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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 
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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