blob: 1c5c57268b90a371b4a584a2a9bd59fd0a97b03a (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
|
// 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 );
virtual ~ShardKey() {}
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;
string _fieldName;
};
}
|
