mirror of
https://github.com/mongodb/mongo.git
synced 2024-12-01 09:32:32 +01:00
55 lines
1.6 KiB
C++
55 lines
1.6 KiB
C++
// shardkey.h
|
|
|
|
/**
|
|
* Copyright (C) 2008 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 "../client/dbclient.h"
|
|
|
|
namespace mongo {
|
|
|
|
class ShardKey {
|
|
public:
|
|
ShardKey( BSONObj fieldsAndOrder = emptyObj );
|
|
void init( BSONObj fieldsAndOrder );
|
|
|
|
void globalMin( BSONObjBuilder & b );
|
|
BSONObj globalMin(){ BSONObjBuilder b; globalMin( b ); return b.obj(); }
|
|
|
|
void globalMax( BSONObjBuilder & b );
|
|
BSONObj globalMax(){ BSONObjBuilder b; globalMax( b ); return b.obj(); }
|
|
|
|
void middle( BSONObjBuilder & b , BSONObj & min , BSONObj & max );
|
|
BSONObj middle( BSONObj & min , BSONObj & max ){ BSONObjBuilder b; middle( b , min , max ); return b.obj(); }
|
|
|
|
int compare( const BSONObj& l , const BSONObj& r ) const;
|
|
|
|
BSONObj& key(){
|
|
return _fieldsAndOrder;
|
|
}
|
|
|
|
virtual string toString() const;
|
|
|
|
private:
|
|
void _init();
|
|
BSONObj _fieldsAndOrder;
|
|
const char * _fieldName;
|
|
};
|
|
|
|
void shardKeyTest();
|
|
}
|