mapping - Mapster - 从基类映射后代类
问题描述
课程:
public class Department
{
public string Name { get; set; }
}
public class DepartmentA : Department
{
public string NameA { get; set; }
}
public class Employee
{
public string Name { get; set; }
public int Salary { get; set; }
public string Address { get; set; }
public Department Department { get; set; }
}
public class EmployeeDTO
{
public string Name { get; set; }
public int Salary { get; set; }
public string Address { get; set; }
public Department Department { get; set; }
}
代码:
DepartmentA departmentA = new DepartmentA { NameA = "depA", Name = "dep" };
Employee emp = new Employee
{
Name = "James",
Salary = 20000,
Address = "London",
Department = departmentA
};
//Mapster
var empDTO = emp.Adapt<EmployeeDTO>();
//AutoMapper
//var config = new MapperConfiguration(cfg => cfg.CreateMap<Employee, EmployeeDTO>());
//var mapper = config.CreateMapper();
//EmployeeDTO empDTO = mapper.Map<EmployeeDTO>(emp);
Console.WriteLine("SourceType:" + emp.Department.GetType().Name);
Console.WriteLine("DestType:" + empDTO.Department.GetType().Name);
如果您运行代码,您将看到 SourceType 和 DestType 不一样。我如何实现它们相同?Mapster 将部门映射为 Department 类(祖先)而不是 DepartmentA 类(后代)。
在此示例中,我知道 emp.Department 中有后代,但在我的应用程序中我不知道。所以这个问题的解决方案必须是通用的。
我试图在 AutoMapper 中解决这个问题。得到了同样的结果。正如@Prolog 在下面写的那样,AutoMapper 正在工作。我更新了主要代码。
如果有人在 Mapster 中解决了问题,我仍然很感兴趣。
解决方案
您需要使用ShallowCopyForSameType,AutoMapper 将只执行深拷贝声明的类型,Mapster 对所有类型执行深拷贝。