1 /* 2 * Copyright (c) 2024 Huawei Device Co., Ltd. 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 16 #ifndef DISTRIBUTEDDATAMGR_VERSION_META_DATA_H 17 #define DISTRIBUTEDDATAMGR_VERSION_META_DATA_H 18 #include "serializable/serializable.h" 19 20 namespace OHOS::DistributedData { 21 class API_EXPORT VersionMetaData final : public Serializable { 22 public: 23 static constexpr int32_t CURRENT_VERSION = 4; 24 static constexpr int32_t INVALID_VERSION = -1; 25 int32_t version = INVALID_VERSION; 26 27 API_EXPORT VersionMetaData(); 28 API_EXPORT ~VersionMetaData(); 29 API_EXPORT bool Marshal(json &node) const override; 30 API_EXPORT bool Unmarshal(const json &node) override; 31 API_EXPORT std::string GetKey() const; 32 33 private: 34 static constexpr const char *KEY_PREFIX = "VersionKey"; 35 }; 36 } // namespace OHOS::DistributedData 37 #endif // DISTRIBUTEDDATAMGR_VERSION_META_DATA_H