高效能ORM 框架之 MySqlSugar

孫凱旋發表於2016-08-07

mysql 3.X API地址:  http://www.cnblogs.com/sunkaixuan/p/5987308.html

 

MySqlSugar 1.5 API

一、介簡

SqlSugar ORM框架一直在升級當中,昨天將EMIT架構進行了重構,讓型別轉換更加智慧,EMIT轉換後的效能和原生ADO同水準(以前只是接近),為了提高效能、穩定、有問必答、有需求必改、堅持更新。例如資料庫型別為BIT我們在程式裡面可以使用 INT接收也可以用BOOL接收,不影響一絲效能,這些都是SQLSUGAR以前沒有的功能。

 

 

經過一天的努力,MySql版本所有的例子都已經測試通過:

 

MySql .NET 4.0+

https://github.com/sunkaixuan/MySqlSugar 

 

MySql .NET CORE

下週更新

 

MSQL .NET 4.0+下載地址:

https://github.com/sunkaixuan/SqlSugar

 

MSSQL .NET Core版本

https://github.com/sunkaixuan/ASP_NET_CORE_ORM_SqlSugar

 

優點:

1、優越的效能,查詢使用  reflection.emit 建立IL語言+委託繫結 然後對該物件進行 cache ,datareader直接賦值給cache物件,高效能拉姆達解析,查詢速度達到原生最高效能的寫法水準

2、大量語法糖,拉姆達表達示篩選,新穎的多表查詢 ,方便的分頁等

3、支援事務

4、內建實體類生成函式,無需使用第三方程式碼生成器

5、簡單好用、例子齊全有問必答。

 組成:

sqlSugar是由sqlSugarClient提供統一呼叫模式 ,sqlSugarClient是由5個部分組成

1、自身函式 

2、實體生成

3、單表查詢

4、多表查詢

5、基類函式

 

MySql教程

和MSSQL版本基本一樣但是個別例子也會有些細節上的區別

一、查詢

1、拉姆達查詢(以後會支援多表JOIN)

語法簡潔和EF相似,但有區別的SqlSugar更適合字串操作,例如Where("Id>@id",new{id=1})

   //針對單表或者檢視查詢
               var dt=  db.GetDataTable("select * from Student");
                //查詢所有
                var student = db.Queryable<Student>().ToList();
                var studentDynamic = db.Queryable<Student>().ToDynamic();
                var studentJson = db.Queryable<Student>().ToJson();

                //查詢單條
                var single = db.Queryable<Student>().Single(c => c.id == 1);
                //查詢單條沒有記錄返回空物件
                var single2 = db.Queryable<Student>().Where(c => c.id == 1).SingleOrDefault();

                //查詢第一條
                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條
                var page1 = db.Queryable<Student>().Where(c => c.id > 2).OrderBy(it=>it.id).Skip(2).Take(3).ToList();

                //上一句的簡化寫法,同樣取10-20條
                var page2 = db.Queryable<Student>().Where(c => c.id > 1).OrderBy(it => it.id).ToPageList(2, 3);

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

                //從第2條開始以後取所有
                var skip = db.Queryable<Student>().Where(c => c.id > 10).OrderBy(it => it.id).Skip(2).ToList();

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

                // Not like 
                string conval = "";
                var notLike = db.Queryable<Student>().Where(c => !c.name.Contains(conval.ToString())).ToList();
                //Like
                conval = "";
                var like = db.Queryable<Student>().Where(c => c.name.Contains(conval)).ToList();

                // 可以在拉姆達使用 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();

                //支援字串Where 讓你解決,更復雜的查詢
                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();


                //存在記錄反回true,則否返回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();//字串支援多個排序
                //可以多個order by表達示
                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();

                //分組查詢
                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 --生成結果

 

2、sqlable 接近SQL的一個路線。

放棄了傳統的EF寫法,讓他更接近SQL,可以取代傳統的SQL拼接,讓格式更好控。

 using (var db = SugarDao.GetInstance())
            {
                //---------Sqlable,建立多表查詢---------//

                //多表查詢
                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")//可以多個WHERE
                   .OrderBy("id")
                   .SelectToList<School/*新的Model我這裡沒有所以寫的School*/>("st.*", new { id = 1 });

