Asp.net 高性能 Sqlite ORM 框架之 sqliteSugar

来源:转载

一、介简

 easyliter框架的升级版本,并且正式命名为SqliteSugar框架,另外Sugar系列还有 MySql和MsSql版本,Oracle版本待开发中(因为客户端太大一直在忧郁当中)

 

用Sqlite 也不址什么高性能了,好用为主。

 

经过一天的努力,Sqlite 版本所有的例子都已经测试通过:

 Sqlite .net4.0+

https://github.com/sunkaixuan/SqliteSugar

 

MySql .NET 4.0+

https://github.com/sunkaixuan/MySqlSugar 

 

MSQL .NET 4.0+下载地址:

https://github.com/sunkaixuan/SqlSugar

 

MSSQL .NET Core版本

https://github.com/sunkaixuan/ASP_NET_CORE_ORM_SqlSugar

 

优点:

1、优越的性能,查询使用  reflection.emit 创建IL语言+委托绑定 然后对该对象进行 cache ,datareader直接赋值给cache对象,高性能拉姆达解析,查询速度达到原生最高性能的写法水准

2、大量语法糖,拉姆达表达示筛选,新颖的多表查询 ,方便的分页等

3、支持事务

4、内置实体类生成函数,无需使用第三方代码生成器

5、简单好用、例子齐全有问必答。

 组成:

sqlSugar是由sqlSugarClient提供统一调用模式 ,sqlSugarClient是由5个部分组成

1、自身函数 

2、实体生成

3、单表查询

4、多表查询

5、基类函数

 

SqliteSugar教程

和MSSQL版本基本一样但是个别例子也会有些细节上的区别

一、查询

1、拉姆达查询(以后会支持多表JOIN)

语法简洁和EF相似,同时兼容 Where("Id>@id",new{id=1}) 这种字符串的写法

 //针对单表或者视图查询

var dt= db.GetDataTable("select * from Student");

//查询所有

var student = db.Queryable<Student>().ToList();

var studentDynamic = db.Queryable<Student>().ToDynamic();

var studentJson = db.Queryable<Student>().ToJson();

//查询单条

var single = db.Queryable<Student>().Single(c => c.id == 1);

//查询单条没有记录返回空对象

var single2 = db.Queryable<Student>().Where(c => c.id == 1).SingleOrDefault();

//查询第一条

var first = db.Queryable<Student>().Where(c => c.id == 1).First();

var first2 = db.Queryable<Student>().Where(c => c.id == 1).FirstOrDefault();

//取10-20条

var page1 = db.Queryable<Student>().Where(c => c.id > 2).OrderBy(it=>it.id).Skip(2).Take(3).ToList();

//上一句的简化写法,同样取10-20条

var page2 = db.Queryable<Student>().Where(c => c.id > 1).OrderBy(it => it.id).ToPageList(2, 3);

//查询条数

var count = db.Queryable<Student>().Where(c => c.id > 10).Count();

//从第2条开始以后取所有

var skip = db.Queryable<Student>().Where(c => c.id > 10).OrderBy(it => it.id).Skip(2).ToList();

//取前2条

var take = db.Queryable<Student>().Where(c => c.id > 10).OrderBy(it => it.id).Take(2).ToList();

// Not like

string conval = "三";

var notLike = db.Queryable<Student>().Where(c => !c.name.Contains(conval.ToString())).ToList();

//Like

conval = "三";

var like = db.Queryable<Student>().Where(c => c.name.Contains(conval)).ToList();

// 可以在拉姆达使用 ToString和 Convert,比EF出色的地方

var convert1 = db.Queryable<Student>().Where(c => c.name == "a".ToString()).ToList();

var convert2 = db.Queryable<Student>().Where(c => c.id == Convert.ToInt32("1")).ToList();//

var convert3 = db.Queryable<Student>().Where(c => DateTime.Now > Convert.ToDateTime("2015-1-1")).ToList();

var convert4 = db.Queryable<Student>().Where(c => DateTime.Now > DateTime.Now).ToList();

//支持字符串Where 让你解决,更复杂的查询

var student12 = db.Queryable<Student>().Where(c => "a" == "a").Where("id>100").ToList();

var student13 = db.Queryable<Student>().Where(c => "a" == "a").Where("id>100 and id in( select 1)").ToList();

//存在记录反回true,则否返回false

bool isAny100 = db.Queryable<Student>().Any(c => c.id == 100);

bool isAny1 = db.Queryable<Student>().Any(c => c.id == 1);

int maxId = db.Queryable<Student>().Max<Student, int>("id");

int minId = db.Queryable<Student>().Where(c => c.id > 0).Min<Student, int>("id");

