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FieldCacheSource.h
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1 
2 // 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 FIELDCACHESOURCE_H
8 #define FIELDCACHESOURCE_H
9 
10 #include "ValueSource.h"
11 
12 namespace Lucene {
13 
28 class LPPAPI FieldCacheSource : public ValueSource {
29 public:
31  FieldCacheSource(const String& field);
32  virtual ~FieldCacheSource();
33 
35 
36 protected:
37  String field;
38 
39 public:
40  virtual DocValuesPtr getValues(const IndexReaderPtr& reader);
41  virtual String description();
42 
47  virtual DocValuesPtr getCachedFieldValues(const FieldCachePtr& cache, const String& field, const IndexReaderPtr& reader) = 0;
48 
49  virtual bool equals(const LuceneObjectPtr& other);
50  virtual int32_t hashCode();
51 
53  virtual bool cachedFieldSourceEquals(const FieldCacheSourcePtr& other) = 0;
54 
57  virtual int32_t cachedFieldSourceHashCode() = 0;
58 };
59 
60 }
61 
62 #endif

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