Arrays 在匹配嵌套/内部对象中的字段时连接elasticsearch索引

我试图通过使用术语过滤器查找来加入2个elasticsearch索引。我提到和。这些示例在字段数组（如“followers”）：[“1”、“3”]和join上查找，对于类似的数据效果很好

我的要求是在对象数组中加入一个字段。当我扩展上面的示例以包含一个对象数组时，我的查询失败。 以下是样本数据：

PUT /users/user/2 {
   "followers" : [
  {
    "userId":"1",
    "username":"abc",
    "location":"xyz"
   },
   {
    "userId":"3",
    "username":"def",
    "location":"xyz"
   }
}
]
}

PUT /tweets/tweet/1 {
   "user" : "2"
}

PUT /tweets/tweet/2 {
   "user" : "1"
}

我现在试图找到由用户2的追随者创建的推文

POST /tweets/_search {
  "query" : {
"filtered" : {
  "filter" : {
    "terms" : {
      "user" : {
        "index" : "users",
        "type" : "user",
        "id" : "2",
        "path" : "followers.userId"
      },
      "_cache_key" : "user_2_friends"
    }
  }
}
  }
}

我对上述查询的搜索结果为0。我还尝试了其他两种方法1）在映射期间将followers对象声明为嵌套对象，并在查询中使用“nested”，2）在将路径指定为“followers”后尝试为followers.userId添加匹配查询。没有任何结果

---

术语筛选查找是否支持对象数组？任何解决我问题的方法都会对我有很大帮助，除非我遗漏了什么。您使用的Elasticsearch版本是什么？我用的是1.3.4

因此，我创建了两个索引并添加了您列出的文档：

curl -XPUT "http://localhost:9200/users"

curl -XPUT "http://localhost:9200/users/user/2 " -d '
{
   "followers" : [
  {
    "userId":"1",
    "username":"abc",
    "location":"xyz"
   },
   {
    "userId":"3",
    "username":"def",
    "location":"xyz"
   }
   ]
}'

curl -XPUT "http://localhost:9200/tweets"

curl -XPUT "http://localhost:9200/tweets/tweet/1 " -d'
{
   "user" : "2"
}'

curl -XPUT "http://localhost:9200/tweets/tweet/2 " -d'
{
   "user" : "1"
}'

然后运行搜索查询：

curl -XPOST "http://localhost:9200/tweets/_search " -d'
{
   "query": {
      "filtered": {
         "filter": {
            "terms": {
               "user": {
                  "index": "users",
                  "type": "user",
                  "id": "2",
                  "path": "followers.userId"
               },
               "_cache_key": "user_2_friends"
            }
         }
      }
   }
}'

得到了这个结果：

{
   "took": 2,
   "timed_out": false,
   "_shards": {
      "total": 5,
      "successful": 5,
      "failed": 0
   },
   "hits": {
      "total": 1,
      "max_score": 1,
      "hits": [
         {
            "_index": "tweets",
            "_type": "tweet",
            "_id": "2",
            "_score": 1,
            "_source": {
               "user": "1"
            }
         }
      ]
   }
}

以下是我使用的代码：

---

如果有索引，请清除索引

curl -XDELETE "http://example.com:9200/currencylookup/"

curl -XDELETE "http://example.com:9200/currency/"

---

创建查找表

curl -XPUT http://example.com:9200/currencylookup/type/2 -d '
{ "conv" : [ 
{  "currency":"usd","username":"abc", "location":"USA" }, 
{  "currency":"inr", "username":"def", "location":"India" },
{  "currency":"IDR", "username":"def", "location":"Indonesia" }]
}'

---

让我们放置一些虚拟文档

curl -XPUT "http://example.com:9200/currency/type/USA" -d '{ "amount":"100", "currency":"usd", "location":"USA" }'

curl -XPUT "http://example.com:9200/currency/type/JPY" -d '{ "amount":"50", "currency":"JPY", "location":"JAPAN" }'

curl -XPUT "http://example.com:9200/currency/type/INR" -d '{ "amount":"50", "currency":"inr", "location":"INDIA" }'

curl -XPUT "http://example.com:9200/currency/type/IDR" -d '{ "amount":"30", "currency" : "IDR", "location": "Indonesia" }'

