How to return distance and score in spatial search using spring-data-solr

Question

I\'m writing a Spring MVC based Search API using spring-data-solr 1.0.0.RELEASE with Solr 4.4.0 and Spring 3.2.4.RELEASE.

I\'m able to run basic queries but unable t

Answer 1

To set fl you have to use query.addProjectionOnField(String fieldname).

    SimpleQuery query = new SimpleQuery(conditions);
    query.addProjectionOnField("*");
    query.addProjectionOnField("score");

For mapping score into EventDocument you'll have to add the property as follows.

    @Indexed(value = "score", readonly = true)
    private Float score;

Unfortunately there seems to be an issue with geodist() that might be caused by the way spring data solr creates spatial query. Opended DATASOLR-130 for that.

---

Distance can be requested using SolrCallback along with SolrTemplate by setting spatial paramters yourself.

    SimpleQuery query = new SimpleQuery(conditions);
    query.addProjectionOnField("*");
    query.addProjectionOnField("distance:geodist()");

    DefaultQueryParser qp = new DefaultQueryParser();
    final SolrQuery solrQuery = qp.constructSolrQuery(query);
    solrQuery.add("sfield", "store");
    solrQuery.add("pt", GeoConverters.GeoLocationToStringConverter.INSTANCE.convert(new GeoLocation(45.15, -93.85)));
    solrQuery.add("d", GeoConverters.DistanceToStringConverter.INSTANCE.convert(new Distance(5)));

    List<EventDocument> result = template.execute(new SolrCallback<List<EventDocument>>() {

      @Override
      public List<EventDocument> doInSolr(SolrServer solrServer) throws SolrServerException, IOException {
        return template.getConverter().read(solrServer.query(solrQuery).getResults(), EventDocument.class);
      }
    });

A litte bit easier would be to provide required parameters for geodist().

    SimpleQuery query = new SimpleQuery(conditions);
    query.addProjectionOnField("*");
    query.addProjectionOnField("distance:geodist(store," + GeoConverters.GeoLocationToStringConverter.INSTANCE.convert(new GeoLocation(45.15, -93.85)) + ")");
    Page<EventDocument> result = template.queryForPage(query, EventDocument.class);

hope that helps!