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FuzzyQuery.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 FUZZYQUERY_H
8 #define FUZZYQUERY_H
9 
10 #include "MultiTermQuery.h"
11 
12 namespace Lucene {
13 
19 class LPPAPI FuzzyQuery : public MultiTermQuery {
20 public:
29  FuzzyQuery(const TermPtr& term, double minimumSimilarity, int32_t prefixLength);
30  FuzzyQuery(const TermPtr& term, double minimumSimilarity);
31  FuzzyQuery(const TermPtr& term);
32 
33  virtual ~FuzzyQuery();
34 
36 
37 protected:
38  double minimumSimilarity;
39  int32_t prefixLength;
41 
43 
44 public:
45  static double defaultMinSimilarity();
46  static const int32_t defaultPrefixLength;
47 
48 public:
50 
53  double getMinSimilarity();
54 
57  int32_t getPrefixLength();
58 
60  TermPtr getTerm();
61 
62  virtual void setRewriteMethod(const RewriteMethodPtr& method);
63  virtual QueryPtr rewrite(const IndexReaderPtr& reader);
64 
65  virtual LuceneObjectPtr clone(const LuceneObjectPtr& other = LuceneObjectPtr());
66  virtual String toString(const String& field);
67  virtual int32_t hashCode();
68  virtual bool equals(const LuceneObjectPtr& other);
69 
70 protected:
71  void ConstructQuery(const TermPtr& term, double minimumSimilarity, int32_t prefixLength);
72 
73  virtual FilteredTermEnumPtr getEnum(const IndexReaderPtr& reader);
74 };
75 
76 }
77 
78 #endif
virtual String toString()
Prints a query to a string.
boost::shared_ptr< Term > TermPtr
Definition: LuceneTypes.h:233
boost::shared_ptr< LuceneObject > LuceneObjectPtr
Definition: LuceneTypes.h:539
bool termLongEnough
Definition: FuzzyQuery.h:40
TermPtr term
Definition: FuzzyQuery.h:42
static const int32_t defaultPrefixLength
Definition: FuzzyQuery.h:46
An abstract Query that matches documents containing a subset of terms provided by a FilteredTermEnum ...
Definition: MultiTermQuery.h:31
boost::shared_ptr< Query > QueryPtr
Definition: LuceneTypes.h:420
boost::shared_ptr< RewriteMethod > RewriteMethodPtr
Definition: LuceneTypes.h:425
boost::shared_ptr< IndexReader > IndexReaderPtr
Definition: LuceneTypes.h:157
#define LUCENE_CLASS(Name)
Definition: LuceneObject.h:24
Definition: AbstractAllTermDocs.h:12
Implements the fuzzy search query. The similarity measurement is based on the Levenshtein (edit dista...
Definition: FuzzyQuery.h:19
int32_t prefixLength
Definition: FuzzyQuery.h:39
boost::shared_ptr< FilteredTermEnum > FilteredTermEnumPtr
Definition: LuceneTypes.h:365

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