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 #ifndef OHOS_DISTRIBUTED_DATA_FRAMEWORKS_KVDB_STORE_RESULT_SET_H
16 #define OHOS_DISTRIBUTED_DATA_FRAMEWORKS_KVDB_STORE_RESULT_SET_H
17 #include <memory>
18 #include <shared_mutex>
19 #include "convertor.h"
20 #include "kv_store_nb_delegate.h"
21 #include "kv_store_result_set.h"
22 #include "kvstore_result_set.h"
23 namespace OHOS::DistributedKv {
24 class StoreResultSet : public KvStoreResultSet {
25 public:
26     using DBResultSet = DistributedDB::KvStoreResultSet;
27     using DBStore = DistributedDB::KvStoreNbDelegate;
28     using DBEntry = DistributedDB::Entry;
29     StoreResultSet(DBResultSet *impl, std::shared_ptr<DBStore> dbStore, const Convertor &convert);
30     ~StoreResultSet();
31     int GetCount() const override;
32     int GetPosition() const override;
33     bool MoveToFirst() override;
34     bool MoveToLast() override;
35     bool MoveToNext() override;
36     bool MoveToPrevious() override;
37     bool Move(int offset) override;
38     bool MoveToPosition(int position) override;
39     bool IsFirst() const override;
40     bool IsLast() const override;
41     bool IsBeforeFirst() const override;
42     bool IsAfterLast() const override;
43     Status GetEntry(Entry &entry) const override;
44     Status Close() override;
45 
46 private:
47     mutable std::shared_mutex mutex_;
48     DBResultSet *impl_;
49     std::shared_ptr<DBStore> dbStore_;
50     const Convertor &convert_;
51 };
52 } // namespace OHOS::DistributedKv
53 #endif // OHOS_DISTRIBUTED_DATA_FRAMEWORKS_KVDB_STORE_RESULT_SET_H
54