弹性搜索结果的返回距离? [英] Return distance in elasticsearch results?

查看:158
本文介绍了弹性搜索结果的返回距离?的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

我的问题类似于此一个



简单来说,有没有办法通过_geo_distance排序时返回地理距离?



更新:
要澄清,我想要结果以随机顺序包括距离。

解决方案

是的,可以通过使用脚本字段



例如,假设您的文档具有名为位置的地理位置字段,则可以使用以下内容: / p>

(注意 \\\' 只是一个转义的单引号,所以 \\\'location \\\' 真的是'location'

  curl -XGET'http://127.0.0.1:9200/geonames/_search?pretty=1'-d'
{
script_fields:{
distance: {
params:{
lat:2.27,
lon:50.3
},
script:doc [\\\'location\\ \\ u0027] .distanceInKm(lat,lon)
}
}
}
'

#[Thu Feb 16 11:20:29 2012 ]回复:
#{
#hits:{
#hits:[
#{
#_score:1,
#fields:{
#distance:466.844095463887
#},
#_index:geonames_1318 324623,
#_id:6436641_en,
#_type:place
#},
... etc

如果您希望还可以返回 _source 字段,那么您可以指定如下:

  curl -XGET'http://127.0.0.1:9200/geonames/_search?pretty=1 'd'
{
fields:[_source],
script_fields:{
distance:{
params:{
lat:2.27,
lon:50.3
},
script:doc [\\\'location\\\'] .distanceInKm(lat,lon)
}
}
}
'


My question is similar to this one.

Simply, is there a way to return the geo distance when NOT sorting with _geo_distance?

Update: To clarify, I want the results in random order AND include distance.

解决方案

Yes you can, by using a script field.

For instance, assuming your doc have a geo-point field called location, you could use the following:

(note the \u0027 is just an escaped single quote, so \u0027location\u0027 is really 'location')

curl -XGET 'http://127.0.0.1:9200/geonames/_search?pretty=1'  -d '
{
   "script_fields" : {
      "distance" : {
         "params" : {
            "lat" : 2.27,
            "lon" : 50.3
         },
         "script" : "doc[\u0027location\u0027].distanceInKm(lat,lon)"
      }
   }
}
'

# [Thu Feb 16 11:20:29 2012] Response:
# {
#    "hits" : {
#       "hits" : [
#          {
#             "_score" : 1,
#             "fields" : {
#                "distance" : 466.844095463887
#             },
#             "_index" : "geonames_1318324623",
#             "_id" : "6436641_en",
#             "_type" : "place"
#          },
... etc

If you want the _source field to be returned as well, then you can specify that as follows:

curl -XGET 'http://127.0.0.1:9200/geonames/_search?pretty=1'  -d '
{
   "fields" : [ "_source" ],
   "script_fields" : {
      "distance" : {
         "params" : {
            "lat" : 2.27,
            "lon" : 50.3
         },
         "script" : "doc[\u0027location\u0027].distanceInKm(lat,lon)"
      }
   }
}
'

这篇关于弹性搜索结果的返回距离?的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!

查看全文
登录 关闭
扫码关注1秒登录
发送“验证码”获取 | 15天全站免登陆