1 /* 2 * Copyright (c) 2022 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 BASE_NOTIFICATION_ANS_STANDARD_SERVICES_DISTRIBUTED_INCLUDE_DISTRIBUTED_DATABASE_CALLBACK_H 17 #define BASE_NOTIFICATION_ANS_STANDARD_SERVICES_DISTRIBUTED_INCLUDE_DISTRIBUTED_DATABASE_CALLBACK_H 18 19 #include <string> 20 21 #include "kvstore_observer.h" 22 23 namespace OHOS { 24 namespace Notification { 25 class DistributedDatabaseCallback : public DistributedKv::KvStoreObserver { 26 public: 27 struct IDatabaseChange { 28 std::function<void(const std::string &deviceId, const std::string &key, const std::string &value)> OnInsert; 29 std::function<void(const std::string &deviceId, const std::string &key, const std::string &value)> OnUpdate; 30 std::function<void(const std::string &deviceId, const std::string &key, const std::string &value)> OnDelete; 31 }; 32 explicit DistributedDatabaseCallback(const IDatabaseChange &callback); 33 ~DistributedDatabaseCallback(); 34 private: 35 void OnChange(const DistributedKv::ChangeNotification &changeNotification, 36 std::shared_ptr<DistributedKv::KvStoreSnapshot> snapshot) override; 37 void OnChange(const DistributedKv::ChangeNotification &changeNotification) override; 38 39 private: 40 IDatabaseChange callback_; 41 }; 42 } // namespace Notification 43 } // namespace OHOS 44 45 #endif /* BASE_NOTIFICATION_ANS_STANDARD_SERVICES_DISTRIBUTED_INCLUDE_DISTRIBUTED_DATABASE_CALLBACK_H */