弹性搜索嵌套 [英] Elastic Search nested

问题描述

我正在通过轮胎宝石进行弹性搜索.

I'm using Elastic search through tire gem.

给出此结构以索引我的资源模型

Given this structure to index my resource model

mapping do
  indexes :_id
  indexes :version,             analyzer: 'snowball', boost: 100 
  indexes :resource_files do
    indexes :_id
    indexes :name,                analyzer: 'snowball', boost: 100
    indexes :resource_file_category do
      indexes :_id
      indexes :name,                analyzer: 'snowball', boost: 100
    end
  end
end

如何检索具有具有给定resource_file_category ID的resource_files的所有资源?

How can i retrieve all the resources that have resource_files with a given resource_file_category id?

我看过弹性搜索文档，我认为可能是使用has子过滤器 http://www.elasticsearch.org/guide/reference/query-dsl/has-child-filter.html

i've looked in the elastic search docs and i think could be using the has child filter http://www.elasticsearch.org/guide/reference/query-dsl/has-child-filter.html

我已经尝试过这种方式

filter :has_child, :type => 'resource_files', :query => {:filter => {:has_child => {:type => 'resource_file_category', :query => {:filter => {:term => {'_id' => params[:resource_file_category_id]}}}}}}

但是我不确定是否可以/有效地制作一个嵌套的has_child过滤器"，或者是否有更好/更简单的方法来做到这一点...欢迎任何建议;)

but i'm not sure if is possible/valid to make a "nested has_child filter" or if is there a better/simpler way to do this... any advice is welcome ;)

推荐答案

恐怕我不知道您的映射定义是什么意思.如果您只发布以下输出，则更容易阅读:

I'm afraid I don't know what your mapping definition means. It'd be easier to read if you just posted the output of:

curl -XGET 'http://127.0.0.1:9200/YOUR_INDEX/_mapping?pretty=1' 

但是您可能想要这样的东西:

But you probably want something like this:

curl -XGET 'http://127.0.0.1:9200/YOUR_INDEX/YOUR_TYPE/_search?pretty=1'  -d '
{
   "query" : {
      "term" : {
         "resource_files.resource_file_catagory._id" : "YOUR VALUE"
      }
   }
}
'

注意: _id 字段可能应映射为 {"index":"not_analyzed"} ，以便不进行分析，而是存储准确的价值.否则，如果您对'FOO BAR'进行 term 查询，则不会找到该文档，因为存储的实际术语为: ['foo'，'bar']

Note: The _id fields should probably be mapped as {"index": "not_analyzed"} so that they don't get analyzed, but instead store the exact value. Otherwise if you do a term query for 'FOO BAR' the doc won't be found, because the actual terms that are stored are: ['foo','bar']

注意:查询用于搜索具有与某些搜索条件相匹配的子文档(即指定父类型和ID的文档)的父文档.

Note: The has_child query is used to search for parent docs who have child docs (ie docs which specify a parent type and ID) that match certain search criteria.

这篇关于弹性搜索嵌套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！