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DisjunctionMaxScorer.h
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1 // Copyright (c) 2009-2011 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 DISJUNCTIONMAXSCORER_H
8 #define DISJUNCTIONMAXSCORER_H
9 
10 #include "Scorer.h"
11 
12 namespace Lucene
13 {
19  {
20  public:
22  virtual ~DisjunctionMaxScorer();
23 
25 
26  protected:
29  int32_t numScorers;
30 
33 
34  int32_t doc;
35 
36  public:
37  virtual int32_t nextDoc();
38  virtual int32_t docID();
39 
42  virtual double score();
43 
44  virtual int32_t advance(int32_t target);
45 
46  protected:
48  void scoreAll(int32_t root, int32_t size, int32_t doc, Collection<double> sum, Collection<double> max);
49 
51  void heapify();
52 
55  void heapAdjust(int32_t root);
56 
58  void heapRemoveRoot();
59  };
60 }
61 
62 #endif

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