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NearSpansUnordered.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 NEARSPANSUNORDERED_H
8 #define NEARSPANSUNORDERED_H
9
10 #include "Spans.h"
11
12 namespace Lucene {
13
17 class LPPAPI NearSpansUnordered : public Spans {
18 public:
19 NearSpansUnordered(const SpanNearQueryPtr& query, const IndexReaderPtr& reader);
20 virtual ~NearSpansUnordered();
21
22 LUCENE_CLASS(NearSpansUnordered);
23
24 protected:
25 SpanNearQueryPtr query;
26 IndexReaderPtr reader;
27
28 Collection<SpansCellPtr> ordered; // spans in query order
29 Collection<SpansPtr> subSpans;
30 int32_t slop; // from query
31
32 SpansCellPtr first; // linked list of spans
33 SpansCellPtr last; // sorted by doc only
34
35 int32_t totalLength; // sum of current lengths
36
37 CellQueuePtr queue; // sorted queue of spans
38 SpansCellPtr max; // max element in queue
39
40 bool more; // true if not done
41 bool firstTime; // true before first next()
42
43 public:
44 virtual void initialize();
45
46 Collection<SpansPtr> getSubSpans();
47
48 virtual bool next();
49 virtual bool skipTo(int32_t target);
50 virtual int32_t doc();
51 virtual int32_t start();
52 virtual int32_t end();
53 virtual Collection<ByteArray> getPayload();
54 virtual bool isPayloadAvailable();
55 virtual String toString();
56
57 protected:
58 SpansCellPtr min();
59 void initList(bool next);
60 void addToList(const SpansCellPtr& cell);
61 void firstToLast();
62 void queueToList();
63 void listToQueue();
64 bool atMatch();
65
66 friend class SpansCell;
67 };
68
69 }
70
71 #endif
Lucene::NearSpansUnordered::ordered
Collection< SpansCellPtr > ordered
Definition: NearSpansUnordered.h:28
LUCENE_CLASS
#define LUCENE_CLASS(Name)
Definition: LuceneObject.h:24
Lucene::Collection< SpansCellPtr >
Lucene::Spans
An enumeration of span matches. Used to implement span searching. Each span represents a range of ter...
Definition: Spans.h:17
Lucene::SpanNearQueryPtr
boost::shared_ptr< SpanNearQuery > SpanNearQueryPtr
Definition: LuceneTypes.h:447
Lucene::NearSpansUnordered::first
SpansCellPtr first
Definition: NearSpansUnordered.h:32
Lucene
Definition: AbstractAllTermDocs.h:12
Lucene::IndexReaderPtr
boost::shared_ptr< IndexReader > IndexReaderPtr
Definition: LuceneTypes.h:157
Lucene::NearSpansUnordered::max
SpansCellPtr max
Definition: NearSpansUnordered.h:38
Lucene::NearSpansUnordered
Similar to NearSpansOrdered, but for the unordered case.
Definition: NearSpansUnordered.h:17
Lucene::NearSpansUnordered::more
bool more
Definition: NearSpansUnordered.h:40
Lucene::NearSpansUnordered::firstTime
bool firstTime
Definition: NearSpansUnordered.h:41
Lucene::CellQueuePtr
boost::shared_ptr< CellQueue > CellQueuePtr
Definition: LuceneTypes.h:294
Lucene::SpansCellPtr
boost::shared_ptr< SpansCell > SpansCellPtr
Definition: LuceneTypes.h:454
Lucene::NearSpansUnordered::last
SpansCellPtr last
Definition: NearSpansUnordered.h:33
Lucene::NearSpansUnordered::queue
CellQueuePtr queue
Definition: NearSpansUnordered.h:37
Lucene::NearSpansUnordered::slop
int32_t slop
Definition: NearSpansUnordered.h:30
Lucene::NearSpansUnordered::reader
IndexReaderPtr reader
Definition: NearSpansUnordered.h:26
Lucene::NearSpansUnordered::subSpans
Collection< SpansPtr > subSpans
Definition: NearSpansUnordered.h:29
Lucene::NearSpansUnordered::totalLength
int32_t totalLength
Definition: NearSpansUnordered.h:35
Spans.h

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