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.Search.BooleanScorer Class Reference

Inherits Lucene.Net.Search.Scorer.

Classes

class  Bucket
 
class  BucketTable
 A simple hash table of document scores within a range.
 
class  SubScorer
 

Public Member Functions

 BooleanScorer (Similarity similarity, int minNrShouldMatch, System.Collections.Generic.List< Scorer > optionalScorers, System.Collections.Generic.List< Scorer > prohibitedScorers)
 
override bool Score (Collector collector, int max, int firstDocID)
 Expert: Collects matching documents in a range. Hook for optimization. Note, firstDocID is added to ensure that DocIdSetIterator.NextDoc() was called before this method.
 
override int Advance (int target)
 Advances to the first beyond the current whose document number is greater than or equal to target. Returns the current document number or NO_MORE_DOCS if there are no more docs in the set. Behaves as if written:
 
override int DocID ()
 Returns the following:


 
override int NextDoc ()
 Advances to the next document in the set and returns the doc it is currently on, or NO_MORE_DOCS if there are no more docs in the set.

 
override float Score ()
 Returns the score of the current document matching the query. Initially invalid, until DocIdSetIterator.NextDoc() or DocIdSetIterator.Advance(int) is called the first time, or when called from within Collector.Collect(int).
 
override void Score (Collector collector)
 Scores and collects all matching documents.
 
override System.String ToString ()
 

Additional Inherited Members

- Static Public Attributes inherited from Lucene.Net.Search.DocIdSetIterator
static readonly int NO_MORE_DOCS = System.Int32.MaxValue
 When returned by NextDoc(), Advance(int) and DocID() it means there are no more docs in the iterator.
 
- Properties inherited from Lucene.Net.Search.Scorer
virtual Similarity Similarity [get]
 Returns the Similarity implementation used by this scorer.
 

Detailed Description

Definition at line 58 of file BooleanScorer.cs.

Constructor & Destructor Documentation

Lucene.Net.Search.BooleanScorer.BooleanScorer ( Similarity  similarity,
int  minNrShouldMatch,
System.Collections.Generic.List< Scorer optionalScorers,
System.Collections.Generic.List< Scorer prohibitedScorers 
)

Definition at line 227 of file BooleanScorer.cs.

Member Function Documentation

override int Lucene.Net.Search.BooleanScorer.Advance ( int  target)
virtual

Advances to the first beyond the current whose document number is greater than or equal to target. Returns the current document number or NO_MORE_DOCS if there are no more docs in the set. Behaves as if written:

int advance(int target) { int doc; while ((doc = nextDoc()) < target) { } return doc; }

Some implementations are considerably more efficient than that.

NOTE: certain implemenations may return a different value (each time) if called several times in a row with the same target.

NOTE: this method may be called with NO_MORE_DOCS for efficiency by some Scorers. If your implementation cannot efficiently determine that it should exhaust, it is recommended that you check for that value in each call to this method.

NOTE: after the iterator has exhausted you should not call this method, as it may result in unpredicted behavior.

<since>2.9</since>

Implements Lucene.Net.Search.DocIdSetIterator.

Definition at line 333 of file BooleanScorer.cs.

override int Lucene.Net.Search.BooleanScorer.DocID ( )
virtual

Returns the following:

Implements Lucene.Net.Search.DocIdSetIterator.

Definition at line 338 of file BooleanScorer.cs.

override int Lucene.Net.Search.BooleanScorer.NextDoc ( )
virtual

Advances to the next document in the set and returns the doc it is currently on, or NO_MORE_DOCS if there are no more docs in the set.

NOTE: after the iterator has exhausted you should not call this method, as it may result in unpredicted behavior.

Implements Lucene.Net.Search.DocIdSetIterator.

Definition at line 343 of file BooleanScorer.cs.

override bool Lucene.Net.Search.BooleanScorer.Score ( Collector  collector,
int  max,
int  firstDocID 
)
virtual

Expert: Collects matching documents in a range. Hook for optimization. Note, firstDocID is added to ensure that DocIdSetIterator.NextDoc() was called before this method.

Parameters
collectorThe collector to which all matching documents are passed.
maxDo not score documents past this.
firstDocIDThe first document ID (ensures DocIdSetIterator.NextDoc() is called before this method.
Returns
true if more matching documents may remain.

Reimplemented from Lucene.Net.Search.Scorer.

Definition at line 269 of file BooleanScorer.cs.

override float Lucene.Net.Search.BooleanScorer.Score ( )
virtual

Returns the score of the current document matching the query. Initially invalid, until DocIdSetIterator.NextDoc() or DocIdSetIterator.Advance(int) is called the first time, or when called from within Collector.Collect(int).

Implements Lucene.Net.Search.Scorer.

Definition at line 382 of file BooleanScorer.cs.

override void Lucene.Net.Search.BooleanScorer.Score ( Collector  collector)
virtual

Scores and collects all matching documents.

Parameters
collectorThe collector to which all matching documents are passed.

Reimplemented from Lucene.Net.Search.Scorer.

Definition at line 387 of file BooleanScorer.cs.

override System.String Lucene.Net.Search.BooleanScorer.ToString ( )

Definition at line 392 of file BooleanScorer.cs.


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