Hello Mikhail Thank you for the fast reply, please find my answers inline.
On Tue, Jan 3, 2012 at 11:00 PM, Mikhail Khludnev < mkhlud...@griddynamics.com> wrote: > Hello, > > Please find my thoughts below. > > On Wed, Jan 4, 2012 at 12:39 AM, Maxim Veksler <ma...@vekslers.org> wrote: > > > > Hello, > > > > I've started to evaluate Solr and so far haven't seen anything mentions > for > > support of compound indexes. > > If I get you right, it doesn't. AFAIK It combines separate indexes > basing on the condensed internal ids aka docNums > > > > > I'm looking to either radius or share based geospatial proximity queries > > (find all document that are 20km from given lat,lng) > > http://wiki.apache.org/solr/SpatialSearch#geofilt_-_The_distance_filter > consider https://issues.apache.org/jira/browse/SOLR-2155 if you are > dealing with multivalue coordinates. > > Thank you for the reference to SOLR-2155. I've studied geohash[1] and the work David Smiley[2] is doing[3] for Solr 4 thoroughly. I think that my problem is simpler - I don't need multivalue coordinates support because my locations are represented by a single lat,lng point and I will be searching for all the points that fall into my defined radius. Where there is a 1:1 mapping between a document and the point it is categorized by. > I would also at times be doing geo queries bonded with another term (for > > ex. "house rooms" = 5). > > just add separate ...&fq=H_ROOMS:5&... > http://wiki.apache.org/solr/CommonQueryParameters#fq > > > > > > > My aim is to do very fast queries against the indexed data. I have no > real > > constraints on the time it would take to build this index. > > > > Does Solr support building and index on the 2 types of fields lat,lng & > > "house rooms" ? > Sure. It sounds like intersecting fqs. > > Wonderful to hear this, guess I'm no really understanding how Solr / Lucene works then. Could you please reference me or explain how Solr builds it's index? I'm especially interested in how the search is implemented under the hood - Given geo & "plular" terms what would lucene do? How would it do the actual searching / or perhaps what I need to be asking is what & how the "intersecting fqs" are implemented? I apologize for the messy question, I'm only starting to understand Lucene. Please let me know if it works for you. > > > > > > > Thank you, > > Maxim. > > [1] http://gis.stackexchange.com/questions/18330/would-it-be-possible-to-use-geohash-for-proximity-searches [2] http://www.basistech.com/pdf/events/open-source-search-conference/oss-2011-smiley-geospatial-search.pdf [3] http://code.google.com/p/lucene-spatial-playground/
