After reading your scenario again, I have modified slightly my suggestion. You would still need to use a post filter since the facets need to work on set of documents that is greater than the set returned. You can apply the same post filter as a facet filter on the facet you want to reduce. Here is an example:
https://gist.github.com/brusic/8185134 -- Ivan On Mon, Dec 30, 2013 at 7:57 AM, Volker <s...@klest.de> wrote: > >Hopefully this makes sense. :) > > after reading through your provided links... not totally ;-) > > If I apply the selected facet before the the facet calculation, the facet > will count only elements, that are part of the result. That would mean, > that I would not get numbers for the not selected models (in this case no > numbers for bmw and ford). > > If I apply the selected facet as a post_filter, I will get the correct > numbers for the unselected models, but the facets for the color does not > represent the numbers for the selected model, but for all models. > > But probably I have not understood it, as it was meant. :-) > > Could you please elaborate further, how the query/filter for a selected > facet should be formulated? I have not found any example for this. If there > is one online, I would appreciate a link to that example. > > Kind regards > > > > Am Freitag, 27. Dezember 2013 18:58:13 UTC+1 schrieb Ivan Brusic: > >> Facets work on the documents returned by the query. This behavior will >> not work in your case since you would like to gather facets on a greater >> set of documents, not just the ones returned by the query. To solve this >> issue, elasticsearch provides a post filter, which affects the result >> document set, but not the set of documents that the facets work on. >> >> The term "filter" is a bit overloaded in elasticsearch, so the team >> renamed the post filter to a more explicit "post_filter": >> >> http://www.elasticsearch.org/guide/en/elasticsearch/ >> reference/current/search-request-post-filter.html >> https://github.com/elasticsearch/elasticsearch/issues/4119 >> >> The post filter documentation has some insight on how the filters affect >> the facets. In your case, you want a filtered query ( >> http://www.elasticsearch.org/guide/en/elasticsearch/ >> reference/current/query-dsl-filtered-query.html ) with the color as the >> filter, but the model filter will be applied as a post filter. Hopefully >> this makes sense. :) >> >> Cheers, >> >> Ivan >> >> >> On Fri, Dec 27, 2013 at 9:41 AM, Volker <s...@klest.de> wrote: >> >>> Dear Readers >>> >>> I have a question about facets and doing some filtering based on facets. >>> >>> In the moment I am using hibernate search in combination with bobobrowse >>> for facetting and I am thinking about switching to ES. But before that I >>> would like to check whether I can still get the same functionality. >>> >>> lets asume that I have an index about cars and some facets -- eg. model >>> and color. >>> >>> color >>> [ ] red (10) >>> [ ] blue (5) >>> [ ] green (2) >>> >>> model >>> [ ] bmw (4) >>> [ ] vw (5) >>> [ ] ford (8) >>> >>> if I select a model I would like to get only color facets for that >>> model, but I still would like to get facets for all models. eg: >>> >>> color >>> [ ] red (2) >>> [ ] blue (2) >>> [ ] green (1) >>> >>> model >>> [ ] bmw (4) >>> [x] vw (5) >>> [ ] ford (8) >>> >>> I have searched I did not find an example about this usecase. Is this >>> possible and if yes, how do I filter a query to get these results? >>> >>> Kind regards >>> >>> >>> >>> -- >>> You received this message because you are subscribed to the Google >>> Groups "elasticsearch" group. >>> To unsubscribe from this group and stop receiving emails from it, send >>> an email to elasticsearc...@googlegroups.com. >>> >>> To view this discussion on the web visit https://groups.google.com/d/ >>> msgid/elasticsearch/9d1f3008-aff2-4936-8e6c-7611734e7418% >>> 40googlegroups.com. >>> For more options, visit https://groups.google.com/groups/opt_out. >>> >> >> -- > You received this message because you are subscribed to the Google Groups > "elasticsearch" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to elasticsearch+unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/elasticsearch/2609a3ee-1124-4bc1-95e6-c6e7cdb06128%40googlegroups.com > . > > For more options, visit https://groups.google.com/groups/opt_out. > -- You received this message because you are subscribed to the Google Groups "elasticsearch" group. To unsubscribe from this group and stop receiving emails from it, send an email to elasticsearch+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/elasticsearch/CALY%3DcQC1i0wUL2gMVEt37PdZLNZXyTi7PTNGKUzDedR6Gpx-5w%40mail.gmail.com. For more options, visit https://groups.google.com/groups/opt_out.