//order By

var orderList = db.Queryable<Student>().OrderBy("id desc,name asc").ToList();//字符串支持多个排序

//可以多个order by表达示

var order2List = db.Queryable<Student>().OrderBy(it => it.name).OrderBy(it => it.id, OrderByType.desc).ToList(); // order by name as ,order by id desc

//In

var intArray = new[] { "5", "2", "3" };

var intList = intArray.ToList();

var list0 = db.Queryable<Student>().In(it => it.id, 1, 2, 3).ToList();

var list1 = db.Queryable<Student>().In(it => it.id, intArray).ToList();

var list2 = db.Queryable<Student>().In("id", intArray).ToList();

var list3 = db.Queryable<Student>().In(it => it.id, intList).ToList();

var list4 = db.Queryable<Student>().In("id", intList).ToList();

//分组查询

var list7 = db.Queryable<Student>().Where(c => c.id < 20).GroupBy(it => it.sex).Select("sex,count(*) as Count").ToDynamic();

var list8 = db.Queryable<Student>().Where(c => c.id < 20).GroupBy(it => it.sex).GroupBy(it => it.id).Select("id,sex, count(*) as Count").ToDynamic();

List<SexTotal> list9 = db.Queryable<Student>().Where(c => c.id < 20).GroupBy(it => it.sex).Select<Student, SexTotal>("Sex, count(*) as Count").ToList();

List<SexTotal> list10 = db.Queryable<Student>().Where(c => c.id < 20).GroupBy("sex").Select<Student, SexTotal>("Sex, count(*) as Count").ToList();

//SELECT Sex,Count=count(*) FROM Student WHERE 1=1 AND (id < 20) GROUP BY Sex --生成结果

 

2、sqlable 接近SQL的一个路线。

放弃了传统的EF写法,让他更接近SQL,可以取代传统的SQL拼接,让格式更好控。

 using (var db = SugarDao.GetInstance())

{

//---------Sqlable,创建多表查询---------//

//多表查询

List<School> dataList = db.Sqlable()

.From("school", "s")

.Join("student", "st", "st.id", "s.id", JoinType.INNER)

.Join("student", "st2", "st2.id", "st.id", JoinType.LEFT)

.Where("s.id>100 and s.id<@id")

.Where("1=1")//可以多个WHERE

.OrderBy("id")

.SelectToList<School/*新的Model我这里没有所以写的School*/>("st.*", new { id = 1 });

//多表分页

List<School> dataPageList = db.Sqlable()

.From("school", "s")

.Join("student", "st", "st.id", "s.id", JoinType.INNER)

.Join("student", "st2", "st2.id", "st.id", JoinType.LEFT)

.Where("s.id>100 and s.id<100")

.SelectToPageList<School>("st.*", "s.id", 1, 10);

//多表分页WHERE加子查询

List<School> dataPageList2 = db.Sqlable()

.From("school", "s")

.Join("student", "st", "st.id", "s.id", JoinType.INNER)

.Join("student", "st2", "st2.id", "st.id", JoinType.LEFT)

.Where("s.id>100 and s.id<100 and s.id in (select 1 )" /*这里面写子查询都可以*/)

.SelectToPageList<School>("st.*", "s.id", 1, 10);

//--------转成List Dynmaic 或者 Json-----//

//不分页

var list1 = db.Sqlable().From("student", "s").Join("school", "l", "s.sch_id", "l.id and [email protected]", JoinType.INNER).SelectToDynamic("*", new { id = 1 });

var list2 = db.Sqlable().From("student", "s").Join("school", "l", "s.sch_id", "l.id and [email protected]", JoinType.INNER).SelectToJson("*", new { id = 1 });

var list3 = db.Sqlable().From("student", "s").Join("school", "l", "s.sch_id", "l.id and [email protected]", JoinType.INNER).SelectToDataTable("*", new { id = 1 });

//分页

var list4 = db.Sqlable().From("student", "s").Join("school", "l", "s.sch_id", "l.id and [email protected]", JoinType.INNER).SelectToPageDynamic("s.*", "l.id", 1, 10, new { id = 1 });

var list5 = db.Sqlable().From("student", "s").Join("school", "l", "s.sch_id", "l.id and [email protected]", JoinType.INNER).SelectToPageTable("s.*", "l.id", 1, 10, new { id = 1 });

var list6 = db.Sqlable().From("student", "s").Join("school", "l", "s.sch_id", "l.id and [email protected]", JoinType.INNER).SelectToPageDynamic("s.*", "l.id", 1, 10, new { id = 1 });

