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FilteredTermEnum.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 FILTEREDTERMENUM_H
8 #define FILTEREDTERMENUM_H
9
10 #include "TermEnum.h"
11
12 namespace Lucene
13 {
18 class LPPAPI FilteredTermEnum : public TermEnum
19 {
20 public:
21 virtual ~FilteredTermEnum();
22 LUCENE_CLASS(FilteredTermEnum);
23
24 protected:
26 TermPtr currentTerm;
27
29 TermEnumPtr actualEnum;
30
31 public:
33 virtual double difference() = 0;
34
37 virtual int32_t docFreq();
38
40 virtual bool next();
41
44 virtual TermPtr term();
45
47 virtual void close();
48
49 protected:
51 virtual bool termCompare(TermPtr term) = 0;
52
54 virtual bool endEnum() = 0;
55
58 virtual void setEnum(TermEnumPtr actualEnum);
59 };
60 }
61
62 #endif

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