Example usage for org.apache.solr.common.params SpatialParams DISTANCE

Introduction

In this page you can find the example usage for org.apache.solr.common.params SpatialParams DISTANCE.

Prototype

String DISTANCE

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Usage

From source file:org.eclipse.rdf4j.sail.solr.SolrIndex.java

License:Open Source License

@Override
protected Iterable<? extends DocumentDistance> geoQuery(URI geoProperty, Point p, final URI units,
        double distance, String distanceVar, Var contextVar) throws MalformedQueryException, IOException {
    double kms = GeoUnits.toKilometres(distance, units);

    String qstr = "{!geofilt score=recipDistance}";
    if (contextVar != null) {
        Resource ctx = (Resource) contextVar.getValue();
        String tq = termQuery(SearchFields.CONTEXT_FIELD_NAME, SearchFields.getContextID(ctx));
        if (ctx != null) {
            qstr = tq + " AND " + qstr;
        } else {//from   w w w  .j a v  a  2s. c  o  m
            qstr = "-" + tq + " AND " + qstr;
        }
    }
    SolrQuery q = new SolrQuery(qstr);
    q.set(SpatialParams.FIELD, SearchFields.getPropertyField(geoProperty));
    q.set(SpatialParams.POINT, p.getY() + "," + p.getX());
    q.set(SpatialParams.DISTANCE, Double.toString(kms));
    q.addField(SearchFields.URI_FIELD_NAME);
    // ':' is part of the fl parameter syntax so we can't use the full
    // property field name
    // instead we use wildcard + local part of the property URI
    q.addField("*" + geoProperty.getLocalName());
    // always include the distance - needed for sanity checking
    q.addField(DISTANCE_FIELD + ":geodist()");
    boolean requireContext = (contextVar != null && !contextVar.hasValue());
    if (requireContext) {
        q.addField(SearchFields.CONTEXT_FIELD_NAME);
    }

    QueryResponse response;
    try {
        response = search(q);
    } catch (SolrServerException e) {
        throw new IOException(e);
    }

    SolrDocumentList results = response.getResults();
    return Iterables.transform(results, new Function<SolrDocument, DocumentDistance>() {

        @Override
        public DocumentDistance apply(SolrDocument document) {
            SolrSearchDocument doc = new SolrSearchDocument(document);
            return new SolrDocumentDistance(doc, units);
        }
    });
}

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