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72 lines
1.5 KiB
C
72 lines
1.5 KiB
C
3 years ago
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#ifndef _ExactWordQuery_h_
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#define _ExactWordQuery_h_
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//
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// ExactWordQuery.h
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//
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// ExactWordQuery: A Query tree leaf object. Wraps a database access
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// that generates ResultLists for word matches.
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//
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// Part of the ht://Dig package <http://www.htdig.org/>
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// Copyright (c) 1995-2004 The ht://Dig Group
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// For copyright details, see the file COPYING in your distribution
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// or the GNU Library General Public License (LGPL) version 2 or later
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// <http://www.gnu.org/copyleft/lgpl.html>
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//
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// $Id: ExactWordQuery.h,v 1.4 2004/05/28 13:15:24 lha Exp $
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//
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#ifdef HAVE_CONFIG_H
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#include "htconfig.h"
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#endif
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#include "Query.h"
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class WordSearcher;
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class ExactWordQuery : public Query
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{
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public:
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// construct for word w
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ExactWordQuery(const String &w) :
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word(w), weight(1.0) {}
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// destruct
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~ExactWordQuery() {}
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// set the common db wrapper
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static void SetSearcher(WordSearcher *c) { searcher = c; }
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// weight accessor
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void SetWeight(double x) { weight = x; }
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double GetWeight() const { return weight; }
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private:
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// forbidden
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ExactWordQuery() {}
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// go search the db
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ResultList *Evaluate();
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// set my weight to the list
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void AdjustWeight(ResultList &);
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// unparse
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String GetLogicalWords() const { return word; }
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// unique cache index
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String GetSignature() const
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{ return String("Exact:")+GetLogicalWords(); }
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// i represent this
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String word;
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// my weight
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double weight;
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// db wrapper common to all word queries
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static WordSearcher *searcher;
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};
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#endif
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