AutoMapper：爲映射引擎創建通用包裝器

我想爲AutoMapper映射引擎創建通用包裝器。我的最終目標是綁定到一個接口。AutoMapper：爲映射引擎創建通用包裝器

public interface IMappingEngine 
{ 
    TDestination Map<TSource, TDestination>(TSource source); 
}

我會用DI解決它。

然後我基於AutoMapper MappingEngine創建此接口的實現。

public class AutoMapperMappingEngine : IMappingEngine 
{ 
    private readonly ConfigurationStore configurationStore; 
    private readonly MappingEngine mappingEngine; 

    public AutoMapperMappingEngine() 
    { 
     this.configurationStore = new ConfigurationStore(new TypeMapFactory(), MapperRegistry.Mappers); 
     this.RegisterMappings(); 
     this.configurationStore.AssertConfigurationIsValid(); 
     this.mappingEngine = new MappingEngine(this.configurationStore); 
    } 

    /// <summary> 
    /// This method registers alternate mappings for already existing mappings. 
    /// </summary> 
    private void RegisterMappings() 
    { 
     // some code 
     // this.configurationStore.CreateMap<> 
    } 

    public TDestination Map<TSource, TDestination>(TSource source) 
    { 
     TDestination mappingResult = this.mappingEngine.Map<TDestination>(source); 
     return mappingResult; 
    } 
}

但我堅持一個問題。如果我需要同一對類型的兩個以上不同映射，會發生什麼？

IMappingEngine autoMapperMappingEngine; 
// Initialize autoMapperMappingEngine 
FooModel result; 

if(firstCondition) 
{ 
    result = autoMapperMappingEngine.Map<FooEntity, FooModel>(entity); 
} 
else 
{ 
    if(secondCondition) 
    { 
     result = autoMapperMappingEngine.Map<FooEntity, FooModel>(entity); 
    } 
    else 
    { 
     result = autoMapperMappingEngine.Map<FooEntity, FooModel>(entity); 
    } 
}

如果我註冊的RegisterMappings內按順序幾個不同的映射最後映射將重疊的休息。你可以給一些建議如何實現我想要的嗎？

來源

2017-04-26 Joseph Katzman