1 /*
2  * Copyright (c) 2023 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 RELATIONAL_CURSOR_IMPL_H
17 #define RELATIONAL_CURSOR_IMPL_H
18 
19 #include <memory>
20 
21 #include "oh_cursor.h"
22 #include "result_set.h"
23 #include <memory>
24 
25 namespace OHOS {
26 namespace RdbNdk {
27 constexpr int RDB_CURSOR_CID = 1234563; // The class id used to uniquely identify the OH_Cursor class.
28 class RelationalCursor : public OH_Cursor {
29 public:
30     explicit RelationalCursor(std::shared_ptr<OHOS::NativeRdb::ResultSet> resultSet);
31     virtual ~RelationalCursor() = default;
32 
33 protected:
34     virtual int GetColumnCount(int *count);
35     virtual int GetColumnType(int32_t columnIndex, OH_ColumnType *columnType);
36     virtual int GetColumnIndex(const char *name, int *columnIndex);
37     virtual int GetColumnName(int32_t columnIndex, char *name, int length);
38     virtual int GetRowCount(int *count);
39     virtual int GoToNextRow();
40     virtual int GetSize(int32_t columnIndex, size_t *size);
41     virtual int GetText(int32_t columnIndex, char *value, int length);
42     virtual int GetInt64(int32_t columnIndex, int64_t *value);
43     virtual int GetReal(int32_t columnIndex, double *value);
44     virtual int GetBlob(int32_t columnIndex, unsigned char *value, int length);
45     virtual int GetAsset(int32_t columnIndex, Data_Asset *value);
46     virtual int GetAssets(int32_t columnIndex, Data_Asset **value, uint32_t *length);
47     virtual int GetAssetsCount(int32_t columnIndex, uint32_t *count);
48     virtual int IsNull(int32_t columnIndex, bool *isNull);
49     virtual int Destroy();
50 
51 private:
52     static int GetColumnCount(OH_Cursor *cursor, int *count);
53     static int GetColumnType(OH_Cursor *cursor, int32_t columnIndex, OH_ColumnType *columnType);
54     static int GetColumnIndex(OH_Cursor *cursor, const char *name, int *columnIndex);
55     static int GetColumnName(OH_Cursor *cursor, int32_t columnIndex, char *name, int length);
56     static int GetRowCount(OH_Cursor *cursor, int *count);
57     static int GoToNextRow(OH_Cursor *cursor);
58     static int GetSize(OH_Cursor *cursor, int32_t columnIndex, size_t *size);
59     static int GetText(OH_Cursor *cursor, int32_t columnIndex, char *value, int length);
60     static int GetInt64(OH_Cursor *cursor, int32_t columnIndex, int64_t *value);
61     static int GetReal(OH_Cursor *cursor, int32_t columnIndex, double *value);
62     static int GetBlob(OH_Cursor *cursor, int32_t columnIndex, unsigned char *value, int length);
63     static int GetAsset(OH_Cursor *cursor, int32_t columnIndex, Data_Asset *value);
64     static int GetAssets(OH_Cursor *cursor, int32_t columnIndex, Data_Asset **value, uint32_t *length);
65     static int IsNull(OH_Cursor *cursor, int32_t columnIndex, bool *isNull);
66     static int GetAssetsCount(OH_Cursor *cursor, int32_t columnIndex, uint32_t *count);
67     static int Destroy(OH_Cursor *cursor);
68     static RelationalCursor *GetSelf(OH_Cursor *cursor);
69     std::shared_ptr<OHOS::NativeRdb::ResultSet> resultSet_;
70 };
71 } // namespace RdbNdk
72 } // namespace OHOS
73 #endif // RELATIONAL_CURSOR_IMPL_H
74