* Copyright (c) Huawei Technologies Co., Ltd. 2025. All rights reserved.
* You can use this software according to the terms and conditions of the Mulan PSL v2.
* You may obtain a copy of Mulan PSL v2 at:
* http://license.coscl.org.cn/MulanPSL2
* THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
* EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
* MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
* See the Mulan PSL v2 for more details.
*/
#ifndef OMNISTREAM_KEYSELECT_H
#define OMNISTREAM_KEYSELECT_H
#include <memory>
#include "basictypes/Object.h"
* T: Object
* */
template<typename T>
class KeySelect {
public:
virtual T* getKey(T* value) = 0;
};
template<typename T>
using KeySelectUnique = std::unique_ptr<KeySelect<T>>;
#endif
