弹性搜索:如何在单个索引中搜索两个文档?

时间:2020-04-16 16:17:00

标签: java elasticsearch elasticsearch-query

我在名为清单的单个索引中配置了两个文档。

  1. 个人资料(其中包含用户和移动信息)
  2. p2p关系

库存索引映射属性如下:

{
    "mappings": {
        "properties": {
            "type": {"type": "keyword"},
            "id": {"type": "keyword"},
            "sourceId": {"type": "keyword"},
            "targetId": {"type": "keyword"},
            "firstName": {"type": "text"},
            "lastName": {"type": "text"},
            "createdBy": {"type": "text"},
            "p_type": {"type": "text"},
            "model": {"type": "text"},
            "OS": {"type": "keyword"}
            }
        }
}

个人资料具有以下信息

用户:

{   "type":"profile",   "id" : "user1", "p_type" : "user",  "firstName" : "Ashok", "lastName" : "S" }
{   "type":"profile",   "id" : "user2", "p_type" : "user",  "firstName" : "Arun", "lastName" : "V" }

手机:

{   "type":"profile",   "id" : "mobile1", "p_type" : "mobile",  "model" : "samsung", "OS" : "Android" }
{   "type":"profile",   "id" : "mobile2", "p_type" : "mobile",  "model" : "iPhone", "OS" : "iOS" }

p2p关系具有哪个用户使用了哪个移动信息:

{   "type":"p2p-relation",  "id" : "user1-owns-mobile1", "sourceId" : "user1",  "targetId" : "mobile1", "createdBy" : "admin" }
{   "type":"p2p-relation",  "id" : "user1-owns-mobile2", "sourceId" : "user1",  "targetId" : "mobile2", "createdBy" : "admin" }

在我们的业务案例中,我们需要检索用户拥有的android / iOS手机列表,并从客户那里获得输入。

也就是说,如果user1请求 / mymobiles?query = os == Android ,则应将其转换为ES并期望

{“ type”:“ profile”,“ id”:“ mobile1”,“ p_type”:“ mobile”,“ model”:“ samsung”,“ OS”:“ Android”}

作为结果,如果user2要求相同,则应返回空。

我尝试使用查询和布尔。但是它仅在单个文档中搜索。如何在弹性搜索中实现这一目标?

1 个答案:

答案 0 :(得分:0)

上述模型属于多对多关系数据模型。用户可以在一段时间内为他分配许多移动电话,并且可以向一个用户分配一个移动设备。 因此,将数据模型更改为将其存储为嵌套对象。

{
  "mappings": {
    "properties": {
        "type": {"type": "keyword"},
        "id": {"type": "keyword"},
        "firstName": {"type": "text"},
        "lastName": {"type": "text"},
        "createdBy": {"type": "text"},
        "model": {"type": "text"},
        "OS": {"type": "keyword"},
        "mobiles" : {
            "type" : "nested",
            "properties" : {
                "id": {"type": "keyword"},
                "model": {"type": "text"},
                "OS": {"type": "keyword"},
                "createdBy": {"type": "text"}
            }
        },
        "users" : {
            "type" : "nested",
            "properties" : {
                "id": {"type": "keyword"},
                "firstName": {"type": "keyword"},
                "lastName": {"type": "keyword"},
                "createdBy": {"type": "text"}                               
            }
        }
}}}

但是痛苦的是,每当将手机分配给用户时,我都会花更多的精力来更新两行。

数据存储如下

{   "type":"profile",   "id" : "user1",  "firstName" : "Ashok", "lastName" : "S", "mobiles" : [ {"id" : "uuid1", "model": "samsung", "OS" : "Android"}] }

{   "type":"profile",   {"id" : "uuid1", "model": "samsung", "OS" : "Android"}, "users" : [ "id" : "user1",  "firstName" : "Ashok", "lastName" : "S"] }

要回答/ mymobiles?query = os == Android,我使用了以下查询。

{ 
"query": {
    "bool": {
        "must": [ 
            {
              { "term": {"OS": "android"} },
              "nested": {
                "path": "users",
                "query": {
                  "bool": {
                    "must": [ {"term": {"users.id": "user1"} }]
                  }
                }
              }
            }
        ]   
    }
}}

我已通过以下链接进行此操作:https://medium.com/@mena.meseha/briefly-describe-how-to-store-complex-relational-data-in-elasticsearch-f30277317b1

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