//--------拼接-----//

Sqlable sable = db.Sqlable().From<Student>("s").Join<School>("l", "s.sch_id", "l.id", JoinType.INNER);

string name = "a";

int id = 1;

if (!string.IsNullOrEmpty(name))

{

sable = sable.Where("[email protected]");

}

if (!string.IsNullOrEmpty(name))

{

sable = sable.Where("[email protected] or s.id=100");

}

var pars = new { id = id, name = name };

int pageCount = sable.Count(pars);

var list7 = sable.SelectToPageList<Student>("s.*","l.id desc",1,20, pars);

}

 

3、对原生SQL查询

 using (var db = SugarDao.GetInstance())

{

//转成list

List<Student> list1 = db.SqlQuery<Student>("select * from Student");

//转成list带参

List<Student> list2 = db.SqlQuery<Student>("select * from Student where [email protected]", new { id = 1 });

//转成dynamic

dynamic list3 = db.SqlQueryDynamic("select * from student");

//转成json

string list4 = db.SqlQueryJson("select * from student");

//返回int

var list5 = db.SqlQuery<int>("select id from Student limit 0,1").First();

//反回键值

Dictionary<string, string> list6 = db.SqlQuery<KeyValuePair<string, string>>("select id,name from Student").ToDictionary(it => it.Key, it => it.Value);

//反回List<string[]>

var list7 = db.SqlQuery<string[]>("select name from Student").First();

//存储过程

//var spResult = db.SqlQuery<School>("exec sp_school @p1,@p2", new { p1=1,p2=2 });

}

 4、容器的转换

 using (SqlSugarClient db = SugarDao.GetInstance())

{

var list2= db.Queryable<Student>().Where(c => c.id < 10).Select(c => new classNew { newid = c.id, newname = c.name, xx_name = c.name }).ToList();//不支持匿名类转换,也不建议使用

var list3 = db.Queryable<Student>().Where(c => c.id < 10).Select(c => new { newid = c.id, newname = c.name, xx_name = c.name }).ToDynamic();//匿名类转换

}

View Code

 

二、更新

可以指定列更新,也可对实体整个更新,也可以排除不更新字段非常的方便好用

 int id = 1;

using (var db = SugarDao.GetInstance())

{

//指定列更新

db.Update<School>(new { name = "蓝翔2" }, it => it.id == id);

db.Update<School, int>(new { name = "蓝翔2" }, 1, 3, 12);

db.Update<School, string>(new { name = "蓝翔2" }, new string[] { "1", "2" });

//整个实体更新

db.Update(new School { id = id, name = "蓝翔2" });

db.Update<School>(new School { id = id, name = "蓝翔2" }, it => it.id == id);

//设置不更新列

db.DisableUpdateColumns = new string[] { "CreateTime" };//设置CreateTime不更新

TestUpdateColumns updObj = new TestUpdateColumns()

{

VGUID = Guid.Parse("6DF396EB-D1C8-48A5-8BE1-D58D685646A7"),

Name = "xx",

Name2 = "xx2",

IdentityField = 0,

CreateTime = null

};

//CreateTime将不会被更新

db.Update(updObj);

//以前实现这种更新需要用指定列的方式实现,现在就简单多了。

}

更新

 

三、删除

 using (var db = SugarDao.GetInstance())

{

//真删除

db.Delete<Student, int>(10);//注意主键必需为实体类的第一个属性

db.Delete<School>(it => it.id > 100);

db.Delete<School, string>(new string[] { "100", "101", "102" });

//假删除

//db.FalseDelete<school>("is_del", 100);

//等同于 update school set is_del=0 where id in(100)

//db.FalseDelete<school>("is_del", it=>it.id==100);

}

删除

 

四、插入

Student s = new Student()

{

name = "张" + new Random().Next(1, int.MaxValue)

};

db.Insert(s); //插入一条记录 (有主键也好,没主键也好,有自增列也好都可以插进去)

List<Student> list = new List<Student>()

{

new Student()

{

name="张"+new Random().Next(1,int.MaxValue)

},

new Student()

{

name="张"+new Random().Next(1,int.MaxValue)

}

};

db.InsertRange(list); //批量插入

插入

 

五、枚举支持

 using (SqlSugarClient db = SugarDao.GetInstance())

