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// fts_index_format.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 "mongo/base/string_data.h"
#include "mongo/bson/bsonobj_comparator_interface.h"
#include "mongo/db/fts/fts_util.h"
namespace mongo {
namespace fts {
class FTSSpec;
class FTSIndexFormat {
public:
static void getKeys(const FTSSpec& spec, const BSONObj& document, BSONObjSet* keys);
/**
* Helper method to get return entry from the FTSIndex as a BSONObj
* @param weight, the weight of the term in the entry
* @param term, the std::string term in the entry
* @param indexPrefix, the fields that go in the index first
* @param textIndexVersion, index version. affects key format.
*/
static BSONObj getIndexKey(double weight,
const std::string& term,
const BSONObj& indexPrefix,
TextIndexVersion textIndexVersion);
private:
/**
* Helper method to get return entry from the FTSIndex as a BSONObj
* @param b, reference to the BSONOBjBuilder
* @param weight, the weight of the term in the entry
* @param term, the std::string term in the entry
* @param textIndexVersion, index version. affects key format.
*/
static void _appendIndexKey(BSONObjBuilder& b,
double weight,
const std::string& term,
TextIndexVersion textIndexVersion);
};
}
}
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