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/**
* Copyright 2016 (c) 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/>.
*
* 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 GNU Affero General 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.
*/
#include "mongo/platform/basic.h"
#include "mongo/db/pipeline/document_source.h"
#include <boost/optional.hpp>
#include <boost/smart_ptr/intrusive_ptr.hpp>
#include "mongo/db/pipeline/parsed_add_fields.h"
namespace mongo {
using boost::intrusive_ptr;
using parsed_aggregation_projection::ParsedAddFields;
REGISTER_DOCUMENT_SOURCE_ALIAS(addFields, DocumentSourceAddFields::createFromBson);
std::vector<intrusive_ptr<DocumentSource>> DocumentSourceAddFields::createFromBson(
BSONElement elem, const intrusive_ptr<ExpressionContext>& expCtx) {
// Confirm that the stage was called with an object.
uassert(40272,
str::stream() << "$addFields specification stage must be an object, got "
<< typeName(elem.type()),
elem.type() == Object);
// Create the AddFields aggregation stage.
return {new DocumentSourceSingleDocumentTransformation(
expCtx, ParsedAddFields::create(elem.Obj()), "$addFields")};
};
}
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