1 /* 2 * Copyright (c) 2021 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 #ifndef RELATIONAL_DB_SYNC_INTERFACE_H 16 #define RELATIONAL_DB_SYNC_INTERFACE_H 17 #ifdef RELATIONAL_STORE 18 19 #include "query_sync_object.h" 20 #include "relational_schema_object.h" 21 #include "single_ver_kv_entry.h" 22 #include "sync_generic_interface.h" 23 #include "schema_negotiate.h" 24 25 namespace DistributedDB { 26 class RelationalDBSyncInterface : public SyncGenericInterface { 27 public: ~RelationalDBSyncInterface()28 ~RelationalDBSyncInterface() override {}; 29 30 virtual RelationalSchemaObject GetSchemaInfo() const = 0; 31 32 // Get batch meta data associated with the given key. 33 virtual int GetBatchMetaData(const std::vector<Key> &keys, std::vector<Entry> &entries) const = 0; 34 // Put batch meta data as a key-value entry vector 35 virtual int PutBatchMetaData(std::vector<Entry> &entries) = 0; 36 37 virtual std::vector<QuerySyncObject> GetTablesQuery() = 0; 38 39 virtual int LocalDataChanged(int notifyEvent, std::vector<QuerySyncObject> &queryObj) = 0; 40 41 virtual int CreateDistributedDeviceTable(const std::string &device, const RelationalSyncStrategy &syncStrategy) = 0; 42 43 virtual int RegisterSchemaChangedCallback(const std::function<void()> &callback) = 0; 44 }; 45 } 46 #endif // RELATIONAL_STORE 47 #endif