C# Class Lucene.Net.Analysis.Reverse.ReverseStringFilter

Reverse token string, for example "country" => "yrtnuoc".

If marker is supplied, then tokens will be also prepended by that character. For example, with a marker of \u0001, "country" => "\u0001yrtnuoc". This is useful when implementing efficient leading wildcards search.

You must specify the required Version compatibility when creating ReverseStringFilter, or when using any of its static methods:

As of 3.1, supplementary characters are handled correctly

Inheritance: TokenFilter

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Public Methods

Method	Description
IncrementToken ( ) : bool
Reverse ( LuceneVersion matchVersion, string input ) : string	Reverses the given input string
Reverse ( LuceneVersion matchVersion, char buffer ) : void	Reverses the given input buffer in-place
Reverse ( LuceneVersion matchVersion, char buffer, int len ) : void	Partially reverses the given input buffer in-place from offset 0 up to the given length.
Reverse ( LuceneVersion matchVersion, char buffer, int start, int len ) : void	Partially reverses the given input buffer in-place from the given offset up to the given length.
ReverseStringFilter ( LuceneVersion matchVersion, TokenStream @in ) : Lucene.Net.Analysis.Tokenattributes	Create a new ReverseStringFilter that reverses all tokens in the supplied TokenStream. The reversed tokens will not be marked.
ReverseStringFilter ( LuceneVersion matchVersion, TokenStream @in, char marker ) : Lucene.Net.Analysis.Tokenattributes	Create a new ReverseStringFilter that reverses and marks all tokens in the supplied TokenStream. The reversed tokens will be prepended (marked) by the `marker` character.

Private Methods

Method	Description
ReverseUnicode3 ( char buffer, int start, int len ) : void

Method Details

IncrementToken() public method

public IncrementToken ( ) : bool
return	bool

Reverse() public static method

Reverses the given input string

public static Reverse ( LuceneVersion matchVersion, string input ) : string
matchVersion	LuceneVersion	See above
input	string	the string to reverse
return	string

Reverse() public static method

Reverses the given input buffer in-place

public static Reverse ( LuceneVersion matchVersion, char buffer ) : void
matchVersion	LuceneVersion	See above
buffer	char	the input char array to reverse
return	void

Reverse() public static method

Partially reverses the given input buffer in-place from offset 0 up to the given length.

public static Reverse ( LuceneVersion matchVersion, char buffer, int len ) : void
matchVersion	LuceneVersion	See above
buffer	char	the input char array to reverse
len	int	the length in the buffer up to where the /// buffer should be reversed
return	void

Reverse() public static method

Partially reverses the given input buffer in-place from the given offset up to the given length.

public static Reverse ( LuceneVersion matchVersion, char buffer, int start, int len ) : void
matchVersion	LuceneVersion	See above
buffer	char	the input char array to reverse
start	int	the offset from where to reverse the buffer
len	int	the length in the buffer up to where the /// buffer should be reversed
return	void

ReverseStringFilter() public method

Create a new ReverseStringFilter that reverses all tokens in the supplied TokenStream.

The reversed tokens will not be marked.

public ReverseStringFilter ( LuceneVersion matchVersion, TokenStream @in ) : Lucene.Net.Analysis.Tokenattributes
matchVersion	LuceneVersion	See above
@in	TokenStream
return	Lucene.Net.Analysis.Tokenattributes

ReverseStringFilter() public method

Create a new ReverseStringFilter that reverses and marks all tokens in the supplied TokenStream.

The reversed tokens will be prepended (marked) by the marker character.

public ReverseStringFilter ( LuceneVersion matchVersion, TokenStream @in, char marker ) : Lucene.Net.Analysis.Tokenattributes
matchVersion	LuceneVersion	See above
@in	TokenStream
marker	char	A character used to mark reversed tokens
return	Lucene.Net.Analysis.Tokenattributes