Solrnet equivalent for frange in a facet query for Distance

Question

I have implemented Spatial Search and need to generate facets for ranges or 'buckets' of distance in Solr: the following link helped me here - http://wiki.apache.org/solr/SpatialSearch#How_to_facet_by_distance

I found the solution to the following question Faceting on distance in solr- how to generate links that search withing a given range of distance helpful.

I am using Solrnet to generate Solr queries from my .NET based site. I cant find a link that would help me to generate a frange part (italicized) of the query as below. Please help in pointing me to the code to generate this using solrnet.

&q=:&sfield=store&pt=45.15,-93.85**&facet.query={!frange l=0 u=5}geodist()&facet.query={!frange l=5.001 u=3000}geodist()**.

Answer 1

I am assuming that you are already using ExtraParams to set the sField & pt parameters. You should be able to add the facet.query parameters to this as well.

var results = solr.Query(SolrQuery.All, new QueryOptions
{
    ExtraParams = new Dictionary<string, string> {
                { "sfield", "store" } , 
                { "pt", "45.15,-93.85" }
                { "facet.query", "{!frange l=0 u=5}geodist()" } ,
                { "facet.query", "{!frange l=5.001 u=3000}geodist()" } ,
            }
 });

return results;

Additionally, you might be able to use SolrFacetQuery combined with LocalParams to build the facet queries. Check the following links for some examples:

• https://code.google.com/p/solrnet/wiki/Facets
• How to add Spatial Solr to a Solrnet query

Update: As stated in the comments, the use of the ExtraParams does not work because it is a dictionary object and as a result does not allow for multiple facet.query parameters. However, I was able to use the Facet Queries as described in the SolrNet Facet Wiki page linked above to create the following:

var facet1 = new SolrFacetQuery(new SolrQuery("{!frange l=0 u=5}geodist()}"));
var facet2 = new SolrFacetQuery(new SolrQuery("{!frange l=5.001 u=3000}geodist()}"));
var results = solr.Query(SolrQuery.All, new QueryOptions
    {
        ExtraParams = new Dictionary<string, string>
            {
                {"sfield", "store"},
                {"pt", "45.15,-93.85"}
            },
        Facet = new FacetParameters
            {
                Queries = new[]
                    {
                        facet1, facet2
                    }
            }
    });
return results;