SmartSql 快速使用指南

摘要： SmartSql 快速使用指南(https://github.com/Ahoo-Wang/SmartSql ) ISmartSqlMapper 常用(部分)介面概述 函式 說明 ...

SmartSql 快速使用指南(ofollow,noindex" target="_blank">https://github.com/Ahoo-Wang/SmartSql )

ISmartSqlMapper 常用(部分)介面概述

函式	說明
Execute	IDbCommand.ExecuteNonQuery，執行返回受影響行數
ExecuteScalar	IDbCommand.ExecuteScalar,執行並返回查詢返回的ReultSet中第一行的第一列
Query	執行返回實體列表
QuerySingle	執行返回單個實體
GetDataTable	執行返回DataTable
GetDataSet	執行返回DataSet
BeginTransaction	開啟事務
CommitTransaction	提交事務
RollbackTransaction	回滾事務

新增

Statement

<Statement Id="Insert">
INSERT INTO T_User
(UserName
,Password
,Status
,LastLoginTime
,CreationTime)
VALUES
(?UserName
,?Password
,?Status
,?LastLoginTime
,?CreationTime)
;Select Last_Insert_Id();
</Statement>

返回主鍵

ISmartSqlMapper SqlMapper = MapperContainer.Instance.GetSqlMapper();
long userId = _smartSqlMapper.ExecuteScalar<long>(new RequestContext
{
Scope = "User",
SqlId = "Insert",
Request = new User
{
UserName = request.UserName,
Pwd = request.Pwd,
Status = Entitiy.UserStatus.Ok,
CreationTime = DateTime.Now,
}
});

新增返回受影響行數

SqlMapper.Execute(new RequestContext
{
Scope = "User",
SqlId = "Insert",
Request = new User
{
UserName = request.UserName,
Pwd = request.Pwd,
Status = Entitiy.UserStatus.Ok,
CreationTime = DateTime.Now,
}
});

刪除

<Statement Id="Delete">
Delete FROMT_User
Where Id=?Id
</Statement>

SqlMapper.Execute(new RequestContext
{
Scope = "User",
SqlId = "Delete",
Request = new { Id = 3 }
});

更新

Statement.Update

<Statement Id="Update">
UPDATE T_User
<Set>
<IsProperty Prepend="," Property="UserName">
UserName = ?UserName
</IsProperty>
<IsProperty Prepend="," Property="Password">
Password = ?Password
</IsProperty>
<IsProperty Prepend="," Property="Status">
Status = ?Status
</IsProperty>
<IsProperty Prepend="," Property="LastLoginTime">
LastLoginTime = ?LastLoginTime
</IsProperty>
<IsProperty Prepend="," Property="CreationTime">
CreationTime = ?CreationTime
</IsProperty>
</Set>
Where Id=?Id
</Statement>

全量更新

SqlMapper.Execute(new RequestContext
{
Scope = "User",
SqlId = "Update",
Request = new User
{
Id=1,
UserName = request.UserName,
Pwd = request.Pwd,
Status = Entitiy.UserStatus.Ok,
CreationTime = DateTime.Now,
}
});

區域性更新

SqlMapper.Execute(new RequestContext
{
Scope = "User",
SqlId = "Update",
Request = new { Id=1 , Pwd = "SmartSql" }
});

查詢 返回List

<Statement Id="Query">
SELECT T.* From T_User T
<Where>
<IsNotEmpty Prepend="And" Property="EqUserName">
T.UserName=$EqUserName
</IsNotEmpty>
<IsNotEmpty Prepend="And" Property="UserName">
T.UserName Like Concat('%',$UserName,'%')
</IsNotEmpty>
</Where>
<Switch Prepend="Order By" Property="OrderBy">
<Default>
T.Id Desc
</Default>
</Switch>
<IsNotEmpty Prepend="Limit" Property="Taken">?Taken</IsNotEmpty>
</Statement>

var list = SqlMapper.Query<User>(new RequestContext
{
Scope = "User",
SqlId = "Query",
Request = new
{
Taken = 10
}
});

查詢 返回單個實體

<Statement Id="GetEntity">
Select T.* From T_User T
<Where>
<IsNotEmpty Prepend="And" Property="Id">
T.Id=?Id
</IsNotEmpty>
</Where>
Limit 1
</Statement>

var user = SqlMapper.QuerySingle<User>(new RequestContext
{
Scope = "User",
SqlId = "GetEntity",
Request = new { Id = 1 }
});

事務

try
{
SqlMapper.BeginTransaction();
//BizCode();
SqlMapper.CommitTransaction();
}
catch (Exception ex)
{
SqlMapper.RollbackTransaction();
throw ex;
}

儲存過程

DbParameterCollection dbParameterCollection = new DbParameterCollection();
dbParameterCollection.Add(new DbParameter
{
Name = "Total",
DbType = System.Data.DbType.Int32,
Direction = System.Data.ParameterDirection.Output
});
RequestContext context = new RequestContext
{
CommandType = System.Data.CommandType.StoredProcedure,
RealSql = "SP_QueryByPage",
Request = dbParameterCollection
};
var list = SqlMapper.Query<User>(context);
var total = dbParameterCollection.GetValue<int>("Total");