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 OBJECT_STORAGE_ENGINE_H 17 #define OBJECT_STORAGE_ENGINE_H 18 19 #include <cstdint> 20 #include <map> 21 #include <vector> 22 23 #include "kv_store_observer.h" 24 #include "watcher.h" 25 26 namespace OHOS::ObjectStore { 27 using Key = std::vector<uint8_t>; 28 using Value = std::vector<uint8_t>; 29 using Field = std::vector<uint8_t>; 30 31 class TableWatcher : public Watcher { 32 public: TableWatcher(const std::string & sessionId)33 TableWatcher(const std::string &sessionId) : Watcher(sessionId) 34 { 35 } 36 virtual void OnChanged(const std::string &sessionid, const std::vector<std::string> &changedData) = 0; 37 }; 38 39 class StatusWatcher { 40 public: 41 virtual void OnChanged( 42 const std::string &sessionId, const std::string &networkId, const std::string &onlineStatus) = 0; 43 }; 44 45 class ObjectStorageEngine { 46 public: 47 ObjectStorageEngine(const ObjectStorageEngine &) = delete; 48 ObjectStorageEngine &operator=(const ObjectStorageEngine &) = delete; 49 ObjectStorageEngine(ObjectStorageEngine &&) = delete; 50 ObjectStorageEngine &operator=(ObjectStorageEngine &&) = delete; 51 ObjectStorageEngine() = default; 52 virtual ~ObjectStorageEngine() = default; 53 virtual uint32_t Open(const std::string &bundleName) = 0; 54 virtual uint32_t Close() = 0; 55 virtual uint32_t DeleteTable(const std::string &key) = 0; 56 virtual uint32_t CreateTable(const std::string &key) = 0; 57 virtual uint32_t GetTable(const std::string &key, std::map<std::string, Value> &result) = 0; 58 virtual uint32_t UpdateItem(const std::string &key, const std::string &itemKey, Value &value) = 0; 59 virtual uint32_t UpdateItems(const std::string &key, const std::map<std::string, std::vector<uint8_t>> &data) = 0; 60 virtual uint32_t GetItem(const std::string &key, const std::string &itemKey, Value &value) = 0; 61 virtual uint32_t GetItems(const std::string &key, std::map<std::string, std::vector<uint8_t>> &data) = 0; 62 virtual uint32_t RegisterObserver(const std::string &key, std::shared_ptr<TableWatcher> watcher) = 0; 63 virtual uint32_t UnRegisterObserver(const std::string &key) = 0; 64 virtual uint32_t SetStatusNotifier(std::shared_ptr<StatusWatcher> watcher) = 0; 65 }; 66 } // namespace OHOS::ObjectStore 67 #endif