EmitMapper 和TinyMapper 两者简单对比(若转载请注明)

前言：

我们在很多项目场景中使用对象映射工具，那么使用最多的OOM对象工具也就那几个。今天所说的EmitMapper 和TinyMapper 两者的性能都是很高的，相比autoMapper 速度不知道快了多少倍，因为我平时使用的最多EmitMapper，所在业余时间做了一下测试两者对比。

测试数据：10万条和1000万条，分手动，TinyMapper,EmitMapper分别进行测试。22次用例结果：平均值：(注autoMapper不参与，因为笔者认为性能暂时无法和以上相比)

SELECT   TOP (200) typename, AVG(esTime) AS estimed
FROM      emitTinyMapperData 
GROUP BY typename
ORDER BY 2

结果显示：

手动生成 458
TinyMapper    535
EmitMapper    618

数据加大到：1000万条：

手动生成    458
TinyMapper    525
EmitMapper    593

TestModel数据对象（为了方便看就写在一起了）：

 1 namespace YGOP.PayCenter.MapperTest
 2 {
 3     /// <summary>
 4     /// 测试对象
 5     /// </summary>
 6     public class TestModel
 7     {
 8         public string modelName { get; set; }
 9     }
10 
11     /// <summary>
12     /// 测试对象A
13     /// </summary>
14     public class TestModelA: TestModel
15     {
16         public string modelNameA { get; set; }
17         public int age { get; set; }
18         public int sex { get; set; }
19         /// <summary>
20         /// 注意此处
21         /// </summary>
22         public OrderItem orderItem { get; set; }
23     }
24 
25     public class TestModelB : TestModel
26     {
27         public string modelNameB { get; set; }
28 
29         public long sex { get; set; }
30         public int ageB { get; set; }
31         /// <summary>
32         /// 注意此处
33         /// </summary>
34         public string  gender { get; set; }
35         public string bak { get; set; }
36         /// <summary>
37         /// 注意此处
38         /// </summary>
39         public OrderItem2 orderItem2 { get; set; }
40 
41     }
42     /// <summary>
43     /// 订单子对象测试
44     /// </summary>
45     public class OrderItem
46     {
47         public  string orderId { get;set;}
48         public  string subId { get; set; }
49 
50         public int qty { get; set; }
51         public  double price { get; set; }
52         public string bak { get; set; }
53 
54         public string qq { get; set; }
55         public  bool isMem { get; set; }
56 
57     }
58 
59     /// <summary>
60     /// 订单子对象测试
61     /// </summary>
62     public class OrderItem2
63     {
64         public string orderId { get; set; }
65         public string itemId { get; set; }
66 
67         public string qq { get; set; }
68         public int amount { get; set; }
69         public decimal unitprice { get; set; }
70 
71         public bool isMem { get; set; }
72 
73     }

View Code

测试用例代码：

0.手动生成对象

 1    /// <summary>
 2         /// 手工生成对象
 3         /// </summary>
 4         /// <param name="max"></param>
 5         /// <returns></returns>
 6         private List<TestModelA> HanderCustomObject(int max= 100000)
 7         { 
 8             List<TestModelA> modelAlist = new List<TestModelA>();
 9         
10 
11             for (int i = 0; i < max; i++)
12             {
13                 modelAlist.Add(new TestModelA()
14                 {
15                     age = i + 10,
16                     modelNameA = "测试a" + i,
17                     modelName = "测试a" + i,
18                     sex = i,
19                     orderItem = new OrderItem()
20                     {
21                         bak = "132" + i,
22                         orderId = "orderId" + DateTime.Now.ToString() + i.ToString(),
23                         price = i + new Random().Next(20, 100),
24                         qty = i,
25                         qq = "252445578" + i,
26                         subId = "subId" + i
27                         ,
28                         isMem = i % 2 == 0
29                     }
30                 });
31             }
32 
33             return modelAlist;
34 
35         }

View Code

1.给 TinyMapper 做对象的关系映射

 1         /// <summary>
 2         /// 给 TinyMapper 做对象的关系映射
 3         /// </summary>
 4         private void InitTinyMapperCustomMapper()
 5         {
 6 
 7             TinyMapper.Bind<OrderItem, OrderItem2>(mapconfig2Order =>
 8             {
 9                 mapconfig2Order.Bind(a => a.qty, b => b.amount);
10                 mapconfig2Order.Bind(a => a.price, b => b.unitprice);
11                 mapconfig2Order.Bind(a => a.subId, b => b.itemId);
12                 mapconfig2Order.Bind(a => a.bak, b => b.amount);
13             });
14 
15             TinyMapper.Bind<TestModelA, TestModelB>(mapConfig =>
16             {
17                 mapConfig.Ignore(src => src.modelName);
18                 mapConfig.Bind(a => a.age, b => b.ageB);
19                 mapConfig.Bind(a => a.sex, b => b.gender);
20                 mapConfig.Bind(a => a.modelNameA, b => b.modelNameB);
21                 mapConfig.Bind(a => a.orderItem, b => b.orderItem2);
22             });
23 
24 
25 
26         }

