Re: Use case of Spatial search
I think you can do this by a combination of standard function queries, see: http://wiki.apache.org/solr/FunctionQuery#if and geodist, see: http://wiki.apache.org/solr/SpatialSearch#geodist_-_The_distance_function WARNING: I haven't tried this myself, but it seems like it would work. The trick is to have your function return 0 for docs you want to exclude. Since that's multiplied into the score, you effectively eliminate the doc from your result set. Best, Erick On Mon, Aug 19, 2013 at 8:53 AM, Shishir Jain shishir.j...@gmail.comwrote: Hi, I have a very standard use case of Spatial search. Was trying to figure out how to do it in Solr, but couldn't figure out a standard way of doing it. Please point me to any document which explains this use case or how this specific use case can be implemented in Solr. The Use case is: There is database of Food Joints who deliver food. Each of them have a different serving distance. So, when a user is requesting for a list of food joints which can serve at his/her location, it needs to find the distance between the user and food joint and the distance served by each of these joints and if the distance between the user and the food joint is less than the distance served, return the list. The geo co-ordiantes of the food joint and the radius of the distance served is pre-known and stored in the solr Now I'm trying to get this list directly from solr, but couldn't find any way. Please let me know if this use case is handled by Solr Spatial search and yes, how to do it. If no, what other Solr users have figured out as a work-around? Best regards, Shishir
Re: Use case of Spatial search
Shishir, Use the location_rpt type and index circles of the business and the distance they serve with this syntax: field name=myfieldNameCircle(lat,lon d=degreesRadius)/field Your query shape is then simply a point; use bbox query parser with d=0. This approach should scale *great* at query time. Erick suggesting using function queries for filtering, which could work but the worse-case performance can be bad (e.g. no other filtering and tons of data). ~ David p.s. I'm on vacation so I'm not very responsive and my replies are less descriptive Shishir Jain wrote Hi, I have a very standard use case of Spatial search. Was trying to figure out how to do it in Solr, but couldn't figure out a standard way of doing it. Please point me to any document which explains this use case or how this specific use case can be implemented in Solr. The Use case is: There is database of Food Joints who deliver food. Each of them have a different serving distance. So, when a user is requesting for a list of food joints which can serve at his/her location, it needs to find the distance between the user and food joint and the distance served by each of these joints and if the distance between the user and the food joint is less than the distance served, return the list. The geo co-ordiantes of the food joint and the radius of the distance served is pre-known and stored in the solr Now I'm trying to get this list directly from solr, but couldn't find any way. Please let me know if this use case is handled by Solr Spatial search and yes, how to do it. If no, what other Solr users have figured out as a work-around? Best regards, Shishir - Author: http://www.packtpub.com/apache-solr-3-enterprise-search-server/book -- View this message in context: http://lucene.472066.n3.nabble.com/Use-case-of-Spatial-search-tp4085430p4085592.html Sent from the Solr - User mailing list archive at Nabble.com.
