Examples with DWithinImpl org.geotools.filter.spatial.DWithinImpl used on opensource projects

Example 1 with DWithinImpl

use of org.geotools.filter.spatial.DWithinImpl in project ddf by codice.

the class OpenSearchQueryTest method testSpatialDistanceFilter.

@Test
public void testSpatialDistanceFilter() throws Exception {
    String lon = "10";
    String lat = "20";
    String radius = "5000";
    OpenSearchQuery query = new OpenSearchQuery(null, 0, 10, "relevance", "desc", 30000, FILTER_BUILDER);
    query.addSpatialDistanceFilter(lon, lat, radius);
    Filter filter = query.getFilter();
    // String filterXml = getFilterAsXml( filter );
    VerificationVisitor verificationVisitor = new VerificationVisitor();
    filter.accept(verificationVisitor, null);
    HashMap<String, FilterStatus> map = (HashMap<String, FilterStatus>) verificationVisitor.getMap();
    List<Filter> filters = getFilters(map, DWithinImpl.class.getName());
    assertEquals(1, filters.size());
    DWithinImpl dwithinFilter = (DWithinImpl) filters.get(0);
    // The geometric point is wrapped in a <Literal> element, so have to
    // get geometry expression as literal and then evaluate it to get the
    // geometry.
    // Example:
    // <ogc:Literal>org.geotools.geometry.jts.spatialschema.geometry.primitive.PointImpl@dc33f184</ogc:Literal>
    Literal literalWrapper = (Literal) dwithinFilter.getExpression2();
    // Luckily we know what type the geometry expression should be, so we can cast it
    PointImpl point = (PointImpl) literalWrapper.evaluate(null);
    double[] coords = point.getCentroid().getCoordinate();
    LOGGER.debug("coords[0] = {},   coords[1] = {}", coords[0], coords[1]);
    assertEquals(Double.parseDouble(lon), coords[0], DOUBLE_DELTA);
    assertEquals(Double.parseDouble(lat), coords[1], DOUBLE_DELTA);
    LOGGER.debug("dwithinFilter.getDistance() = {}", dwithinFilter.getDistance());
    assertEquals(Double.parseDouble(radius), dwithinFilter.getDistance(), DOUBLE_DELTA);
}