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
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
|
/**
* Copyright (C) 2019-present MongoDB, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the Server Side Public License, version 1,
* as published by MongoDB, Inc.
*
* 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
* Server Side Public License for more details.
*
* You should have received a copy of the Server Side Public License
* along with this program. If not, see
* <http://www.mongodb.com/licensing/server-side-public-license>.
*
* 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 Server Side 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/optional.hpp>
#include <string>
#include "mongo/base/string_data.h"
#include "mongo/bson/bsonelement.h"
#include "mongo/bson/bsonobj.h"
namespace mongo {
/**
* Code to run as a component of MapReduce.
*/
class MapReduceJavascriptCode {
public:
static MapReduceJavascriptCode parseFromBSON(const BSONElement& element) {
uassert(ErrorCodes::BadValue,
str::stream() << "'" << element.fieldNameStringData()
<< "' must be of string or code type",
element.type() == String || element.type() == Code);
return MapReduceJavascriptCode(element._asCode());
}
MapReduceJavascriptCode() = default;
MapReduceJavascriptCode(std::string&& code) : code(code) {}
void serializeToBSON(StringData fieldName, BSONObjBuilder* builder) const {
(*builder) << fieldName << code;
}
auto getCode() const {
return code;
}
private:
std::string code;
};
/**
* Same as above, but allows for null. This is required for older versions of the Java driver which
* send finalize: null if the argument is omitted by the user.
*/
class MapReduceJavascriptCodeOrNull {
public:
static MapReduceJavascriptCodeOrNull parseFromBSON(const BSONElement& element) {
if (element.type() == jstNULL) {
return MapReduceJavascriptCodeOrNull(boost::none);
}
uassert(ErrorCodes::BadValue,
str::stream() << "'" << element.fieldNameStringData()
<< "' must be of string or code type",
element.type() == String || element.type() == Code);
return MapReduceJavascriptCodeOrNull(boost::make_optional(element._asCode()));
}
MapReduceJavascriptCodeOrNull() = default;
MapReduceJavascriptCodeOrNull(boost::optional<std::string> code) : code(code) {}
void serializeToBSON(StringData fieldName, BSONObjBuilder* builder) const {
if (code == boost::none) {
(*builder) << fieldName << "null";
} else {
(*builder) << fieldName << code.get();
}
}
auto getCode() const {
return code;
}
bool hasCode() const {
return code != boost::none;
}
private:
boost::optional<std::string> code;
};
} // namespace mongo
|
