Maybe NormsFieldExistsQuery as a MUST_NOT clause? Though, you must enable norms on your field to use that.
TermRangeQuery is indeed a horribly costly way to execute this, but if you cache the result on each refresh, perhaps it is OK? You could also index a dedicated doc values field indicating that the field empty and then use DocValuesFieldExistsQuery. Mike McCandless http://blog.mikemccandless.com On Fri, Nov 13, 2020 at 7:56 AM Rob Audenaerde <rob.audenae...@gmail.com> wrote: > Hi all, > > We have implemented some security on our index by adding a field > 'groups_allowed' to documents, and wrap a boolean must query around the > original query, that checks if one of the given user-groups matches at > least one groups_allowed. > > We chose to leave the groups_allowed field empty when the document should > able to be retrieved by all users, so we need to also select a document if > the 'groups_allowed' is empty. > > What would be the faster Query construction to do so? > > > Currently I use a TermRangeQuery that basically matches all values and put > that in a MUST_NOT combined with a MatchAllDocumentQuery(), but that gets > rather slow then the number of groups is high. > > Thanks! >
