62_数据建模实战_对每个用户发表的博客进行分组

62_数据建模实战_对每个用户发表的博客进行分组

1、构造更多测试数据

PUT /website/users/3
{
  "name": "黄药师",
  "email": "huangyaoshi@sina.com",
  "birthday": "1970-10-24"
}

PUT /website/blogs/3
{
  "title": "我是黄药师",
  "content": "我是黄药师啊，各位同学们！！！",
  "userInfo": {
    "userId": 1,
    "userName": "黄药师"
  }
}

PUT /website/users/2
{
  "name": "花无缺",
  "email": "huawuque@sina.com",
  "birthday": "1980-02-02"
}

PUT /website/blogs/4
{
  "title": "花无缺的身世揭秘",
  "content": "大家好，我是花无缺，所以我的身世是。。。",
  "userInfo": {
    "userId": 2,
    "userName": "花无缺"
  }
}

2、对每个用户发表的博客进行分组

比如说，小鱼儿发表的那些博客，花无缺发表了哪些博客，黄药师发表了哪些博客

GET /website/blogs/_search 
{
  "size": 0, 
  "aggs": {
    "group_by_username": {
      "terms": {
        "field": "userInfo.username.keyword"
      },
      "aggs": {
        "top_blogs": {
          "top_hits": {
            "_source": {
              "include": "title"
            }, 
            "size": 5
          }
        }
      }
    }
  }
}