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// strategy.h
/*
* Copyright (C) 2010 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/>.
*/
#pragma once
#include "../pch.h"
#include "chunk.h"
#include "request.h"
namespace mongo {
class Strategy {
public:
Strategy() {}
virtual ~Strategy() {}
virtual void queryOp( Request& r ) = 0;
virtual void getMore( Request& r ) = 0;
virtual void writeOp( int op , Request& r ) = 0;
protected:
void doWrite( int op , Request& r , const Shard& shard , bool checkVersion = true );
void doQuery( Request& r , const Shard& shard );
void insert( const Shard& shard , const char * ns , const BSONObj& obj );
};
extern Strategy * SINGLE;
extern Strategy * SHARDED;
}
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