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ConstantScoreQuery.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 CONSTANTSCOREQUERY_H
8#define CONSTANTSCOREQUERY_H
9
10#include "Query.h"
11#include "Weight.h"
12#include "Scorer.h"
13
14 namespace Lucene {
15
18 class LPPAPI ConstantScoreQuery : public Query {
19 public:
20 ConstantScoreQuery(const FilterPtr& filter);
21 virtual ~ConstantScoreQuery();
22
23 LUCENE_CLASS(ConstantScoreQuery);
24
25 protected:
26 FilterPtr filter;
27
28 public:
29 using Query::toString;
30
32 FilterPtr getFilter();
33
34 virtual QueryPtr rewrite(const IndexReaderPtr& reader);
35 virtual void extractTerms(SetTerm terms);
36
37 virtual WeightPtr createWeight(const SearcherPtr& searcher);
38
40 virtual String toString(const String& field);
41
42 virtual bool equals(const LuceneObjectPtr& other);
43 virtual int32_t hashCode();
44 virtual LuceneObjectPtr clone(const LuceneObjectPtr& other = LuceneObjectPtr());
45
46 friend class ConstantWeight;
47 friend class ConstantScorer;
48};
49
50}
51
52#endif
LUCENE_CLASS
#define LUCENE_CLASS(Name)
Definition LuceneObject.h:24
Query.h
Scorer.h
Weight.h
Lucene::ConstantScoreQuery
A query that wraps a filter and simply returns a constant score equal to the query boost for every do...
Definition ConstantScoreQuery.h:18
Lucene::ConstantScoreQuery::getFilter
FilterPtr getFilter()
Returns the encapsulated filter.
Lucene::ConstantScoreQuery::ConstantScoreQuery
ConstantScoreQuery(const FilterPtr &filter)
Lucene::ConstantScoreQuery::rewrite
virtual QueryPtr rewrite(const IndexReaderPtr &reader)
Called to re-write queries into primitive queries. For example, a PrefixQuery will be rewritten into ...
Lucene::ConstantScoreQuery::toString
virtual String toString(const String &field)
Prints a user-readable version of this query.
Lucene::ConstantScoreQuery::equals
virtual bool equals(const LuceneObjectPtr &other)
Return whether two objects are equal.
Lucene::ConstantScoreQuery::clone
virtual LuceneObjectPtr clone(const LuceneObjectPtr &other=LuceneObjectPtr())
Returns a clone of this query.
Lucene::ConstantScoreQuery::extractTerms
virtual void extractTerms(SetTerm terms)
Adds all terms occurring in this query to the terms set. Only works if this query is in its rewritten...
Lucene::ConstantScoreQuery::~ConstantScoreQuery
virtual ~ConstantScoreQuery()
Lucene::ConstantScoreQuery::filter
FilterPtr filter
Definition ConstantScoreQuery.h:26
Lucene::ConstantScoreQuery::createWeight
virtual WeightPtr createWeight(const SearcherPtr &searcher)
Constructs an appropriate Weight implementation for this query. Only implemented by primitive queries...
Lucene::ConstantScoreQuery::hashCode
virtual int32_t hashCode()
Return hash code for this object.
Lucene::Query
The abstract base class for queries.
Definition Query.h:31
Lucene
Definition AbstractAllTermDocs.h:12
Lucene::LuceneObjectPtr
boost::shared_ptr< LuceneObject > LuceneObjectPtr
Definition LuceneTypes.h:539
Lucene::QueryPtr
boost::shared_ptr< Query > QueryPtr
Definition LuceneTypes.h:420
Lucene::SearcherPtr
boost::shared_ptr< Searcher > SearcherPtr
Definition LuceneTypes.h:434
Lucene::IndexReaderPtr
boost::shared_ptr< IndexReader > IndexReaderPtr
Definition LuceneTypes.h:157
Lucene::FilterPtr
boost::shared_ptr< Filter > FilterPtr
Definition LuceneTypes.h:358
Lucene::WeightPtr
boost::shared_ptr< Weight > WeightPtr
Definition LuceneTypes.h:480

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