Spatial Search Plugin (SSP) for Solr
From the webpage:
With the continuous efforts of adjusting search results to focused target audiences, there’s an increasing demand for incorporating geographical location information into the standard search functionality. Spatial Search Plugin (SSP) for Apache Solr is a free, standalone plug-in which enables Geo / Location Based Search, and is built on top of the open source projects Apache Solr and Apache Lucene. It’s main goals and characteristics are:
- Provide a complete, consistent, robust and fast implementation of advanced geospatial algorithms
- Act as a standalone pluggable extension to Solr
- Written in 100% Java
- Compatible with Apache Solr and Apache Lucene
- Open source under the Apache2 license
- Well documented and comes with support
Location plus information about the location is a topic mappish sort of thing.