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DisjunctionSumScorer.h
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1 // Copyright (c) 2009-2014 Alan Wright. All rights reserved.
3 // Distributable under the terms of either the Apache License (Version 2.0)
4 // or the GNU Lesser General Public License.
6 
7 #ifndef DISJUNCTIONSUMSCORER_H
8 #define DISJUNCTIONSUMSCORER_H
9 
10 #include "Scorer.h"
11 
12 namespace Lucene {
13 
16 class DisjunctionSumScorer : public Scorer {
17 public:
19  virtual ~DisjunctionSumScorer();
20 
22 
23 protected:
25  int32_t nrScorers;
26 
29 
32 
41 
43  int32_t currentDoc;
44 
46  int32_t _nrMatchers;
47 
48  double currentScore;
49 
50 public:
51  virtual void initialize();
52 
53  virtual void score(const CollectorPtr& collector);
54  virtual int32_t nextDoc();
55 
58  virtual double score();
59 
60  virtual int32_t docID();
61 
64  int32_t nrMatchers();
65 
71  virtual int32_t advance(int32_t target);
72 
73 protected:
75  void initScorerDocQueue();
76 
82  virtual bool score(const CollectorPtr& collector, int32_t max, int32_t firstDocID);
83 
90  bool advanceAfterCurrent();
91 };
92 
93 }
94 
95 #endif
Scorer.h
LUCENE_CLASS
#define LUCENE_CLASS(Name)
Definition: LuceneObject.h:24
Lucene::Collection< ScorerPtr >
Lucene::DisjunctionSumScorer::minimumNrMatchers
int32_t minimumNrMatchers
The minimum number of scorers that should match.
Definition: DisjunctionSumScorer.h:31
Lucene::DisjunctionSumScorer::_nrMatchers
int32_t _nrMatchers
The number of subscorers that provide the current match.
Definition: DisjunctionSumScorer.h:46
Lucene::DisjunctionSumScorer::nrScorers
int32_t nrScorers
The number of subscorers.
Definition: DisjunctionSumScorer.h:21
Lucene::DisjunctionSumScorer::currentScore
double currentScore
Definition: DisjunctionSumScorer.h:48
Lucene::DisjunctionSumScorer::advanceAfterCurrent
bool advanceAfterCurrent()
Advance all subscorers after the current document determined by the top of the scorerDocQueue....
Lucene::DisjunctionSumScorer::advance
virtual int32_t advance(int32_t target)
Advances to the first match beyond the current whose document number is greater than or equal to a gi...
Lucene::ScorerDocQueuePtr
boost::shared_ptr< ScorerDocQueue > ScorerDocQueuePtr
Definition: LuceneTypes.h:549
Lucene::DisjunctionSumScorer::initScorerDocQueue
void initScorerDocQueue()
Called the first time next() or skipTo() is called to initialize scorerDocQueue.
Lucene
Definition: AbstractAllTermDocs.h:12
Lucene::DisjunctionSumScorer::scorerDocQueue
ScorerDocQueuePtr scorerDocQueue
The scorerDocQueue contains all subscorers ordered by their current doc(), with the minimum at the to...
Definition: DisjunctionSumScorer.h:40
Lucene::DisjunctionSumScorer::docID
virtual int32_t docID()
Returns the following:
Lucene::DisjunctionSumScorer::subScorers
Collection< ScorerPtr > subScorers
The subscorers.
Definition: DisjunctionSumScorer.h:28
Lucene::DisjunctionSumScorer::DisjunctionSumScorer
DisjunctionSumScorer(Collection< ScorerPtr > subScorers, int32_t minimumNrMatchers=1)
Lucene::Scorer
Common scoring functionality for different types of queries.
Definition: Scorer.h:22
Lucene::DisjunctionSumScorer::initialize
virtual void initialize()
Called directly after instantiation to create objects that depend on this object being fully construc...
Lucene::DisjunctionSumScorer::nrMatchers
int32_t nrMatchers()
Returns the number of subscorers matching the current document. Initially invalid,...
Lucene::CollectorPtr
boost::shared_ptr< Collector > CollectorPtr
Definition: LuceneTypes.h:295
Lucene::DisjunctionSumScorer::score
virtual double score()
Returns the score of the current document matching the query. Initially invalid, until next() is call...
Lucene::DisjunctionSumScorer
A Scorer for OR like queries, counterpart of ConjunctionScorer. This Scorer implements {} and uses sk...
Definition: DisjunctionSumScorer.h:16
Lucene::DisjunctionSumScorer::nextDoc
virtual int32_t nextDoc()
Advances to the next document in the set and returns the doc it is currently on, or NO_MORE_DOCS if t...
Lucene::DisjunctionSumScorer::currentDoc
int32_t currentDoc
The document number of the current match.
Definition: DisjunctionSumScorer.h:43
Lucene::DisjunctionSumScorer::~DisjunctionSumScorer
virtual ~DisjunctionSumScorer()

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