是否可以使用automapper將IDataReader映射到嵌套的DTO？

Question

我希望能將一個平面數據讀取器映射到一個嵌套的DTO中。運行以下代碼的名稱爲空。我做錯了什麼或者這是不可能的？

class Program 
{ 
    public class Person 
    { 
     public int id { get; set; } 
     public Name name { get; set; } 
    } 

    public class Name 
    { 
     public string first_name { get; set; } 
     public string last_name { get; set; } 
    } 

    static void Main(string[] args) 
    { 
     DataTable table = CreateSampleDataTable(); 
     Mapper.CreateMap<IDataReader, Person>(); 
     Mapper.CreateMap<IDataReader, Name>(); 

     var results = Mapper.Map<IDataReader, IList<Person>>(table.CreateDataReader());   
    } 

    private static DataTable CreateSampleDataTable() 
    { 
     var table = new DataTable(); 

     table.Columns.Add("id", typeof(int)); 
     table.Columns.Add("first_name", typeof(string)); 
     table.Columns.Add("last_name", typeof(string)); 

     table.Rows.Add(100, "Jeff", "Barnes"); 
     table.Rows.Add(101, "George", "Costanza"); 
     table.Rows.Add(102, "Stewie", "Griffin"); 
     table.Rows.Add(103, "Stan", "Marsh"); 
     table.Rows.Add(104, "Eric", "Cartman"); 
     return table; 
    } 
} 

Answer 1

可能與ValueInjecter：

public class DanRyan 
{ 
    [Test] 
    public void Main() 
    { 
     var persons = new List<Person>(); 
     var table = CreateSampleDataTable(); 
     var reader = table.CreateDataReader(); 

     while (reader.Read()) 
     { 
      var p = new Person(); 

      p.InjectFrom<ReaderInjection>(reader); 

      p.name = new Name(); 
      p.name.InjectFrom<ReaderInjection>(reader); 

      persons.Add(p); 
     } 

     persons.Count.IsEqualTo(5); 
     persons[0].id.IsEqualTo(100); 
     persons[0].name.first_name.IsEqualTo("Jeff"); 
     persons[0].name.last_name.IsEqualTo("Barnes"); 
    } 

    public class Person 
    { 
     public int id { get; set; } 
     public Name name { get; set; } 
    } 

    public class Name 
    { 
     public string first_name { get; set; } 
     public string last_name { get; set; } 
    } 

    private static DataTable CreateSampleDataTable() 
    { 
     var table = new DataTable(); 

     table.Columns.Add("id", typeof(int)); 
     table.Columns.Add("first_name", typeof(string)); 
     table.Columns.Add("last_name", typeof(string)); 

     table.Rows.Add(100, "Jeff", "Barnes"); 
     table.Rows.Add(101, "George", "Costanza"); 
     table.Rows.Add(102, "Stewie", "Griffin"); 
     table.Rows.Add(103, "Stan", "Marsh"); 
     table.Rows.Add(104, "Eric", "Cartman"); 
     return table; 
    } 

    public class ReaderInjection : KnownSourceValueInjection<IDataReader> 
    { 
     protected override void Inject(IDataReader source, object target) 
     { 
      for (var i = 0; i < source.FieldCount; i++) 
      { 
       var activeTarget = target.GetProps().GetByName(source.GetName(i), true); 
       if (activeTarget == null) continue; 

       var value = source.GetValue(i); 
       if (value == DBNull.Value) continue; 

       activeTarget.SetValue(target, value); 
      } 
     } 
    } 
}