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TopDocsCollector.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 TOPDOCSCOLLECTOR_H
8 #define TOPDOCSCOLLECTOR_H
9
10 #include "Collector.h"
11 #include "PriorityQueue.h"
12
13 namespace Lucene
14 {
21 class LPPAPI TopDocsCollector : public Collector
22 {
23 public:
24 TopDocsCollector(HitQueueBasePtr pq);
25 virtual ~TopDocsCollector();
26
27 LUCENE_CLASS(TopDocsCollector);
28
29 protected:
33 HitQueueBasePtr pq;
34
36 int32_t totalHits;
37
38 public:
40 virtual int32_t getTotalHits();
41
43 virtual TopDocsPtr topDocs();
44
54 virtual TopDocsPtr topDocs(int32_t start);
55
66 virtual TopDocsPtr topDocs(int32_t start, int32_t howMany);
67
68 protected:
70 static TopDocsPtr EMPTY_TOPDOCS();
71
74 virtual void populateResults(Collection<ScoreDocPtr> results, int32_t howMany);
75
79 virtual TopDocsPtr newTopDocs(Collection<ScoreDocPtr> results, int32_t start);
80 };
81 }
82
83 #endif

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