                //多表分頁
                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);

                //多表分頁WHERE加子查詢
                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 )" /*這裡面寫子查詢都可以*/)
                    .SelectToPageList<School>("st.*", "s.id", 1, 10);



                //--------轉成List Dynmaic 或者 Json-----//

                //不分頁
                var list1 = db.Sqlable().From("student", "s").Join("school", "l", "s.sch_id", "l.id and l.id=@id", JoinType.INNER).SelectToDynamic("*", new { id = 1 });
                var list2 = db.Sqlable().From("student", "s").Join("school", "l", "s.sch_id", "l.id and l.id=@id", JoinType.INNER).SelectToJson("*", new { id = 1 });
                var list3 = db.Sqlable().From("student", "s").Join("school", "l", "s.sch_id", "l.id and l.id=@id", JoinType.INNER).SelectToDataTable("*", new { id = 1 });

                //分頁
                var list4 = db.Sqlable().From("student", "s").Join("school", "l", "s.sch_id", "l.id and l.id=@id", 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 l.id=@id", 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 l.id=@id", 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("s.name=@name");
                }
                if (!string.IsNullOrEmpty(name))
                {
                    sable = sable.Where("s.id=@id 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、對原生SQL查詢

 using (var db = SugarDao.GetInstance())
            {
                //轉成list
                List<Student> list1 = db.SqlQuery<Student>("select * from Student");
                //轉成list帶參
                List<Student> list2 = db.SqlQuery<Student>("select * from Student where id=@id", new { id = 1 });
                //轉成dynamic
                dynamic list3 = db.SqlQueryDynamic("select * from student");
                //轉成json
                string list4 = db.SqlQueryJson("select * from student");
                //返回int
                var list5 = db.SqlQuery<int>("select  id from Student limit 0,1").First();
                //反回鍵值
                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();
                //儲存過程
                //var spResult = db.SqlQuery<School>("exec sp_school @p1,@p2", new { p1=1,p2=2 });
            }

 4、容器的轉換

   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();//不支援匿名類轉換,也不建議使用

                var list3 = db.Queryable<Student>().Where(c => c.id < 10).Select(c => new   { newid = c.id, newname = c.name, xx_name = c.name }).ToDynamic();//匿名類轉換
            }
View Code

 

二、更新

可以指定列更新,也可對實體整個更新,也可以排除不更新欄位非常的方便好用

 int id = 1;
            using (var db = SugarDao.GetInstance())
            {
                //指定列更新
                db.Update<School>(new { name = "藍翔2" }, it => it.id == id);
                db.Update<School, int>(new { name = "藍翔2" }, 1, 3, 12);
                db.Update<School, string>(new { name = "藍翔2" }, new string[] { "1", "2" });

                //整個實體更新
                db.Update(new School { id = id, name = "藍翔2" });
                db.Update<School>(new School { id = id, name = "藍翔2" }, it => it.id == id);


                //設定不更新列
                db.DisableUpdateColumns = new string[] { "CreateTime" };//設定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將不會被更新
                db.Update(updObj);
                //以前實現這種更新需要用指定列的方式實現,現在就簡單多了。
               
            }
更新

 

三、刪除

 using (var db = SugarDao.GetInstance())
            {
                //真刪除
                db.Delete<Student, int>(10);//注意主鍵必需為實體類的第一個屬性
                db.Delete<School>(it => it.id > 100);
                db.Delete<School, string>(new string[] { "100", "101", "102" });

                //假刪除
                //db.FalseDelete<school>("is_del", 100);
                //等同於 update school set is_del=0 where id in(100)
                //db.FalseDelete<school>("is_del", it=>it.id==100);
            }
刪除

 

四、插入

Student s = new Student()
                {
                    name = "" + new Random().Next(1, int.MaxValue)
                };

                db.Insert(s); //插入一條記錄 (有主鍵也好,沒主鍵也好,有自增列也好都可以插進去)


                List<Student> list = new List<Student>()
                {
                     new Student()
                {
                     name=""+new Random().Next(1,int.MaxValue)
                },
                 new Student()
                {
                     name=""+new Random().Next(1,int.MaxValue)
                }
                };

                db.InsertRange(list); //批量插入
插入

 

