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LocalSolr is a port of locallucene to a solr implementation
Supprt for radial searching, and sort by distance is provided

Detail on usage are available from http://locallucene.wiki.sourceforge.net/


LocalSolr uses a line of sight algorithm with cartesian plotting to perform
quick geographical searching. This uses the latest locallucene functionality.

There are 2 ways of getting localsolr

Downloading the demo
==========================

Available from http://www.nsshutdown.com/solr-example.tgz (linked to the most
recent demo)
Details on using it are available 
http://www.nsshutdown.com/blog/index.php?itemid=87

Or

Building from source
======================
Requires ant, jdk 1.5
Solr from http://lucene.apache.org/solr/

Compile locallucene from http://sourceforge.net/projects/locallucene/

Solr & Lucene dependancies are available in the libs directory

Run: ant -f build.xml

This will create dist/localsolr.jar

Using a standard solr build, drop locallucene.jar & localsolr.jar
in the solr/lib directory.


Configuring localsolr
======================
Ensure locallucene.jar and localsolr.jar are available in the solr/lib
directory.


Edit solr/conf/solrconfig.xml

** Configure Indexer
  <updateRequestProcessor>
    <factory name="standard" class="solr.ChainedUpdateProcessorFactory" default="true">
      <chain class="com.pjaol.search.solr.update.LocalUpdateProcessorFactory">
        <str name="latField">lat</str>
        <str name="lngField">lng</str>
        <int name="startTier">9</int>
        <int name="endTier">17</int>
      </chain>
      <chain class="solr.LogUpdateProcessorFactory" >
       <!-- <int name="maxNumToLog">100</int> -->
      </chain>
      <chain class="solr.RunUpdateProcessorFactory" />
    </factory>
  </updateRequestProcessor>
  
** Configure the query handler (query template)
<!-- local lucene request handler -->
<searchComponent name="localsolr"     class="com.pjaol.search.solr.component.LocalSolrQueryComponent2" />
<requestHandler name="geo" class="org.apache.solr.handler.component.SearchHandler">
    <arr name="components">
      <str>localsolr</str>
      <str>facet</str>
      <str>mlt</str>
      <str>highlight</str>
      <str>debug</str>
    </arr>
</requestHandler>  

Edit solr/conf/schema.xml
** Configure geographical fields
<!-- local lucene field types -->
   <field name="lat" type="sdouble" indexed="true" stored="true"/>
   <field name="lng" type="sdouble" indexed="true" stored="true"/>
   <dynamicField name="_local*" type="sdouble" indexed="true" stored="true"/>
   
 
 The _local* fields can be turned to stored="false" if you don't want
 these generated fields to be displayed. Other wise you could potentially
 use them to find density of results in an area.
  
 Making a request to localsolr
 =============================
 /solr/select?&qt=geo&lat=xx.xx&long=yy.yy&q=abc&radius=zz
 
 qt query template configured in the solrconfig.xml in this example it's 'geo'
 lat latitude in degrees
 long longitude in degrees
 q solr query
 radius in miles.