elasticsearch 父子文档

父子文档 适用于大量更新的操作

1. 定义mappings 设置文档父子关系

   {
     "mappings": {
       "properties": {
           "blog_comments_relation":{
             "type":"join",
             "relations":{
               "blog":"comments"
             }
           },
           "title":{
             "type":"text"
           },
           "content":{
             "type":"keyword"
           }
       }
     }
   }

2. 索引数据

• 索引父文档 明确文档id

  script

  PUT /my_blogs/_doc/blog_id_1
  {
    "title":"super book",
    "content":"dfslkfjdsafdskla;klf",
    "blog_contents_relation":{
      "name":"blog"
    }
  }

• 索引子文当 需指定其父文档id

  script

  PUT /my_blogs/_doc/comments_id_1?routing=blog_id_1
  {
    "comments":"22222222222",
    "username":"user2",
    "blog_contents_relation":{
      "name":"comments",
      "parent":"blog_id_1"
    }
  }

根据父id查询子文档

{
  "query":{
    "parent_id":{
      "type":"comments",
      "id":"blog_id_1"
    }
  }
}

根据子文档 查询父文档

{
  "query":{
    "has_child":{
      "type":"comments",
      "query": {
        "match": {
          "username": "user1"
        }
      }
    }
  }
}