# curl http://example.com:9200/currency/_search?pretty -d '{
   "query" : {
 "filtered" : {
   "filter" : {
     "terms" : {
       "currency" : {
         "index" : "currencylookup",
         "type" : "type",
         "id" : "2",
         "path" : "conv.currency"
       },
       "_cache_key" : "currencyexchange"
     }
   }
 }
   }
 }'
{
  "took" : 2,
  "timed_out" : false,
  "_shards" : {
    "total" : 5,
    "successful" : 5,
    "failed" : 0
  },
  "hits" : {
    "total" : 2,
    "max_score" : 1.0,
    "hits" : [ {
      "_index" : "currency",
      "_type" : "type",
      "_id" : "INR",
      "_score" : 1.0,
      "_source":{ "amount":"50", "currency":"inr", "location":"INDIA" }
    }, {
      "_index" : "currency",
      "_type" : "type",
      "_id" : "USA",
      "_score" : 1.0,
      "_source":{ "amount":"100", "currency":"usd", "location":"USA" }
    } ]
  }
}

---

检查输出的时间

curl http://example.com:9200/currency/_search?pretty -d '{
   "query" : {
 "filtered" : {
   "filter" : {
     "terms" : {
       "currency" : {
         "index" : "currencylookup",
         "type" : "type",
         "id" : "2",
         "path" : "conv.currency"
       },
       "_cache_key" : "currencyexchange"
     }
   }
 }
   }
 }'

结果

curl -XPUT "http://example.com:9200/currency/type/USA" -d '{ "amount":"100", "currency":"usd", "location":"USA" }'

curl -XPUT "http://example.com:9200/currency/type/JPY" -d '{ "amount":"50", "currency":"JPY", "location":"JAPAN" }'

curl -XPUT "http://example.com:9200/currency/type/INR" -d '{ "amount":"50", "currency":"inr", "location":"INDIA" }'

curl -XPUT "http://example.com:9200/currency/type/IDR" -d '{ "amount":"30", "currency" : "IDR", "location": "Indonesia" }'

# curl http://example.com:9200/currency/_search?pretty -d '{
   "query" : {
 "filtered" : {
   "filter" : {
     "terms" : {
       "currency" : {
         "index" : "currencylookup",
         "type" : "type",
         "id" : "2",
         "path" : "conv.currency"
       },
       "_cache_key" : "currencyexchange"
     }
   }
 }
   }
 }'
{
  "took" : 2,
  "timed_out" : false,
  "_shards" : {
    "total" : 5,
    "successful" : 5,
    "failed" : 0
  },
  "hits" : {
    "total" : 2,
    "max_score" : 1.0,
    "hits" : [ {
      "_index" : "currency",
      "_type" : "type",
      "_id" : "INR",
      "_score" : 1.0,
      "_source":{ "amount":"50", "currency":"inr", "location":"INDIA" }
    }, {
      "_index" : "currency",
      "_type" : "type",
      "_id" : "USA",
      "_score" : 1.0,
      "_source":{ "amount":"100", "currency":"usd", "location":"USA" }
    } ]
  }
}

结论

大写字母是罪魁祸首

您可以看到，'IDR'在大写字母中，因此匹配失败，'JPY'不在查找中，即使它在那里，也不会匹配，因为它在大写字母中

交叉匹配值必须使用小写字母或数字，如

例如：

• abc
• 1abc

---

我实际上是在尝试另一个数据集。但是因为我不想把这些数据放在这里，所以我修改了tweets示例并发布了。我正在使用es140b，但您是对的，我现在尝试使用的代码与我使用的代码相同。但我的原始数据集仍然没有关联<代码>curl-XPUT“http://localhost:9200/ctest/cur/1“-d”{“conv”：[{“货币”：“美元”，“名称”：“美元”}，{“货币”：“印度卢比”，“名称”：“印度卢比”}，{“货币”：“印尼盾”，“名称”：“印尼盾”}]}

curl-XPUT”http://localhost:9200/etest/e/1“-d”{“金额”：“100”，“货币”：“美元”，“地点”：“美国”}“curl-XPUT”http://localhost:9200/etest/e/2“-d'{”amount:“50”，“curl:“JPY”，“location:“JAPAN”}”

我的查询没有结果

curl-XPOST”http://localhost:9200/etest/e/_search“-d”{“查询”：{“筛选”：{“筛选”：{“术语”：{“货币”：{“索引”：“ctest”，“类型”：“cur”，“id”：“1”，“路径”：“conv.currency”}，“\u cache\u key”：“test”}”“

区分大小写似乎是个问题，它现在对我有效。但是有一个小的更正。看起来匹配工作正常，即使货币文档中有大写，只要查找文档有小写。有一个选项可以解决此问题，请检查