Can you use a filter agg?
http://www.elasticsearch.org/guide/en/elasticsearch/reference/current/search-aggregations-bucket-filter-aggregation.html
David
> Le 26 janv. 2015 à 09:46, Radim Novotny <novotny.ra...@gmail.com> a écrit :
>
> Hi,
>
> I'm using ES 1.4.2 to search across 4 slightly different types in a single
> index. The following example is simplified version with only two types
> "profile" and "publication". Profiles can have related publications,
> publications can have related profiles.
>
> I want to do a full text search (single search field) across all content
> indexed in an index, preferring most related ones, of course, but increasing
> score if profile has a lot of publications (so it is important person,
> because is very active and should be preferred
> in search results).
> I want to display the search results grouped by _type (see by_type
> aggregation) so I'm using terms aggregation and top_hits sub aggregation with
> optional pagination (from, size). I want to show how many results is in every
> department (people and publications always belongs to a single department)
>
> This works quite good. I can display aggregation by department for example:
> Department 1 (100 results), Department 2 (50 results) and I can group results
> by type: Profiles (60) Publications (90) and display for example 10 top hits
> for every type. That's perfect.
>
> Now it comes to filtering. For example (simple case) I want to filter only
> results from Department 1. I can do that quite easily using the filtered
> query, but when I do that, The result is:
>
> Department 1 (100 results), Department 2 (0 results)
>
> Ok, that's wrong. Let's use post_filter... The problem is, post filter
> written this way:
> {
> "size": 10,
> "query": {
> ....
> },
> "post_filter": {
> "and": [
> {"match_all": {}}
> ]
> },
> "aggs": {
> ...
> }
> }
>
> is not applied as it does not filter top_hits results but the "global"
> results. post_filter is not supported by top_hits aggregation.
>
> My use case is a bit more complicated. I want to filter by publication_type,
> for example (in this case only Publications will be in result set, of
> course), but I still want to display number of results in unfiltered (but
> queried) set. Like: "If you tick this checkbox, you will get another 50
> results to the same query".
>
> Hope my problem is clearly described.
>
> Finally my question:
> Is there any way how to solve this situation? How to apply a post_filter to
> top_hits? If I remove top_hits aggregation and aggregate in client it might
> easily come out there will be
> 1 profile displayed and 9 publications (if size would be set to 10). I want
> to display 10 profiles and 10 publications with a pagination.
> Maybe I'm doing it wrong and there is a better way how to achieve my
> requirements.
>
> Example index setup, example data and my query:
> https://gist.github.com/naro/3ad9a1c85f03c631e02a
>
> Thanks,
> Radim
>
>
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