name,
System.String[]  stopWords 
)

Builds the named analyzer with the given stop words.

Definition at line 55 of file SnowballAnalyzer.cs.

Lucene.Net.Analysis.Snowball.SnowballAnalyzer.SnowballAnalyzer ( Version  matchVersion,
string  name,
ISet< string >  stopWords 
)

Builds the named analyzer with the given stop words.

Definition at line 64 of file SnowballAnalyzer.cs.

Member Function Documentation

override TokenStream Lucene.Net.Analysis.Snowball.SnowballAnalyzer.ReusableTokenStream ( String  fieldName,
TextReader  reader 
)

Definition at line 95 of file SnowballAnalyzer.cs.

override TokenStream Lucene.Net.Analysis.Snowball.SnowballAnalyzer.TokenStream ( System.String  fieldName,
System.IO.TextReader  reader 
)

Constructs a StandardTokenizer filtered by a StandardFilter, a LowerCaseFilter and a StopFilter.

Definition at line 73 of file SnowballAnalyzer.cs.


The documentation for this class was generated from the following file: