Question

我使用nest 7.0.0和asp.net core 2.2。我想从poco类创建indxe。在elasticsearch索引中创建但没有任何映射。创建索引的方法是：

public async Task CreateIndex()
{
  try
   {
    var getIndexResponse =await ElasticClient.Indices.GetAsync("myindex");
    if (getIndexResponse.Indices == null || !getIndexResponse.Indices.Any())
      {
        var createIndexResponse = await ElasticClient.Indices.CreateAsync("myindex", c => c
                                        .Map(p => p.AutoMap<MyModel>()));
      }
    }
   catch (Exception)
   {
   }
}

和MyModel是这样的：

[ElasticsearchType(IdProperty = nameof(Id), RelationName = "MyModelMessage")]
public class MyModel
{
  [Number(NumberType.Long, Index = true, DocValues = false)]
  public long UserId { get; set; }

  [Date(Index = true)]
  public DateTime CreatedAt { get; set; }

  [Text(Index = false)]
  public string ObjectName { get; set; }

  [Date(Index = true)]
  public DateTime UpdateAt { get; set; }
}

Answer 1

我对照NEST 7.0.1和elasticsearch 7.2.0检查了您的代码，并为该类型创建了映射：

class Program
{
    [ElasticsearchType(IdProperty = nameof(Id), RelationName = "MyModelMessage")]
    public class MyModel
    {
        [Number(NumberType.Long, Index = true, DocValues = false)]
        public long UserId { get; set; }

        [Date(Index = true)] public DateTime CreatedAt { get; set; }

        [Text(Index = false)] public string ObjectName { get; set; }

        [Date(Index = true)] public DateTime UpdateAt { get; set; }
    }

    static async Task Main(string[] args)
    {
        var pool = new SingleNodeConnectionPool(new Uri("http://localhost:9200"));
        var connectionSettings = new ConnectionSettings(pool);
        connectionSettings.DefaultIndex("documents");

        var client = new ElasticClient(connectionSettings);

        var getIndexResponse = await client.Indices.GetAsync("myindex");
        if (getIndexResponse.Indices == null || !getIndexResponse.Indices.Any())
        {
            var createIndexResponse = await client.Indices.CreateAsync("myindex", c => c
                .Map(p => p.AutoMap<MyModel>()));
            Console.WriteLine("index created");
        }
    }
}

和http://localhost:9200/myindex/_mapping返回：

{
  "myindex": {
    "mappings": {
      "properties": {
        "createdAt": {
          "type": "date"
        },
        "objectName": {
          "type": "text",
          "index": false
        },
        "updateAt": {
          "type": "date"
        },
        "userId": {
          "type": "long",
          "doc_values": false
        }
      }
    }
  }
}

缺少什么吗？

NEST不应用属性映射

1 个答案: