AutoMapper：最大深度图 [英] AutoMapper: Max graph depth

问题描述

我有以下的实体这是与名单连接：

I have the following entities which are connected with lists:

国家 - >地区 - >市 - >街道

Country -> Region -> Municipality -> Street

当我映射一个国家反对我的DTO，AutoMapper自动项目我的整个图形，下至街道一路，这是一个伟大的默认值。
在一个特定的用例，我想只映射根对象（国家）及其直接子（地区）。 。然后，这些地区应该有连接各市（或空）的空列表

When I map a Country object to my DTO, AutoMapper automatically projects my entire graph, all the way down to Streets, which is a great default. In a specific usecase I would like to map just the root object (Country) and its immediate children (Regions). These regions should then have en empty list of Municipalities (or null).

要实现这一目标的一个方法是创建一个映射是这样的：

One way to achieve this is to create a map like this:

Mapper.CreateMap<Data.Country, Dto.Country>();
Mapper.CreateMap<Data.Region, Dto.Region>()
  .ForMember(dest => dest.Municipalities, opt => opt.Ignore())

这将意味着投影区域作为根对象时，它的市政名单将被忽略。针对此解决方法是为每一个可能的根对象创建单独的ConfigurationStore对象，但是这会导致很多不同的ConfigurationStores的。有没有办法告诉AutoMapper只下跌映射到对象图有一定深度？

This would mean that when projecting a Region as the root object, its list of Municipalities will be ignored. A workaround for this is to create separate ConfigurationStore objects for each possible root object, but that would result in a lot of different ConfigurationStores. Is there any way to tell AutoMapper to only map down to a certain depth in the object graph?

推荐答案

是的，你可以定义地图具体MAXDEPTH这样的：

Yes you can define map specific MaxDepth like:

Mapper.CreateMap<Source, Destination>().MaxDepth(1);

更多信息/ AutoMapper /维基相对=nofollow> https://github.com/AutoMapper/AutoMapper/wiki

More info: https://github.com/AutoMapper/AutoMapper/wiki

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