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ReverseOrdFieldSource.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 REVERSEORDFIELDSOURCE_H
8 #define REVERSEORDFIELDSOURCE_H
9 
10 #include "ValueSource.h"
11 
12 namespace Lucene {
13 
31 class LPPAPI ReverseOrdFieldSource : public ValueSource {
32 public:
35  ReverseOrdFieldSource(const String& field);
37 
39 
40 protected:
41  String field;
42 
43 public:
44  virtual String description();
45  virtual DocValuesPtr getValues(const IndexReaderPtr& reader);
46  virtual bool equals(const LuceneObjectPtr& other);
47  virtual int32_t hashCode();
48 };
49 
50 }
51 
52 #endif
#define LUCENE_CLASS(Name)
Definition: LuceneObject.h:24
Obtains the ordinal of the field value from the default Lucene FieldCache using getStringIndex() and ...
Definition: ReverseOrdFieldSource.h:31
ReverseOrdFieldSource(const String &field)
Constructor for a certain field.
virtual String description()
Description of field, used in explain()
virtual bool equals(const LuceneObjectPtr &other)
Needed for possible caching of query results - used by ValueSourceQuery#equals(LuceneObjectPtr).
virtual int32_t hashCode()
Needed for possible caching of query results - used by ValueSourceQuery#hashCode().
String field
Definition: ReverseOrdFieldSource.h:38
virtual DocValuesPtr getValues(const IndexReaderPtr &reader)
Return the DocValues used by the function query.
Source of values for basic function queries.
Definition: ValueSource.h:21
Definition: AbstractAllTermDocs.h:12
boost::shared_ptr< LuceneObject > LuceneObjectPtr
Definition: LuceneTypes.h:539
boost::shared_ptr< DocValues > DocValuesPtr
Definition: LuceneTypes.h:325
boost::shared_ptr< IndexReader > IndexReaderPtr
Definition: LuceneTypes.h:157

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