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/**
* Copyright (C) 2013 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 <boost/scoped_ptr.hpp>
#include "mongo/base/status.h"
#include "mongo/db/index/btree_based_access_method.h"
#include "mongo/db/index/btree_key_generator.h"
#include "mongo/db/index/index_access_method.h"
#include "mongo/db/jsobj.h"
namespace mongo {
class IndexCursor;
class IndexDescriptor;
/**
* The IndexAccessMethod for a Btree index.
* Any index created with {field: 1} or {field: -1} uses this.
*/
class BtreeAccessMethod : public BtreeBasedAccessMethod {
public:
// Every Btree-based index needs these. We put them in the BtreeBasedAccessMethod
// superclass and subclasses (like this) can use them.
using BtreeBasedAccessMethod::_descriptor;
BtreeAccessMethod(IndexCatalogEntry* btreeState,
RecordStore* rs );
virtual ~BtreeAccessMethod() { }
private:
virtual void getKeys(const BSONObj& obj, BSONObjSet* keys);
// Our keys differ for V0 and V1.
scoped_ptr<BtreeKeyGenerator> _keyGenerator;
};
} // namespace mongo
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