+
+ public static Stream<Resource> findDNElementsById(ReadGraph graph, Resource context, String idToFind) throws DatabaseException {
+ DistrictNetworkResource DN = DistrictNetworkResource.getInstance(graph);
+ return IndexUtils.findByType(graph,
+ graph.syncRequest(new IndexRoot(context)),
+ DN.Element
+ ).stream().filter(element -> {
+ try {
+ String id = graph.getPossibleRelatedValue(element, DN.HasId, Bindings.STRING);
+ return id != null && id.contains(idToFind);
+ } catch (DatabaseException e) {
+ LOGGER.error("Could not read id for element {]", element, e);
+ return false;
+ }
+ });
+ }
+
+ public static Resource findDNElementById(ReadGraph graph, Resource context, String idToFind) throws DatabaseException {
+ List<Resource> elements = findDNElementsById(graph, context, idToFind).collect(Collectors.toList());
+ if (elements.size() == 1) {
+ return elements.iterator().next();
+ }
+ return null;
+ }
+
+ public static List<Resource> findDNElementByXYCoordinates(ReadGraph graph, Resource context, double lat, double lon, double padding) throws DatabaseException {
+ DistrictNetworkResource DN = DistrictNetworkResource.getInstance(graph);
+ DiagramResource DIA = DiagramResource.getInstance(graph);
+ List<Resource> results = new ArrayList<>();
+ Collection<Resource> vertices = IndexUtils.findByType(graph, graph.syncRequest(new IndexRoot(context)), DN.Vertex);
+ Rectangle2D rect = new Rectangle2D.Double(lat, lon, padding, padding);
+ for (Resource vertex : vertices) {
+ double[] location = graph.getRelatedValue(vertex, DIA.HasLocation, Bindings.DOUBLE_ARRAY);
+ if (rect.contains(location[0], location[1])) {
+ results.add(vertex);
+ }
+ }
+ return results;
+ }