ElasticSearch地理距离过滤器,阵列中有多个位置 - 可能吗？

Question

假设我们在ElasticSearch索引中有一堆文档.每个文档在数组中都有多个位置,如下所示:

{
  "name": "foobar",
  "locations": [
    {
      "lat": 40.708519,
      "lon": -74.003212
    },
    {
      "lat": 39.752609,
      "lon": -104.998100
    },
    {
      "lat": 51.506321,
      "lon": -0.127140
    }
  ]
}

根据ElasticSearch参考指南

该geo_distance过滤器可以用每份文件的多个位置/点工作.一旦单个位置/点与过滤器匹配,文档将包含在过滤器中.

那么,是否可以创建一个地理距离过滤器来检查阵列中的所有位置？

不幸的是,这似乎不起作用:

{
  "filter": {
    "geo_distance": {
      "distance": "100 km",
      "locations": "40, -105"
    }
  }
}

抛出" QueryParsingException[[myIndex] failed to find geo_point field [locations]"既然locations不是一个单一的,geo_point而是一个geo_points 的数组.

Answer 1

您是否为文档指定了geo_point映射？

curl -XDELETE 'http://localhost:9200/twitter/'
curl -XPUT 'http://localhost:9200/twitter/'

curl -XPUT 'http://localhost:9200/twitter/tweet/_mapping' -d '
{
    "tweet" : {
        "properties" : {
            "locations" : {"type" : "geo_point"}
        }
    }
}'

curl -XPUT 'http://localhost:9200/twitter/tweet/1' -d '
{ 
    "user": "kimchy", 
    "postDate": "2009-11-15T13:12:00", 
    "message": "Trying out Elastic Search, so far so good?",
    "locations" : [{
        "lat" : 50.00,
        "lon" : 10.00
    },
    {
        "lat" : 40.00,
        "lon" : 9.00
    }]
}'

curl -XPUT 'http://localhost:9200/twitter/tweet/2' -d '
{ 
    "user": "kimchy", 
    "postDate": "2009-11-15T13:12:00", 
    "message": "Trying out Elastic Search, so far so good?",
    "locations" : [{
        "lat" : 30.00,
        "lon" : 8.00
    },
    {
        "lat" : 20.00,
        "lon" : 7.00
    }]
}'

curl -XGET 'http://localhost:9200/twitter/tweet/_search' -d '{
    "query": {
        "filtered" : {
            "query" : {
                "match_all" : {}
            },
            "filter" : {
                "geo_distance" : {
                    "distance" : "20km",
                    "tweet.locations" : {
                        "lat" : 40.00,
                        "lon" : 9.00
                    }
                }
            }
        }
    }
}'

Answer 2

对于 Elasticsearch 5.1 版本，对于上述相同的索引，查询将像这样，

curl -XGET 'http://localhost:9200/twitter/tweet/_search' -d '
{
    "query": {
        "bool": {
            "must": {
                "match_all": {}
            },
            "filter": {
                "geo_distance": {
                    "distance": "200km",
                    "locations": {
                        "lat": 40.00,
                        "lon": 9.00
                    }
                }
            }
        }
    }
}'