solr中的多维点

multi dimensional points in solr

Lucene 在 6.0

中添加了 multi dimensional point support

https://issues.apache.org/jira/browse/LUCENE-7494

如何在 Solr 中使用它？我希望 "simple end to end example" 这将是一个有价值的博客 post。

1) 在架构中定义

curl -XPOST -H 'Content-type:application/json' --data-binary '{
  "add-field-type" : {
    "name":"mypoint",
    "class":"solr.DoublePointField" //is this right? 
}}' http://localhost:8983/solr/mycore/schema

curl -XPOST -H 'Content-type:application/json' --data-binary '{
  "add-field":{
    "name":"coords",
    "type":"mypoint",
    "stored":true,
    "indexed":true
  }
}' http://localhost:8983/solr/mycore/schema

2) post 数据

curl -X POST -H 'Content-Type: application/json' --data-binary '{
  "id": "1",
  "coords": "1.5 -0.2222 14213 here I can use my n-dimensional point?",
}' http://localhost:8983/solr/mycore/update/json/docs

3) 查询点范围或距离

???  I don't know how to do this.

更新：我最终使用了 postgresql，它通过 cube 插件支持 k-d 树欧氏距离搜索。

截至撰写本文时，尚未实施。底层Lucene层有它。

https://issues.apache.org/jira/browse/SOLR-11077