I've consulted regarding this case. This is not an issue, you may bring facet back adding not yet documented property processEmpty:true
On Mon, Feb 18, 2019 at 10:42 AM Mikhail Khludnev <[email protected]> wrote: > Hello, > I'm not sure but it sounds like an issue, would you mind to raise one at > https://issues.apache.org/jira/projects/SOLR/ ? > > On Sun, Feb 17, 2019 at 6:57 PM Arvydas Silanskas < > [email protected]> wrote: > >> Good evening, >> >> I am using facet json api to query aggregation data, and I don't care >> about >> the returned documents themselves. One of the use cases I want to employ >> is >> tagging filter queries for fields, and then exclude those filters when >> faceting. My problem is, however, that in those cases where the filter has >> 0 matches, the facets aren't calculated at all. >> >> I'm using dataset I found at >> https://www.raspberry.nl/2010/12/29/solr-test-dataset/ . To illustrate -- >> this is an an example when filter doesn't filter out everything (working >> as >> expected): >> >> Request: >> { >> "query": "*:*", >> "facet": { >> "latitude_f": { >> "type": "range", >> "start": -90, >> "facet": { >> "population": "sum(population_i)" >> }, >> "domain": { >> "excludeTags": "latitude_f" >> }, >> "gap": 10, >> "end": -70, >> "field": "latitude_f" >> } >> }, >> "limit": 0, >> "filter": [ >> "{!tag=latitude_f}latitude_f:[-80.0 TO -70.0]" >> ] >> } >> >> Response: >> >> { >> "facets": { >> "count": 1, >> "latitude_f": { >> "buckets": [ >> { >> "val": -90, >> "count": 0 >> }, >> { >> "val": -80, >> "count": 1, >> "population": 1258 >> } >> ] >> } >> } >> } >> >> >> Example when filter filters everything out: >> >> Request is the same, except the filter field value is >> >> "filter": [ >> "{!tag=latitude_f}latitude_f:[-90.0 TO -80.0]" >> ] >> >> and response is >> >> "facets":{ >> "count":0} >> >> . I'm returned no facets whatsoever. However I'd expect the response to be >> the same as and for the first request, since the only one filter is used, >> and is excluded in faceting. >> >> Is this a bug? What are the workarounds for such problem? >> > > > -- > Sincerely yours > Mikhail Khludnev > -- Sincerely yours Mikhail Khludnev
