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 DATASHARE_HELPER_H
17#define DATASHARE_HELPER_H
18
19#include <cstdint>
20#include <string>
21
22#include "data_ability_observer_interface.h"
23#include "datashare_value_object.h"
24#include "datashare_values_bucket.h"
25#include "uri.h"
26
27namespace OHOS {
28namespace DataShare {
29constexpr int32_t E_OK = 0;
30class DataSharePredicates {
31public:
32    DataSharePredicates *EqualTo(const std::string &field, const std::string &value);
33};
34class DatashareBusinessError {};
35class DataShareResultSet {
36public:
37    DataShareResultSet() = default;
38    ~DataShareResultSet() = default;
39    static int32_t GetRowCount(int32_t &count);
40    static int32_t Close();
41    static int32_t GoToFirstRow();
42    static int32_t GetColumnIndex(const std::string &columnName, int32_t &columnIndex);
43    int32_t GetString(int columnIndex, std::string &value) const;
44
45private:
46    std::string strValue_;
47};
48
49class DataShareHelper {
50public:
51    DataShareHelper() = default;
52    ~DataShareHelper() = default;
53    static std::shared_ptr<DataShareHelper> Creator(
54        const sptr<IRemoteObject> &token, const std::string &strUri, const std::string &extUri);
55    std::shared_ptr<DataShareResultSet> Query(Uri &uri, const DataSharePredicates &predicates,
56        std::vector<std::string> &columns, DatashareBusinessError *businessError = nullptr);
57    static void RegisterObserver(const Uri &uri, const sptr<AAFwk::IDataAbilityObserver> &dataObserver);
58    static void UnregisterObserver(const Uri &uri, const sptr<AAFwk::IDataAbilityObserver> &dataObserver);
59    static bool Release();
60    static int Update(Uri &uri, const DataSharePredicates &predicates, const DataShareValuesBucket &value);
61    static int Insert(Uri &uri, const DataShareValuesBucket &value);
62
63private:
64    static std::shared_ptr<DataShareHelper> instance_;
65    std::shared_ptr<DataShareResultSet> resultSet_;
66};
67} // namespace DataShare
68} // namespace OHOS
69#endif // DATASHARE_HELPER_H
70