elasticsearch 5 - 如何查询对象数据类型和嵌套的json数组

Question

我想查询已加载到 Elasticsearch 5 中的嵌套数据，但每个查询都没有返回任何内容。数据是对象数据类型和json 嵌套数组。

这是嵌套数据类型，即 json 的 team_members 数组：

[{
"id": 6,
"name": "mike",
"priority": 1
}, {
"id": 7,
"name": "james",
"priority": 2
}]

该对象数据类型即availability_slot json：

{
"monday": {
    "on": true,
    "end_time": "15",
    "start_time": "9",
    "end_time_unit": "pm",
    "start_time_unit": "am",
    "events_starts_every": 10
}
}

这是我的弹性搜索映射：

{
"meetings_development_20170716013030509": {
    "mappings": {
        "meeting": {
            "properties": {
                "account": {"type": "integer"},
                "availability_slot": {
                    "properties": {
                        "monday": {
                            "properties": {
                                "end_time": {"type": "text"},
                                "end_time_unit": {"type": "text"},
                                "events_starts_every": {
                                      "type":"integer"
                                },
                                "on": {"type": "boolean"},
                                "start_time": {"type": "text"},
                                "start_time_unit": {
                                   "type": "text"
                                }
                            }
                        }
                    }
                },
                "team_members": {
                    "type": "nested",
                    "properties": {
                        "id": {"type": "integer"},
                        "name": {"type": "text"},
                        "priority": {"type": "integer"}
                    }
                }
            }
        }
    }
 }
}

我有两个查询由于不同的原因而失败：

查询 1 尽管 Elasticsearch 中存在记录，但该查询返回的计数为零，我发现查询因过滤器而失败：

curl -u elastic:changeme http://172.19.0.4:9200/meetings_development/_search?pretty -d '{"query":{"nested":{"path":"team_members","score_mode":"avg","query":{"bool":{"must":[{"match":{"team_members.name":"mike"}},{"match":{"team_members.priority":1}}],"filter":[{"match":{"account":1}}]}}}}}'

这将返回零结果：

{
"took" : 8,
"timed_out" : false,
"_shards" : {
  "total" : 5,
  "successful" : 5,
  "failed" : 0
},
"hits" : {
  "total" : 0,
  "max_score" : null,
  "hits" : [ ]
 }
}

不带过滤器的查询 1 与上面的不带过滤器的查询相同：

curl -u elastic:changeme http://172.19.0.4:9200/meetings_development/_search?pretty -d '{"query":{"nested":{"path":"team_members","score_mode":"avg","query":{"bool":{"must":[{"match":{"team_members.name":"mike"}},{"match":{"team_members.priority":1}}]}}}}}'

上面的查询返回 3 个命中：

{
"took" : 312,
"timed_out" : false,
"_shards" : {
  "total" : 5,
  "successful" : 5,
  "failed" : 0
},
"hits" : {
  "total" : 3,
  "max_score" : 2.1451323,
  "hits" : [{**results available here**} ]
 }
}

查询 2 获取对象数据类型

curl -u elastic:changeme http://172.19.0.4:9200/meetings_development/_search?pretty -d '{"query":{"bool":{"must":{"match":{"availability_slot.start_time":1}},"filter":[{"match":{"account":1}}]}}}'

查询返回命中为零，但数据位于 elasticsearch 中：

{
"took" : 172,
"timed_out" : false,
"_shards" : {
  "total" : 5,
  "successful" : 5,
  "failed" : 0
},
"hits" : {
  "total" : 0,
  "max_score" : null,
  "hits" : [ ]
 }
}

如何让两个查询都按帐户进行过滤。谢谢

Answer 1

这个elasticsearch指南链接对于提出如下所示的正确elasticsearch查询非常有帮助：

查询 1 获取 json 的嵌套数组

 {
  "query" => {

 "bool": {
  "must": [
   {
    "match": {
      "name": "sales call"
    }
   },
   {"nested" => {
  "path" => "team_members",
  "score_mode" => "avg",
  "query" => {
    "bool" => {
      "must" => {
        "match" => {"team_members.name" => "mike"} 
      }
    }
   }
  }
 }
 ],
  "filter": {
    "term": {
      "account": 1
    }
   }
  },


 }
}

只需将查询传递给弹性搜索，如下所示：

curl http://172.19.0.4:9200/meetings_development/_search?pretty -d '{"query":{"bool":{"must":[{"match":{"name":"sales call"}},{"nested":{"path":"team_members","score_mode":"avg","query":{"bool":{"must":{"match":{"team_members.name":"mike"}}}}}}],"filter":{"term":{"account":1}}}}}'

对象数据类型（即 json）的查询 2 的正确语法

 {
   "query": {
     "bool": {
       "must": { 
          "match": {'availability_slot.monday.start_time' => '9'} 
       },
     "filter": [{
          "match":  {'account': 1}
     }]
   }
 }
}

您可以像这样将其传递给elasticsearch：

curl http://172.19.0.4:9200/meetings_development/_search?pretty -d '{"query":{"bool":{"must":{"match":{"availability_slot.monday.start_time":"9"}},"filter":[{"match":{"account":1}}]}}}'