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 SQLITE_LOCAL_KV_DB_SNAP_SHOT_H
17 #define SQLITE_LOCAL_KV_DB_SNAP_SHOT_H
18 
19 #ifndef OMIT_MULTI_VER
20 #include <string>
21 
22 #include "macro_utils.h"
23 #include "db_errno.h"
24 #include "db_types.h"
25 #include "ikvdb_snapshot.h"
26 #include "sqlite_local_kvdb_connection.h"
27 
28 namespace DistributedDB {
29 class SQLiteLocalKvDBSnapshot : public IKvDBSnapshot {
30 public:
31     explicit SQLiteLocalKvDBSnapshot(IKvDBConnection *connect);
32     ~SQLiteLocalKvDBSnapshot();
33 
34     // Delete the copy and assign constructors
35     DISABLE_COPY_ASSIGN_MOVE(SQLiteLocalKvDBSnapshot);
36 
37     // Get the value of the key
38     int Get(const Key &key, Value &value) const override;
39 
40     // Get the entries of the key set
41     int GetEntries(const Key &keyPrefix, std::vector<Entry> &entries) const override;
42 
43     void Close();
44 
45 private:
46     IKvDBConnection *connect_;
47 };
48 } // namespace DistributedDB
49 #endif // OMIT_MULTI_VER
50 #endif // SQLITE_LOCAL_KV_DB_SNAP_SHOT_H
51