[JSON Faceting] Domain filter query

[Alessandro Benedetti <ab...@apache.org>]

Hi guys,
was thinking to this problem :

Given a set of flat documents I want to calculate facets on :
1) flat results set
2) collapsed result set

Specifically some of my field facets will need to be on the flat results
set and some of them will need to be calculated over a collapsed result set
( you can immagine collapsed on one specific field).

I know that this ideally can be solve restructuring the index in a nested
object model and I agree that would be a good approach to address this
problem ( as the nesting structure can be useful to solve other problems as
well)

Let's assume I don't want to change at all my schema.
Is there a way to specify for some facet a domain ( the collapse filter
query), while for others not ?
I was taking a look to this : http://yonik.com/facet-domains/ which is
conceptually similar to what I am describing but at the moment does not
support a flexible use case ( taking in input a random filter query) .

A naive solution would be to run 2 separates Solr queries ( one collapsed
and one not).
But let's explore other ideas !

Cheers



-- 
--------------------------

Benedetti Alessandro
Visiting card : http://about.me/alessandro_benedetti

"Tyger, tyger burning bright
In the forests of the night,
What immortal hand or eye
Could frame thy fearful symmetry?"

William Blake - Songs of Experience -1794 England

Re: [JSON Faceting] Domain filter query

[Alessandro Benedetti <ab...@apache.org>]

mmmm another solution that jumped to my mind is to use stats :

Given the field : product_id to be the collapsing field.

For the facet i want the collapsed count I can do something like :

{
  brands:{
    terms : {  // terms facet creates a bucket for each indexed term in the
field
      field : brand,
      sort : "uniqueProducts desc",
      facet : {
        uniqueProducts : "unique(product_id)"
      }
    }
  }
}
I will try it for curiousity!

Cheers

On Thu, Sep 8, 2016 at 9:45 AM, Alessandro Benedetti <ab...@apache.org>
wrote:

> Hi guys,
> was thinking to this problem :
>
> Given a set of flat documents I want to calculate facets on :
> 1) flat results set
> 2) collapsed result set
>
> Specifically some of my field facets will need to be on the flat results
> set and some of them will need to be calculated over a collapsed result set
> ( you can immagine collapsed on one specific field).
>
> I know that this ideally can be solve restructuring the index in a nested
> object model and I agree that would be a good approach to address this
> problem ( as the nesting structure can be useful to solve other problems as
> well)
>
> Let's assume I don't want to change at all my schema.
> Is there a way to specify for some facet a domain ( the collapse filter
> query), while for others not ?
> I was taking a look to this : http://yonik.com/facet-domains/ which is
> conceptually similar to what I am describing but at the moment does not
> support a flexible use case ( taking in input a random filter query) .
>
> A naive solution would be to run 2 separates Solr queries ( one collapsed
> and one not).
> But let's explore other ideas !
>
> Cheers
>
>
>
> --
> --------------------------
>
> Benedetti Alessandro
> Visiting card : http://about.me/alessandro_benedetti
>
> "Tyger, tyger burning bright
> In the forests of the night,
> What immortal hand or eye
> Could frame thy fearful symmetry?"
>
> William Blake - Songs of Experience -1794 England
>



-- 
--------------------------

Benedetti Alessandro
Visiting card : http://about.me/alessandro_benedetti

"Tyger, tyger burning bright
In the forests of the night,
What immortal hand or eye
Could frame thy fearful symmetry?"

William Blake - Songs of Experience -1794 England