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/**
* 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 "mongo/base/string_data.h"
#include "mongo/bson/bsonelement.h"
#include "mongo/bson/bsonobj.h"
namespace mongo {
/**
* Parsed MapReduce Global variable scope.
*/
class MapReduceGlobalVariableScope {
public:
static MapReduceGlobalVariableScope parseFromBSON(const BSONElement& element) {
if (element.type() == jstNULL) {
return MapReduceGlobalVariableScope();
}
uassert(ErrorCodes::BadValue, "'scope' must be an object", element.type() == Object);
return MapReduceGlobalVariableScope(element.embeddedObject());
}
MapReduceGlobalVariableScope() = default;
MapReduceGlobalVariableScope(const BSONObj& obj) : obj(boost::make_optional(obj.getOwned())) {}
void serializeToBSON(StringData fieldName, BSONObjBuilder* builder) const {
if (obj == boost::none) {
builder->append(fieldName, "null");
}
builder->append(fieldName, obj.get());
}
boost::optional<BSONObj> getObj() const {
return obj;
}
private:
// Initializers for global variables. These will be directly executed as Javascript. This is
// left as a BSONObj for that API.
boost::optional<BSONObj> obj;
};
} // namespace mongo
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