c# - TermAggregation和其他TermAggregation在AggregationDictionary中不起作用

使用NEST我有一个看起来像这样的请求

var searchRequest = new SearchRequest<T>()
{
...
    Aggregations = new TermsAggregation("field1")
    {
        Field = "field1",
        Aggregations = new TermsAggregation("field2")
        {
            Field = "field2",
        }
    },
...
}

await _elasticClient.SearchAsync<T>(searchRequest)

我得到的结果与我预期的一样，“field1”上的每个替代项都在“field2”上进行了汇总

我需要其他聚合，因此将术语“聚合”放在AggregationDictionary中。

var aggs = new AggregationDictionary();
aggs.Add("field1", new TermsAggregation("field1")
    {
        Field = "field1",
        Aggregations = new TermsAggregation("field2")
        {
            Field = "field2",
        }
    })
...
var searchRequest = new SearchRequest<T>()
{
...
    Aggregations = aggs,
...
}
...
await _elasticClient.SearchAsync<T>(searchRequest)

现在，我在“field1”上获得了聚合，但在“field2”上没有子聚合。

我是否缺少某些东西或应该以这种方式工作？

编辑1:将密钥添加到for AggregationDictionary.Add，以便我的示例代码(希望)可以编译并包含我的SearchAsync调用

最佳答案

aggs.Add( new TermsAggregation("field1")
    {
        Field = "field1",
        Aggregations = new TermsAggregation("field2")
        {
            Field = "field2",
        }
    })

由于 AggregationDictionary.Add() method signature是

public void Add(string key, AggregationContainer value)

以下

var client = new ElasticClient();

var aggs = new AggregationDictionary();
aggs.Add("field1", new TermsAggregation("field1")
{
    Field = "field1",
    Aggregations = new TermsAggregation("field2")
    {
        Field = "field2",
    }
});

var request = new SearchRequest<object>
{
    Aggregations =aggs
};

var searchResponse = client.Search<object>(request);

发出以下请求

{
  "aggs": {
    "field1": {
      "aggs": {
        "field2": {
          "terms": {
            "field": "field2"
          }
        }
      },
      "terms": {
        "field": "field1"
      }
    }
  }
}

看看documentation on Writing Aggregations。可以通过&&将汇总在一起将汇总合并到同一级别

关于c# - TermAggregation和其他TermAggregation在AggregationDictionary中不起作用，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/61227106/