C# Class Lucene.Net.Search.FuzzyTermsEnum

Subclass of TermsEnum for enumerating all terms that are similar to the specified filter term.

Term enumerations are always ordered by #getComparator. Each term in the enumeration is greater than all that precede it.

Inheritance: TermsEnum

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Protected Properties

Property	Type	Description
MaxEdits	int
MinSimilarity_Renamed	float
Raw	bool
RealPrefixLength	int
Scale_factor	float
TermLength	int
TermText	int[]
Terms	Terms

Public Methods

Method	Description
DocFreq ( ) : int
Docs ( Bits liveDocs, DocsEnum reuse, int flags ) : DocsEnum
DocsAndPositions ( Bits liveDocs, DocsAndPositionsEnum reuse, int flags ) : DocsAndPositionsEnum
FuzzyTermsEnum ( Terms terms, Lucene.Net.Util.AttributeSource atts, Term term, float minSimilarity, int prefixLength, bool transpositions ) : System	Constructor for enumeration of all terms from specified `reader` which share a prefix of length `prefixLength` with `term` and which have a fuzzy similarity > `minSimilarity`. After calling the constructor the enumeration is already pointing to the first valid term if such a term exists.
Next ( ) : BytesRef
Ord ( ) : long
SeekCeil ( BytesRef text ) : SeekStatus
SeekExact ( BytesRef text ) : bool
SeekExact ( BytesRef term, TermState state ) : void
SeekExact ( long ord ) : void
Term ( ) : BytesRef
TermState ( ) : TermState
TotalTermFreq ( ) : long

Protected Methods

Method	Description
GetAutomatonEnum ( int editDistance, BytesRef lastTerm ) : TermsEnum	return an automata-based enum for matching up to editDistance from lastTerm, if possible
MaxEditDistanceChanged ( BytesRef lastTerm, int maxEdits, bool init ) : void

Private Methods

Method	Description
BottomChanged ( BytesRef lastTerm, bool init ) : void	fired when the max non-competitive boost has changed. this is the hook to swap in a smarter actualEnum
CalculateMaxBoost ( int nEdits ) : float
InitAutomata ( int maxDistance ) : IList	initialize levenshtein DFAs up to maxDistance, if possible
InitialMaxDistance ( float minimumSimilarity, int termLen ) : int
InitializeInstanceFields ( ) : void

Method Details

DocFreq() public method

public DocFreq ( ) : int
return	int

Docs() public method

public Docs ( Bits liveDocs, DocsEnum reuse, int flags ) : DocsEnum
liveDocs	Bits
reuse	DocsEnum
flags	int
return	DocsEnum

DocsAndPositions() public method

public DocsAndPositions ( Bits liveDocs, DocsAndPositionsEnum reuse, int flags ) : DocsAndPositionsEnum
liveDocs	Bits
reuse	DocsAndPositionsEnum
flags	int
return	DocsAndPositionsEnum

FuzzyTermsEnum() public method

Constructor for enumeration of all terms from specified reader which share a prefix of length prefixLength with term and which have a fuzzy similarity > minSimilarity.

After calling the constructor the enumeration is already pointing to the first valid term if such a term exists.

if there is a low-level IO error

public FuzzyTermsEnum ( Terms terms, Lucene.Net.Util.AttributeSource atts, Term term, float minSimilarity, int prefixLength, bool transpositions ) : System
terms	Terms	Delivers terms.
atts	Lucene.Net.Util.AttributeSource	created by the rewrite method of /// thats contains information about competitive boosts during rewrite. It is also used /// to cache DFAs between segment transitions.
term	Term	Pattern term.
minSimilarity	float	Minimum required similarity for terms from the reader. Pass an integer value /// representing edit distance. Passing a fraction is deprecated.
prefixLength	int	Length of required common prefix. Default value is 0.
transpositions	bool
return	System

GetAutomatonEnum() protected method

return an automata-based enum for matching up to editDistance from lastTerm, if possible

protected GetAutomatonEnum ( int editDistance, BytesRef lastTerm ) : TermsEnum
editDistance	int
lastTerm	BytesRef
return	TermsEnum

MaxEditDistanceChanged() protected method

protected MaxEditDistanceChanged ( BytesRef lastTerm, int maxEdits, bool init ) : void
lastTerm	BytesRef
maxEdits	int
init	bool
return	void

Next() public method

public Next ( ) : BytesRef
return	BytesRef

Ord() public method

public Ord ( ) : long
return	long

SeekCeil() public method

public SeekCeil ( BytesRef text ) : SeekStatus
text	BytesRef
return	SeekStatus

SeekExact() public method

public SeekExact ( BytesRef text ) : bool
text	BytesRef
return	bool

SeekExact() public method

public SeekExact ( BytesRef term, TermState state ) : void
term	BytesRef
state	TermState
return	void

SeekExact() public method

public SeekExact ( long ord ) : void
ord	long
return	void

Term() public method

public Term ( ) : BytesRef
return	BytesRef

TermState() public method

public TermState ( ) : TermState
return	TermState

TotalTermFreq() public method

public TotalTermFreq ( ) : long
return	long

Property Details

MaxEdits protected_oe property

protected int MaxEdits
return	int

MinSimilarity_Renamed protected_oe property

protected float MinSimilarity_Renamed
return	float

Raw protected_oe property

protected bool Raw
return	bool

RealPrefixLength protected_oe property

protected int RealPrefixLength
return	int

Scale_factor protected_oe property

protected float Scale_factor
return	float

TermLength protected_oe property

protected int TermLength
return	int

TermText protected_oe property

protected int[] TermText
return	int[]

Terms protected_oe property

protected Terms Terms
return	Terms