ruby-on-rails – 非关键字搜索的Solr(太阳黑子)查询时间提升

@solr_search = User.solr_search do
  paginate(:per_page => 20)
  with(:has_email,true)

  any_of do      
    with(:id).any_of(co_author_ids)        
    with(:hospitals_id).any_of(hopital_ids)
  end
end

由于co_author_ids是一个多值密钥,我有足够的理由相信没有办法实现这一点.虽然使用单值键,但可以通过使用函数查询使用solr排序来实现此级联效果. http://wiki.apache.org/solr/FunctionQuery#Sort_By_Function aong with adjust_solr-params http://sunspot.github.io/docs/Sunspot/DSL/Adjustable.html

例：
假设您有这样的查询：

@solr_search = User.solr_search do
  paginate(:per_page => 20)
  with(:has_email,true)
  any_of do      
    with(:id,author_id) #assuming author id is a solr index        
    with(:hospitals_id).any_of(hopital_ids)
  end
end

现在在这种情况下你想要一个级联效果,并希望更多地优先考虑与author_id完全匹配,你可以这样做

@solr_search = User.solr_search do
  paginate(:per_page => 20)
  with(:has_email,author_id) #assuming author id is a solr index        
    with(:hospitals_id).any_of(hopital_ids)
  end
  adjust_solr_params do |p|
    p["sort"] = "if(author_id_i = #{id},1,0) desc" #note author_id_i solr eq of author_id
  end  
end

因此,这将基于if(author_id_i =#{id},0)的值进行排序,并且作为回报,将把auhtor_id的所有记录与用户的顶部相同.

我不知何故使用IF函数遇到问题所以我改为使用(实际上它们都是相同的)：

@solr_search = User.solr_search do
  paginate(:per_page => 20)
  with(:has_email,author_id) #assuming author id is a solr index        
    with(:hospitals_id).any_of(hopital_ids)
  end
  adjust_solr_params do |p|
    p[:sort] = "min(abs(sub(author_id_i,#{id})),1) asc" 
  end  
end

我也偶然发现了http://wiki.apache.org/solr/SpatialSearch,同时寻找一个解决方案,如果你想按距离排序,你可以这样做：

@solr_search = User.solr_search do
  paginate(:per_page => 20)
  with(:has_email,author_id) #assuming author id is a solr index        
    with(:hospitals_id).any_of(hopital_ids)
  end
    adjust_solr_params do |p|
      p[:pt] = "#{latitude_of_your_interest},#{longitude_of_your_interest}"
      p[:sfield] = :author_location #your solr index which stores location of the author
      p[:sort] = "geodist() asc"
    end
end

总的来说,我会说你可以用p [“sort”]做很多很酷的事情但是在这种特殊情况下它不能完成(imho)因为它是一个多值字段
例如：
Using multivalued field in map function
Solr function query that operates on count of multivalued field

我希望他们可以为多值字段提供一个包含函数,我们可以写
p [“sort”] =“if(include(co_authors_ids,#{id}),0)desc”

但截至目前,这是不可能的(再次imho).