五、列舉支援

 using (SqlSugarClient db = SugarDao.GetInstance())
            {
                var stuList= db.Queryable<Student>().ToList();
                db.Insert<Student>(new Student() { sch_id = SchoolEnum.藍翔2 });
                db.Update<Student>(new Student() {  sch_id=SchoolEnum.藍翔2 , id=1} );
                var stuList2 = db.Queryable<Student>().Where(it=>it.sch_id==SchoolEnum.藍翔1).ToList();
            }
列舉

 

六、實體生成

 using (var db = SugarDao.GetInstance())
            {

                //根據當前資料庫生成所有表的實體類檔案 (引數:SqlSugarClient ,檔案目錄,名稱空間)
                db.ClassGenerating.CreateClassFiles(db,"e:\\mysqlModel","Models");
                //根據表名生成實體類檔案
                //db.ClassGenerating.CreateClassFilesByTableNames(db, Server.MapPath("~/Models"), "Models" , "student","school");

                //根據表名生成class字串
                var str = db.ClassGenerating.TableNameToClass(db, "Student");

                //根據SQL語句生成class字串
                var str2 = db.ClassGenerating.SqlToClass(db, "select   * from Student", "student");
            }
實體生成

除了上面程式碼還有T4生成看DEMO不懂可以隨時問我

 

七、全域性過濾器

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>
    /// 過濾器
    /// </summary>
    public partial class Filter : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            using (SqlSugarClient db = SugarDaoFilter.GetInstance())//開啟資料庫連線
            {
                //設定走哪個過濾器
                db.CurrentFilterKey = "role";

                //queryable
                var list = db.Queryable<Student>().ToList(); //通過全域性過濾器對需要許可權驗證的資料進行過濾
                //相當於db.Queryable<Student>().Where("id=@id",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>
    /// 擴充套件SqlSugarClient
    /// </summary>
    public class SugarDaoFilter
    {
        //禁止例項化
        private SugarDaoFilter()
        {

        }
        /// <summary>
        /// 頁面所需要的過濾函式
        /// </summary>
        private static Dictionary<string, Func<KeyValueObj>> _filterParas = new Dictionary<string, Func<KeyValueObj>>()
        {
          { "role",()=>{
                    return new KeyValueObj(){ Key=" id=@id" , Value=new{ id=1}};
               }
          },
          { "org",()=>{ 
                    return new KeyValueObj(){ Key=" orgId=@orgId" , Value=new{ orgId=1}};
              }
          },
        };
        public static SqlSugarClient GetInstance()
        {
            string connection = System.Configuration.ConfigurationManager.ConnectionStrings[@"sqlConn"].ToString(); //這裡可以動態根據cookies或session實現多庫切換
            var reval = new SqlSugarClient(connection);
            reval.SetFilterFilterParas(_filterParas);
            return reval;
        }
    }
}
過濾器

 

八、別名表

 using (SqlSugarClient db = SugarDao.GetInstance())
            {

                //-----單個-------//
                var list = db.Queryable<V_Student>("Student").ToList();//查詢的是 select * from student 而我的實體名稱為V_Student




                //-----全域性多個設定-------//

                //設定 Mapping Table 如果沒這方面需求可以傳NULL
                List<KeyValue> mappingTableList = new List<KeyValue>(){
                new KeyValue(){ Key="FormAttr", Value="Flow_FormAttr"},
                new KeyValue(){ Key="Student3", Value="Student"}
                };
                db.SetMappingTables(mappingTableList);
            }
別名表

 

九、事務

using (SqlSugarClient db = SugarDao.GetInstance())//開啟資料庫連線
            {
                db.IsNoLock = true;//啟用無鎖查詢
                db.CommandTimeOut = 30000;//設定超時時間
                try
                {
                    db.BeginTran();//開啟事務
                    //db.BeginTran(IsolationLevel.ReadCommitted);+3過載可以設定事世隔離級別

                    db.CommitTran();//提交事務
                }
                catch (Exception)
                {
                    db.RollbackTran();//回滾事務
                    throw;
                }
            }

 

十、保留了ADO功能

 using (SqlSugarClient db = SugarDao.GetInstance())//開啟資料庫連線
            {
               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

 

 MySql版已經發布到Nuget,方便大家下載

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