Question

对于AutoMapper，我实现了以下工作，但重复映射代码：

cfg.CreateMap<RmsOelEntryUnlinkedPersonInputDto, AddNewOELEntryInvolvedEntitiesUnlinkedInvolvedPersonUnlinked>()
    .ForMember(dest => dest.DateOfBirth, opts => opts.MapFrom(src => FormatDateType(src.DateOfBirth)))
    .ForMember(dest => dest.EffectiveFromTime, opts => opts.MapFrom(src => FormatDateTimeType(src.EffectiveFromTime)))
    .ForMember(dest => dest.EffectiveToTime, opts => opts.MapFrom(src => FormatDateTimeType(src.EffectiveToTime)));

cfg.CreateMap<RmsOelEntryUnlinkedAddressInputDto, AddNewOELEntryInvolvedEntitiesUnlinkedInvolvedAddressUnlinked>()
    .ForMember(dest => dest.EffectiveFromTime, opts => opts.MapFrom(src => FormatDateTimeType(src.EffectiveFromTime)))
    .ForMember(dest => dest.EffectiveToTime, opts => opts.MapFrom(src => FormatDateTimeType(src.EffectiveToTime)));

RmsOelEntryUnlinkedPersonInputDto和RmsOelEntryUnlinkedAddressInputDto都继承自RmsOelEntryInvolvedEntityBaseDto，此基类的属性为EffectiveFromTime和EffectiveToTime。

我不希望如上所示重复映射EffectiveFromTime和EffectiveToTime。

但是，AddNewOELEntryInvolvedEntitiesUnlinkedInvolvedPersonUnlinked和AddNewOELEntryInvolvedEntitiesUnlinkedInvolvedAddressUnlinked是自动生成的，并且没有基类。因此，我不知道如何使用AutoMapper＆＃34; Include＆＃34;映射选项。

如何对此进行优化以删除重复的映射？

Answer 1

我有类似的情况，并采用了辅助扩展方法。我根据你的情况定制：

internal static class CommonMapperExtensions
{
     internal static IMappingExpression<TSource, TDestination> MapCommonFields<TSource, TDestination>(this IMappingExpression<TSource, TDestination> m)
         where TSource : RmsOelEntryInvolvedEntityBaseDto
         where TDestination : IEffective
     {
         return m
            .ForMember(dest => dest.EffectiveFromTime, opts => opts.MapFrom(src => FormatDateTimeType(src.EffectiveFromTime)))
            .ForMember(dest => dest.EffectiveToTime, opts => opts.MapFrom(src => FormatDateTimeType(src.EffectiveToTime)));                
     }
}

然后配置如下：

cfg.CreateMap<RmsOelEntryUnlinkedPersonInputDto, AddNewOELEntryInvolvedEntitiesUnlinkedInvolvedPersonUnlinked>()
    .MapCommonFields()
    .ForMember(dest => dest.DateOfBirth, opts => opts.MapFrom(src => FormatDateType(src.DateOfBirth)));

cfg.CreateMap<RmsOelEntryUnlinkedAddressInputDto, AddNewOELEntryInvolvedEntitiesUnlinkedInvolvedAddressUnlinked>()
    .MapCommonFields();

如果AddNewOELEntryInvolvedEntitiesUnlinkedInvolvedAddressUnlinked和AddNewOELEntryInvolvedEntitiesUnlinkedInvolvedPersonUnlinked是自动生成的，我会认为它们是偏袒的。

然后你可以为这些类建立通用接口：

public interface IEffective 
{
     DateTime EffectiveFromTime {get; set;}
     DateTime EffectiveToTime {get; set;}
}

public partial AddNewOELEntryInvolvedEntitiesUnlinkedInvolvedAddressUnlinked
    : IEffective { }

public partial AddNewOELEntryInvolvedEntitiesUnlinkedInvolvedPersonUnlinked
    : IEffective { }

Answer 2

public class TBaseModel
{
    public void ConfigureMapFrom(IMappingExpression<TEntity, TBaseModel> mapping)
    {
        // ... mappings
    }
}

public class TModel : TBaseModel
{
    public void ConfigureMapFrom(IMappingExpression<TEntity, TModel> mapping)
    {
        mapping.IncludeBase<TEntity, TBaseModel>();

        // ... other mappings
    }
}

Automapper基类映射

2 个答案: