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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.
*/
#include "mongo/db/query/hint_parser.h"
#include "mongo/bson/bsonobjbuilder.h"
namespace mongo {
/**
* IMPORTANT: The method should not be modified, as API version input/output guarantees could
* break because of it.
*/
BSONObj parseHint(const BSONElement& element) {
if (element.type() == BSONType::String) {
return BSON("$hint" << element.valueStringData());
} else if (element.type() == BSONType::Object) {
return element.Obj().getOwned();
} else {
uasserted(ErrorCodes::FailedToParse, "Hint must be a string or an object");
}
MONGO_UNREACHABLE;
}
/**
* IMPORTANT: The method should not be modified, as API version input/output guarantees could
* break because of it.
*/
void serializeHintToBSON(const BSONObj& hint, StringData fieldName, BSONObjBuilder* builder) {
if (hint.isEmpty())
return;
builder->append(fieldName, hint);
}
} // namespace mongo
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