SOLR-2155

SOLR-2155 copied to clipboard

Summary:

This is an old plug-in to Solr 3.x to add spatial filtering on multi-valued fields, and distance-sorting on these multi-valued fields as well. In Solr 4.x and beyond, you use the so-called "RPT" field type to get the same capabilities.

Author: David Smiley

You may find supplemental instructions online: http://wiki.apache.org/solr/SpatialSearch#SOLR-2155

Instructions:

First, you will need to build the jar file from source if the jar wasn't provided. This is as simple as running "mvn install" which generates a jar file: target/Solr2155-1.0.3.jar Put that on Solr's classpath similar to how other Solr contrib jars are installed.

Now edit some config files.

schema.xml: <fieldType name="geohash" class="solr2155.solr.schema.GeoHashField" length="12" />

    <field name="store" type="geohash" indexed="true" stored="true" multiValued="true"/>

solrconfig.xml: Top level within , suggested to place at bottom: <queryParser name="gh_geofilt" class="solr2155.solr.search.SpatialGeoHashFilterQParser$Plugin" /> <valueSourceParser name="geodist" class="solr2155.solr.search.function.distance.HaversineConstFunction$HaversineValueSourceParser" />

  Add the following cache into the <query> section if you are going to use the geodist function:
      <!-- SOLR-2155 -->
      <cache name="fieldValueCache"
        class="solr.FastLRUCache"
        size="10"
        initialSize="1"
        autowarmCount="1"/>
  Note that the name of this cache is unfortunate; it should have been something like "solr2155", and instead
  it is confusingly the same name as another cache although it is distinct from it.

At this point you can use Solr's {!geofilt}, {!bbox}, and {!geodist} as documented. You can also use {!gh_geofilt} like so: (args are in west,south,east,north order): fq={!gh_geofilt sfield=store box="-98,35,-97,36"} For further info on gh_geofilt, see the well-documented source.

CHANGES

1.0.5: * Fixed bug affecting sorting by distance when the index was not in an optimized state. * Norms are omitted automatically now; they aren't used.

1.0.4: Fixed bug in which geohashes were returned from Solr xml responses instead of lat,lon. Enhanced README.txt and Solr wiki.

1.0.3: * exception text for the absent sfield local param; * add cache enabling recommendation into README.txt (cache name is confusing a little) * fix for UnsupportedOpEx on debugQuery=on for geodist func (but my toString() impl seems overcomplicated)

1.0.2: (first public release)