弹性搜索结果的返回距离? [英] Return distance in elasticsearch results?
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。
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.
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)"
}
}
}
'
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