ExpressionMapper

高性能对象映射库

构造测试类

 public class TestA
    {
        public int Id { get; set; }
        public string Name { get; set; }

        public TestC TestClass { get; set; }

        public IEnumerable<TestC> TestLists { get; set; }
    }

    public class TestB
    {
        public int Id { get; set; }
        public string Name { get; set; }

        public TestD TestClass { get; set; }

        public TestD[] TestLists { get; set; }
    }

    public class TestC
    {
        public int Id { get; set; }
        public string Name { get; set; }

        public TestC SelfClass { get; set; }
    }

    public class TestD
    {
        public int Id { get; set; }
        public string Name { get; set; }

        public TestD SelfClass { get; set; }
    }

调用如下

var mode=new TestA();
TestB b = Mapper<TestA, TestB>.Map(model);

var a = new TestA();
a.ID = 1;
var b = new TestB();
Mapper<TestA, TestB>.Map(a ,b);

Benchmark

BenchmarkDotNet=v0.10.14, OS=Windows 10.0.17741
Intel Core i5-7500 CPU 3.40GHz (Kaby Lake), 1 CPU, 4 logical and 4 physical cores
.NET Core SDK=2.1.400
  [Host]     : .NET Core 2.1.2 (CoreCLR 4.6.26628.05, CoreFX 4.6.26629.01), 64bit RyuJIT
  DefaultJob : .NET Core 2.1.2 (CoreCLR 4.6.26628.05, CoreFX 4.6.26629.01), 64bit RyuJIT

Type	Method	Mean	Error	StdDev	Median
NativeMapperBenchmark	Nomal	17.31 ns	0.3750 ns	0.4605 ns	17.38 ns
ExpressionMapperBenchmark	Nomal	36.03 ns	0.7282 ns	0.8386 ns	36.24 ns
MapsterBenchmark	Nomal	79.94 ns	0.6340 ns	0.5294 ns	79.89 ns
TinyMapperBenchmark	Nomal	95.83 ns	0.4406 ns	0.3906 ns	95.76 ns
AutoMapperBenchmark	Nomal	205.25 ns	2.4091 ns	2.2535 ns	205.73 ns
NativeMapperBenchmark	Complex	33.67 ns	0.5558 ns	0.4927 ns	33.64 ns
ExpressionMapperBenchmark	Complex	62.55 ns	1.2546 ns	2.0613 ns	61.57 ns
MapsterBenchmark	Complex	105.50 ns	1.5860 ns	1.4835 ns	105.29 ns
TinyMapperBenchmark	Complex	129.28 ns	2.3093 ns	2.1601 ns	128.99 ns
AutoMapperBenchmark	Complex	6,640.28 ns	107.8270 ns	95.5859 ns	6,648.63 ns
NativeMapperBenchmark	List	213.80 ns	3.1112 ns	2.9103 ns	213.93 ns
ExpressionMapperBenchmark	List	226.52 ns	4.4336 ns	4.1472 ns	226.23 ns
MapsterBenchmark	List	237.45 ns	3.1549 ns	2.9511 ns	237.59 ns
TinyMapperBenchmark	List	368.29 ns	3.3650 ns	3.1477 ns	368.41 ns
AutoMapperBenchmark	List	12,998.71 ns	240.7413 ns	225.1895 ns	12,981.34 ns
NativeMapperBenchmark	Nest	95.87 ns	1.9204 ns	2.0548 ns	95.86 ns
ExpressionMapperBenchmark	Nest	146.40 ns	2.1350 ns	1.9970 ns	145.73 ns
MapsterBenchmark	Nest	176.49 ns	3.4855 ns	3.4232 ns	176.28 ns
TinyMapperBenchmark	Nest	213.45 ns	1.2942 ns	1.1472 ns	213.45 ns
AutoMapperBenchmark	Nest	25,652.31 ns	495.8452 ns	509.1965 ns	25,614.89 ns