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 16 #ifndef NATIVE_RDB_RESULT_SET_H 17 #define NATIVE_RDB_RESULT_SET_H 18 19 #include <map> 20 #include <string> 21 #include <vector> 22 23 #include "rdb_errno.h" 24 #include "remote_result_set.h" 25 #include "value_object.h" 26 namespace OHOS { 27 namespace NativeRdb { 28 struct API_EXPORT RowEntity { 29 public: 30 API_EXPORT void Put(const std::string &name, int32_t index, ValueObject &&value); 31 API_EXPORT ValueObject Get(const std::string &name) const; 32 API_EXPORT ValueObject Get(int index) const; 33 API_EXPORT const std::map<std::string, ValueObject> &Get() const; 34 API_EXPORT std::map<std::string, ValueObject> Steal(); 35 API_EXPORT void Clear(int32_t size); 36 37 private: 38 std::map<std::string, ValueObject> values_; 39 std::vector<decltype(values_)::iterator> indexs_; 40 }; 41 42 /** 43 * The ResultSet class of RDB. 44 * Provides methods for accessing a database result set generated by querying the database. 45 */ 46 class API_EXPORT ResultSet : public RemoteResultSet { 47 public: 48 /** 49 * @brief Destructor. 50 */ ~ResultSet()51 virtual ~ResultSet() {} 52 53 virtual int GetAsset(int32_t col, ValueObject::Asset &value) = 0; 54 virtual int GetAssets(int32_t col, ValueObject::Assets &value) = 0; GetFloat32Array(int32_t index,ValueObject::FloatVector & vecs)55 virtual int GetFloat32Array(int32_t index, ValueObject::FloatVector &vecs) 56 { 57 return E_NOT_SUPPORT; 58 } 59 virtual int Get(int32_t col, ValueObject &value) = 0; 60 /** 61 * @brief Gets the entire row of data for the current row from the result set. 62 */ 63 virtual int GetRow(RowEntity &rowEntity) = 0; 64 65 /** 66 * @brief Get the size of blob or text. 67 * 68 * @param columnIndex Indicates the zero-based index of the target column. 69 */ 70 API_EXPORT virtual int GetSize(int columnIndex, size_t &size) = 0; 71 }; 72 73 } // namespace NativeRdb 74 } // namespace OHOS 75 #endif 76