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// fts_query.h
/**
* Copyright (C) 2012 10gen Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* As a special exception, the copyright holders give permission to link the
* code of portions of this program with the OpenSSL library under certain
* conditions as described in each individual source file and distribute
* linked combinations including the program with the OpenSSL library. You
* must comply with the GNU Affero General Public License in all respects for
* all of the code used other than as permitted herein. If you modify file(s)
* with this exception, you may extend this exception to your version of the
* file(s), but you are not obligated to do so. If you do not wish to do so,
* delete this exception statement from your version. If you delete this
* exception statement from all source files in the program, then also delete
* it in the license file.
*/
#pragma once
#include <string>
#include <vector>
#include "mongo/base/status.h"
#include "mongo/db/fts/stemmer.h"
#include "mongo/db/fts/stop_words.h"
#include "mongo/platform/unordered_set.h"
#include "mongo/util/stringutils.h"
namespace mongo {
namespace fts {
using std::string;
using std::vector;
using std::set;
class FTSQuery {
public:
Status parse(const string& query, const string& language);
const vector<string>& getTerms() const { return _terms; }
const unordered_set<string>& getNegatedTerms() const { return _negatedTerms; }
const vector<string>& getPhr() const { return _phrases; }
const vector<string>& getNegatedPhr() const { return _negatedPhrases; }
/**
* @return true if any negations or phrase + or -
*/
bool hasNonTermPieces() const {
return
_negatedTerms.size() > 0 ||
_phrases.size() > 0 ||
_negatedPhrases.size() > 0;
}
string getSearch() const { return _search; }
string getLanguage() const { return _language; }
string toString() const;
string debugString() const;
protected:
string _search;
string _language;
vector<string> _terms;
unordered_set<string> _negatedTerms;
vector<string> _phrases;
vector<string> _negatedPhrases;
private:
void _addTerm( const StopWords* sw, Stemmer& stemmer, const string& term, bool negated );
};
}
}
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