列表中的推土机映射器重复项

Question

我正在尝试使用6.4.1版的dozermapper来映射和覆盖具有新对象的对象列表。

更准确地说，当映射完成时，我想要一个包含仅目标类别的项目的列表。

这是我要映射的字段。目标类和源类都具有确切的字段。

using MongoDB.Bson;
using MongoDB.Bson.Serialization.Attributes;
using MongoDB.Driver;
using System;
using System.Linq;

namespace StackOverflow
{
    public class Program
    {
        public class Entity
        {
            [BsonId]
            public ObjectId Id { get; set; }
            public DateTime TimeStamp { get; set; }
        }

        public class Sample : Entity
        {
            public string Something { get; set; }
        }

        private static void Main(string[] args)
        {
            var collection = new MongoClient("mongodb://localhost:27017")
                                 .GetDatabase("Test")
                                 .GetCollection<Entity>("Samples");

            var sample = new Sample
            {
                Id = ObjectId.GenerateNewId(),
                Something = "something",
                TimeStamp = DateTime.UtcNow
            };

            collection.InsertOne(sample);

            var result = collection.AsQueryable()
                                   .Where(s =>
                                          s.TimeStamp >= DateTime.UtcNow.AddMinutes(-1) &&
                                          s.TimeStamp <= DateTime.UtcNow.AddMinutes(1))
                                   .ToArray();
        }
    }
}

图片类：

@Getter
@Setter
public class UpdateProductRequest {
    private Images images;
}

最初，我的目标类别（ Product ）的每个列表中都有2个项目。

@Getter
@Setter
public class Images {
    private List<String> small;
    private List<String> medium;
    private List<String> large;
}

我的目标类别（ UpdateProductRequest ）中每个

1个项目：

{
   "images":{
      "small":[
         "https://google.com",
         "https://google.com"
      ],
      "medium":[
         "https://amazon.com",
         "https://amazon.com"
      ],
      "large":[
         "https://microsoft.com",
         "https://microsoft.com"
      ]
   }
}

具有此映射器配置...

{
   "images":{
      "small":[
         "aa"
      ],
      "medium":[
         "bb"
      ],
      "large":[
         "cc"
      ]
   }
}

...将目标类中的项目添加到源类中：

<mapping map-null="false" type="one-way">
    <class-a>com.project.api.models.requests.UpdateProductRequest</class-a>
    <class-b>com.project.api.persistence.domain.Product</class-b>
    <field remove-orphans="true">
        <a>images</a>
        <b>images</b>
    </field>
</mapping>

具有此映射器配置...

{
   "images":{
      "small":[
         "https://google.com",
         "https://google.com",
         "aa"
      ],
      "medium":[
         "https://amazon.com",
         "https://amazon.com",
         "bb"
      ],
      "large":[
         "https://microsoft.com",
         "https://microsoft.com",
         "cc"
      ]
   }
}

...产生以下结果：

...
<!-- Specifying the relationship-type doesn't change a thing.-->
<field remove-orphans="true" relationship-type="non-cumulative">
    <a>images.small</a>
    <b>images.small</b>
</field>