Deniz didn't mention document-to-document distance sort but he/she didn't say
it wasn't that case either.
Any way, FYI at the Lucene level with LatLonPoint there is some sophisticated
BKD search code to efficiently return the top N distance ordered documents
(where you supply N). Although as
deniz,
I was going to add something here. The reason what you want is probably
hard to do is because you are asking solr, which stores a document, to
return documents using an attribute of document pairs. As only a though
exercise, if you stored record pairs as a single document, you could
Would it serve to sort by distance? True, if you matched a zillion
documents within a 1km radius you'd still perform the distance calcs, but
the result would be a manageable number.
I have to ask "Why to you care?". Is this an efficiency question (i.e. you
want to keep Solr from having to do
it is for sure possible to use d value for limiting the distance, however, it
might not be very efficient, as some of the coords may not have any docs
around for a large value of d... so it is hard to determine a default value
for d.
though it sounds like havinga default d and gradual increments
As any other search you can paginate playing with the 'row' and 'start'
parameters ( or cursors if you want to go deep), show only the first K
results is your responsibility.
Is it not possible in your domain to identify a limit d ( out of that your
results will lose meaning ?)
You can not match
I am trying to figure out if it is possible to have the spatial search limit
itself based on the amount of docs rather than the distance...
What I want is, sth like "closest XXX documents from point(x,y)" in
dependent from "d" value in the query... would this need a custom plugin,
or there are