{

var stuList= db.Queryable<Student>().ToList();

db.Insert<Student>(new Student() { sch_id = SchoolEnum.蓝翔2 });

db.Update<Student>(new Student() { sch_id=SchoolEnum.蓝翔2 , id=1} );

var stuList2 = db.Queryable<Student>().Where(it=>it.sch_id==SchoolEnum.蓝翔1).ToList();

}

枚举

 

六、实体生成

 using (var db = SugarDao.GetInstance())

{

//根据当前数据库生成所有表的实体类文件 (参数:SqlSugarClient ,文件目录,命名空间)

db.ClassGenerating.CreateClassFiles(db,"e:\\mysqlModel","Models");

//根据表名生成实体类文件

//db.ClassGenerating.CreateClassFilesByTableNames(db, Server.MapPath("~/Models"), "Models" , "student","school");

//根据表名生成class字符串

var str = db.ClassGenerating.TableNameToClass(db, "Student");

//根据SQL语句生成class字符串

var str2 = db.ClassGenerating.SqlToClass(db, "select * from Student", "student");

}

实体生成

除了上面代码还有T4生成看DEMO不懂可以随时问我

 

七、全局过滤器

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Web.UI;

using System.Web.UI.WebControls;

using MySqlSugar;

using Models;

namespace WebTest.Demo

{

/// <summary>

/// 过滤器

/// </summary>

public partial class Filter : System.Web.UI.Page

{

protected void Page_Load(object sender, EventArgs e)

{

using (SqlSugarClient db = SugarDaoFilter.GetInstance())//开启数据库连接

{

//设置走哪个过滤器

db.CurrentFilterKey = "role";

//queryable

var list = db.Queryable<Student>().ToList(); //通过全局过滤器对需要权限验证的数据进行过滤

//相当于db.Queryable<Student>().Where("[email protected]",new{id=1})

//sqlable

var list2 = db.Sqlable().From<Student>("s").SelectToList<Student>("*");

//同上

//sqlQuery

var list3 = db.SqlQuery<Student>("select * from Student where 1=1");

//同上

}

}

}

/// <summary>

/// 扩展SqlSugarClient

/// </summary>

public class SugarDaoFilter

{

//禁止实例化

private SugarDaoFilter()

{

}

/// <summary>

/// 页面所需要的过滤函数

/// </summary>

private static Dictionary<string, Func<KeyValueObj>> _filterParas = new Dictionary<string, Func<KeyValueObj>>()

{

{ "role",()=>{

return new KeyValueObj(){ Key=" [email protected]" , Value=new{ id=1}};

}

},

{ "org",()=>{

return new KeyValueObj(){ Key=" [email protected]" , Value=new{ orgId=1}};

}

},

};

public static SqlSugarClient GetInstance()

{

string connection = System.Configuration.ConfigurationManager.ConnectionStrings[@"sqlConn"].ToString(); //这里可以动态根据cookies或session实现多库切换

var reval = new SqlSugarClient(connection);

reval.SetFilterFilterParas(_filterParas);

return reval;

}

}

}

过滤器

 

八、别名表

 using (SqlSugarClient db = SugarDao.GetInstance())

{

//-----单个-------//

var list = db.Queryable<V_Student>("Student").ToList();//查询的是 select * from student 而我的实体名称为V_Student

//-----全局多个设置-------//

//设置 Mapping Table 如果没这方面需求可以传NULL

List<KeyValue> mappingTableList = new List<KeyValue>(){

new KeyValue(){ Key="FormAttr", Value="Flow_FormAttr"},

new KeyValue(){ Key="Student3", Value="Student"}

};

db.SetMappingTables(mappingTableList);

}

别名表

 

九、事务

using (SqlSugarClient db = SugarDao.GetInstance())//开启数据库连接

{

db.IsNoLock = true;//启用无锁查询

db.CommandTimeOut = 30000;//设置超时时间

try

{

db.BeginTran();//开启事务

//db.BeginTran(IsolationLevel.ReadCommitted);+3重载可以设置事世隔离级别

db.CommitTran();//提交事务

}

catch (Exception)

{

db.RollbackTran();//回滚事务

throw;

}

}

 

十、保留了ADO功能

 using (SqlSugarClient db = SugarDao.GetInstance())//开启数据库连接

{

var r1= db.GetDataTable("select * from student");

var r2= db.GetSingle<Student>("select * from student limit 0,1");

var r3 = db.GetScalar("select count(1) from student");

var r4 = db.GetReader("select count(1) from student");

r4.Dispose();

var r5 = db.GetString("select name from student limit 0,1");

var r6 = db.ExecuteCommand("select 1");

}

View Code

 

 Sqlite版已经发布到Nuget,方便大家下载

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