https://lucene.apache.org/solr/guide/7_2/other-parsers.html
fq={!frange l=0}your(complex(func(fieldA,fieldB),fieldC))
As of 7.2, frange filters will default to being PostFilters as long as
you use cache=false ...
https://lucidworks.com/2017/11/27/caching-and-filters-and-post-filters/
https://issues.apache.org/jira/browse/SOLR-11641
: Date: Tue, 12 Dec 2017 12:15:55 +0000
: From: Markus Jelsma <markus.jel...@openindex.io>
: Reply-To: solr-user@lucene.apache.org
: To: "solr-user@lucene.apache.org" <solr-user@lucene.apache.org>
: Subject: RE: Pass field value through function for filtering
:
: Forget about it, i just remember PostFilters!
:
: Thanks!
: Markus
:
: -----Original message-----
: > From:Markus Jelsma <markus.jel...@openindex.io>
: > Sent: Tuesday 12th December 2017 12:54
: > To: Solr-user <solr-user@lucene.apache.org>
: > Subject: Pass field value through function for filtering
: >
: > Hello,
: >
: > I have a function and a lot of documents, i want to select all documents
that give a certain value when i pass a document's field through the function,
i just want to filter by function, how?
: >
: > I am thinking of implementing Collector. Get the docId, make a field
look-up and discard if it doesn't pass my function. But i remember from quite
some time ago, that doing field look-ups there would be expensive.
: >
: > Although i don't mind it taking some time (it is for batched work behind
our scenes), do you have suggestions?
: >
: > Also, the last time i had to use a custom collector, i had to hack it into
SolrIndexSearcher to use it. Is there any proper way to use a custom collector
these days?
: >
: > Many thanks,
: > Markus
: >
:
-Hoss
http://www.lucidworks.com/
