我如何使用Nest使父母和孩子一起进行Elasticsearch

Question

我有一个实体XEntity，该实体具有相同类型的子代列表。每个实体都可以有他的孩子的列表。它们通过“父子关系”相互关联。（https://www.elastic.co/guide/en/elasticsearch/client/net-api/master/parent-child-relationships.html）

https://imgur.com/KmnGOPg

我可以毫无问题地插入或更新这些实体，但是我无法聚在一起。谁能帮我？预先感谢。

Answer 1

如果您使用的是父子关系，则可以按父级查找子级，反之亦然

Finding Children by Their Parents

GET /company/employee/_search
{
  "query": {
    "has_parent": {
      "type": "branch", 
      "query": {
        "match": {
          "country": "UK"
        }
      },
      "inner_hits": {}
    }
  }
}

还有Finding Parents by Their Children

GET /company/branch/_search
{
  "query": {
    "has_child": {
      "type": "employee",
      "query": {
        "range": {
          "dob": {
            "gte": "1980-01-01"
          }
        }
      },
      "inner_hits": {}
    }
  }
}