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

java, solr, solrj, spring-data-solr, spring-mvc

Solution

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!

Problem

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 to find any good example how can I return score and distance:geodist() in the results. I know I can get results from Solr using query like ``` http://localhost:8983/solr/events/select?q=*:*&spatial=true&pt=51.435872%2C-0.427529&sfield=position&d=20&facet=true&facet.mincount=1&facet.limit=-1&facet.field=categoryIds&fl=score,*,distance:geodist()&sort=geodist()+asc ``` but I don't know how to get score and distance properties returned from Solr using spring-data-solr. I have tried following code ``` FacetQuery search = new SimpleFacetQuery(); Criteria conditions;// = new Criteria(); if(StringUtils.isNotBlank(searchCriteria.getSearchString())) conditions = new Criteria(EventDocument.FIELD_EVENT).contains(searchCriteria.getSearchString()); if(searchCriteria.isLocationKnown()){ conditions.and(new Criteria(EventDocument.FIELD_POSITION).within(new GeoLocation(searchCriteria.getLatitude(), searchCriteria.getLongitude()), new Distance(searchCriteria.getDistance(), Distance.Unit.MILES))); conditions.and(new Criteria(CommonParams.FL).is("score,distance:geodist(),*")); } else{ conditions.and(new Criteria(CommonParams.FL).is("score,*")); } search.addCriteria(conditions); FacetPage page = solrTemplate.queryForFacetPage(search, EventDocument.class); ``` but getting following Exception: ``` org.springframework.web.util.NestedServletException: Request processing failed; nested exception is org.springframework.data.solr.UncategorizedSolrException: undefined field fl; nested exception is org.apache.solr.client.solrj.impl.HttpSolrServer$RemoteSolrException: undefined field fl org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:948) org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:827) javax.servlet.http.HttpServlet.service(HttpServlet.java:621) org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:812) javax.servlet.http.HttpServlet.service(HttpServlet.java:728) root cause org.springframework.data.solr.UncategorizedSolrException: undefined field fl; nested exception is org.apache.solr.client.solrj.impl.HttpSolrServer$RemoteSolrException: undefined field fl org.springframework.data.solr.core.SolrTemplate.execute(SolrTemplate.java:122) org.springframework.data.solr.core.SolrTemplate.executeSolrQuery(SolrTemplate.java:330) org.springframework.data.solr.core.SolrTemplate.query(SolrTemplate.java:326) org.springframework.data.solr.core.SolrTemplate.queryForFacetPage(SolrTemplate.java:285) com.johnstonpress.api.repository.EventDocumentRepositoryImpl.search(EventDocumentRepositoryImpl.java:72) com.johnstonpress.api.service.SearchEventServiceImpl.search(SearchEventServiceImpl.java:106) com.johnstonpress.api.controller.EventsSearchController.searchEvents(EventsSearchController.java:124) com.johnstonpress.api.controller.EventsSearchController.search(EventsSearchController.java:68) sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) java.lang.reflect.Method.invoke(Method.java:601) org.springframework.web.method.support.InvocableHandlerMethod.invoke(InvocableHandlerMethod.java:219) org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:132) org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:104) org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandleMethod(RequestMappingHandlerAdapter.java:745) org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:686) org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:80) org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:925) org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:856) org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:936) org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:827) javax.servlet.http.HttpServlet.service(HttpServlet.java:621) org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:812) javax.servlet.http.HttpServlet.service(HttpServlet.java:728) ``` Thanks for any attention and help!!!

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