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README
Apache-2.0

数据库及持久化

简介

数据库及持久化模块负责电话服务子系统中的SIM卡/短彩信等模块持久化数据存储,提供DataShare访问接口。

图 1 数据库及持久化架构图

目录

/base/telephony/data_storage     # 数据库及持久化
├─ common                           # 通用文件
│  ├─ include                      # 头文件目录
│  └─ src                          # 实现代码目录
├─ figures                          # Readme资源文件
├─ opkey                            # 随卡框架
│  ├─ include                  # 头文件目录
│  └─ src                    # 实现代码目录
├─ pdp_profile                      # 网络运营商
│  ├─ include                      # 头文件目录
│  └─ src                          # 实现代码目录
├─ signature                        # 签名文件
├─ sim                              # sim卡
│  ├─ include                      # 头文件目录
│  └─ src                          # 实现代码目录
├─ sms_mms                          # 短彩信
│  ├─ include                      # 头文件目录
│  └─ src                          # 实现代码目录
└─ test                             # 测试相关
   └── unit_test                   # 单元测试相关代码

约束

  • 开发语言:C++

  • 软件约束:需要与以下服务配合使用:公共基础子库系统,应用框架子系统。

  • 硬件约束:无

  • 使用场景:当用户需要获取电话服务子系统中的SIM卡/短彩信等模块持久化数据时,可通过DataShareHelper提供的增/删/改/查接口来获取数据。

    访问时需要提供对应的权限和URI。

接口说明

表 1 增/删/改/查接口

接口定义 接口描述
int Insert(Uri &uri, const DataShare::DataShareValuesBucket &value) 插入数据      
int Delete(const Uri &uri, const DataShare::DataSharePredicates &predicates) 删除数据      
int Update(Uri &uri, const DataSharePredicates &predicates, const DataShareValuesBucket &value) 更新数据      
std::shared_ptr<DataShare::DataShareResultSet> Query(Uri &uri, const DataSharePredicates &predicates, std::vector<std::string> &columns) 查询数据      

表 2 权限说明

模块 所需权限
短彩信模块 ohos.permission.READ_MESSAGES
SIM卡模块 ohos.permission.GET_TELEPHONY_STATE
ohos.permission.SET_TELEPHONY_STATE
网络运营商模块 ohos.permission.GET_TELEPHONY_STATE
ohos.permission.SET_TELEPHONY_STATE
随卡框架模块 ohos.permission.GET_TELEPHONY_STATE
ohos.permission.SET_TELEPHONY_STATE

使用说明

插入接口参数说明

表 3 Insert接口参数说明

参数 说明
uri 资源路径
value 数据集合,字段对应当前操作的表结构字段

删除接口参数说明

表 4 Delete接口参数说明

参数 说明
uri 资源路径
predicates 删除条件

更新接口参数说明

表 5 Update接口参数说明

参数 说明
uri 资源路径
predicates 更新条件
value 数据集合,字段对应当前操作的表结构字段

查询接口参数说明

表 6 Query接口参数说明

参数 说明
uri 资源路径
predicates 查询条件
columns 查询返回的字段

接口调用代码示例

以查询/插入/删除/更新短彩信数据为例,主要步骤和代码如下:

  1. 使用SystemAbilityManagerClient获得SystemAbilityManager对象。

  2. 使用saManager获得指定服务Id的IRemoteObject对象。

  3. 使用IRemoteObject创建DataShareHelper对象。

  4. 调用DataShareHelper::Query接口访问,并接收处理返回的数据。

    创建DataShareHelper:

    std::shared_ptr<DataShare::DataShareHelper> DataStorageGtest::CreateDataShareHelper(
        int32_t systemAbilityId, std::string &uri)
    {
        //通过SystemAbilityManagerClient获得SystemAbilityManager
        auto saManager = SystemAbilityManagerClient::GetInstance().GetSystemAbilityManager();
        if (saManager == nullptr) {
            DATA_STORAGE_LOGE("DataSimRdbHelper Get system ability mgr failed.");
            return nullptr;
        }
        // 获得IRemoteObject
        auto remoteObj = saManager->GetSystemAbility(systemAbilityId);
        while (remoteObj == nullptr) {
            DATA_STORAGE_LOGE("DataSimRdbHelper GetSystemAbility Service Failed.");
            return nullptr;
        }
        // 创建DataShareHelper
        return DataShare::DataShareHelper::Creator(remoteObj, uri);
    }

    查询短彩信信息:

    std::shared_ptr<DataShare::DataShareResultSet> DataStorageGtest::SmsSelect(const std::shared_ptr<DataShare::DataShareHelper> &helper)
    {	
        // 资源路径
        Uri uri("datashare:///com.ohos.smsmmsability/sms_mms/sms_mms_info");
        //查询返回的字段
        std::vector<std::string> columns;
        // 发送者号码
        columns.push_back("sender_number");
        // 消息标题
        columns.push_back("msg_title");
        // 消息内容
        columns.push_back("msg_content");
        // 查询谓词
        DataShare::DataSharePredicates predicates;
        // 调用DataShareHelper::Query接口查询
        return helper->Query(uri, predicates, columns);
    }

    插入短彩信信息:

    int SmsInsert(std::shared_ptr<DataShare::DataShareHelper> &helper)
    {
        Uri uri("datashare:///com.ohos.smsmmsability/sms_mms/sms_mms_info");
        DataShare::DataShareValuesBucket value;
        // 接收者号码
        value.Put(SmsMmsInfo::RECEIVER_NUMBER, "138XXXXXXXX");
        // 消息内容
        value.Put(SmsMmsInfo::MSG_CONTENT, "ceshi");
        value.Put(SmsMmsInfo::GROUP_ID, 1);
        return helper->Insert(uri, value);
    }

    删除短彩信信息:

     int SmsDelete(std::shared_ptr<DataShare::DataShareHelper> helper)
     {
         Uri uri("datashare:///com.ohos.smsmmsability/sms_mms/sms_mms_info");
         DataShare::DataSharePredicates predicates;
         // 删除MSG_ID为1的信息
         predicates.EqualTo(SmsMmsInfo::MSG_ID, "1");
         return helper->Delete(uri, predicates);
     }

    更新短彩信信息:

    int SmsUpdate(std::shared_ptr<DataShare::DataShareHelper> helper)
    {
        Uri uri("datashare:///com.ohos.smsmmsability/sms_mms/sms_mms_info");
        DataShare::DataShareValuesBucket values;
        // 信息内容
        values.Put(SmsMmsInfo::MSG_CONTENT, "hi ohos");
        DataShare::DataSharePredicates predicates;
        // 信息Id
        predicates.EqualTo(SmsMmsInfo::MSG_ID, "1");
        return helper->Update(uri, predicates, values);
    }

相关仓

电话服务子系统

telephony_data_storage

telephony_core_service

telephony_sms_mms

telephony_cellular_call

telephony_call_manager

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简介

Provides telephony persistent data storage and DataAbility access interfaces | 负责telephony持久化数据存储,提供DataAbility访问接口 展开 收起
C++ 等 2 种语言
Apache-2.0
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