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FieldCacheSource.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 FIELDCACHESOURCE_H
8 #define FIELDCACHESOURCE_H
9
10 #include "ValueSource.h"
11
12 namespace Lucene
13 {
28 class LPPAPI FieldCacheSource : public ValueSource
29 {
30 public:
32 FieldCacheSource(const String& field);
33 virtual ~FieldCacheSource();
34
35 LUCENE_CLASS(FieldCacheSource);
36
37 protected:
38 String field;
39
40 public:
41 virtual DocValuesPtr getValues(IndexReaderPtr reader);
42 virtual String description();
43
48 virtual DocValuesPtr getCachedFieldValues(FieldCachePtr cache, const String& field, IndexReaderPtr reader) = 0;
49
50 virtual bool equals(LuceneObjectPtr other);
51 virtual int32_t hashCode();
52
54 virtual bool cachedFieldSourceEquals(FieldCacheSourcePtr other) = 0;
55
58 virtual int32_t cachedFieldSourceHashCode() = 0;
59 };
60 }
61
62 #endif

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