java - Elasticsearch : How to search in two documents in single index?

Question

我在名为 inventory 的单个索引中配置了两个文档。

1. 个人资料(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"}
            }
        }
}

个人资料包含以下信息

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-relation 具有哪个用户使用哪个移动信息:

{   "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，该列表是我们从客户那里获取的输入。

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

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

作为结果，如果 user2 请求相同的结果，它应该返回空。

我尝试过查询和 boolean 。但它仅在单个文档内搜索。如何在 Elasticsearch 中实现这一点？

Answer 1

上述模型属于多对多关系数据模型。一个用户可以拥有许多分配给他的移动电话，并且在一段时间内可以将一个移动设备分配给许多用户。因此更改了数据模型以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"}                               
            }
        }
}}}

但痛苦的是，每当将手机分配给用户时，我都需要花费额外的精力来更新两行。

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"] }

为了回答/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"} }]
                  }
                }
              }
            }
        ]   
    }
}}

我引用了以下链接来执行此操作:https://medium.com/@mena.meseha/briefly-describe-how-to-store-complex-relational-data-in-elasticsearch-f30277317b1