View Code

2.给EmitMapper 做对象关系的映射

 1        /// <summary>
 2         /// 给EmitMapper 做对象关系的映射
 3         /// </summary>
 4         /// <returns></returns>
 5         private IMappingConfigurator InitEmitCustomMapper2()
 6         {
 7             IMappingConfigurator conf = new DefaultMapConfig().ConvertUsing<TestModelA, TestModelB>(
 8            v => new TestModelB()
 9            {
10                ageB = v.age,
11                gender = (v.sex % 2 == 0 ? "男" : "女"),
12                modelNameB = v.modelNameA,
13                orderItem2 = new OrderItem2()
14                {
15                    amount = v.orderItem.qty,
16                    itemId = v.orderItem.subId,
17                    unitprice = Convert.ToDecimal(v.orderItem.price),
18                    qq = v.orderItem.qq,
19                    orderId = v.orderItem.orderId,
20                    isMem = v.orderItem.isMem
21                }
22 
23            });
24 
25             return conf;
26         }

View Code

3.最终的调用

 1       private void button1_Click(object sender, EventArgs e)
 2         {
 3             Stopwatch stopwatch = new Stopwatch();
 4             stopwatch.Start();
 5 
 6             int max = 100000;
 7             var modelAlist = HanderCustomObject();
 8             stopwatch.Stop();
 9             string ok1 = string.Format(max + "次，手动生成 所用时间 :{0} 毫秒", stopwatch.ElapsedMilliseconds);
10             textBox1.AppendText(ok1 + "\r\n");
11             stopwatch.Start();
12             InitTinyMapperCustomMapper();
13             var ss = TinyMapperHelper.Instance.Convert<List<TestModelA>, List<TestModelB>>(modelAlist);
14             stopwatch.Stop();
15             string ok = string.Format(max + "次，TinyMapper 所用时间 :{0} 毫秒", stopwatch.ElapsedMilliseconds);
16             textBox1.AppendText(ok + "\r\n");
17 
18             //Thread.Sleep(1000);
19             stopwatch.Start();
20             var conf= InitEmitCustomMapper2();
21             var ccc = EmitMapperHelper.Instance.Convert<List<TestModelA>, List<TestModelB>>(modelAlist, conf);
22 
23             stopwatch.Stop();
24             string ok2 = string.Format(max + "次，EmitMapper 所用时间 :{0} 毫秒", stopwatch.ElapsedMilliseconds);
25             textBox1.AppendText(ok2 + "\r\n");
26 
27             return;
28         }

View Code

使用22次后，结果

 1 方式/10万次采样    耗时/毫秒
 2 手动生成    438
 3 TinyMapper    549
 4 EmitMapper    681
 5 手动生成    428
 6 TinyMapper    537
 7 EmitMapper    709
 8 手动生成    473
 9 TinyMapper    534
10 EmitMapper    615
11 手动生成    463
12 TinyMapper    530
13 EmitMapper    617
14 手动生成    486
15 TinyMapper    550
16 EmitMapper    645
17 手动生成    465
18 TinyMapper    551
19 EmitMapper    654
20 手动生成    450
21 TinyMapper    541
22 EmitMapper    641
23 手动生成    442
24 TinyMapper    551
25 EmitMapper    674
26 手动生成    477
27 TinyMapper    543
28 EmitMapper    606
29 手动生成    458
30 TinyMapper    517
31 EmitMapper    584
32 手动生成    445
33 TinyMapper    512
34 EmitMapper    555
35 手动生成    456
36 TinyMapper    521
37 EmitMapper    580
38 手动生成    475
39 TinyMapper    550
40 EmitMapper    613
41 手动生成    523
42 TinyMapper    603
43 EmitMapper    673
44 手动生成    440
45 TinyMapper    500
46 EmitMapper    568
47 手动生成    457
48 TinyMapper    532
49 EmitMapper    607
50 手动生成    410
51 TinyMapper    472
52 EmitMapper    559
53 手动生成    477
54 TinyMapper    536
55 EmitMapper    596
56 手动生成    449
57 TinyMapper    521
58 EmitMapper    595
59 手动生成    488
60 TinyMapper    554
61 EmitMapper    640
62 手动生成    463
63 TinyMapper    520
64 EmitMapper    587
65 手动生成    432
66 TinyMapper    560
67 EmitMapper    605