import java.awt.geom.Point2D;
+import org.simantics.databoard.Bindings;
import org.simantics.db.AsyncReadGraph;
import org.simantics.db.ReadGraph;
import org.simantics.db.Resource;
public class DistrictNetworkEdgeElementFactory extends SyncElementFactory {
public static final ElementClass CLASS = DistrictNetworkEdgeElement.CLASS;
-
+ public static final double[] EMPTY = new double[0];
+
private DistrictNetworkResource DN;
private DiagramResource DIA;
protected Resource getElementClassBaseType(AsyncReadGraph graph) {
return DN.Edge;
}
-
+
@Override
public void load(ReadGraph graph, ICanvasContext canvas, IDiagram diagram, Resource edgeResource, IElement element) throws DatabaseException {
-
+ if (!graph.hasStatement(edgeResource))
+ return; // already deleted
+
+ if (!graph.hasStatement(edgeResource, DN.HasStartVertex))
+ return; // already deleted
Resource startVertex = graph.getSingleObject(edgeResource, DN.HasStartVertex);
+
+ if (!graph.hasStatement(edgeResource, DN.HasEndVertex))
+ return; // already deleted
Resource endVertex = graph.getSingleObject(edgeResource, DN.HasEndVertex);
- // TODO: Find maybe a better way to apply the scaling
- double[] startCoords = graph.getRelatedValue2(startVertex, DIA.HasLocation);
- double[] endCoords = graph.getRelatedValue2(endVertex, DIA.HasLocation);
- DistrictNetworkEdge edge = new DistrictNetworkEdge(new Point2D.Double(startCoords[0], startCoords[1]), new Point2D.Double(endCoords[0], endCoords[1]));
+ double[] startCoords = graph.getRelatedValue2(startVertex, DIA.HasLocation, Bindings.DOUBLE_ARRAY);
+ double[] endCoords = graph.getRelatedValue2(endVertex, DIA.HasLocation, Bindings.DOUBLE_ARRAY);
+
+ double[] geometry = EMPTY;
+ try {
+ geometry = graph.getPossibleRelatedValue2(edgeResource, DN.Edge_HasGeometry, Bindings.DOUBLE_ARRAY);
+ } catch (Exception e) {
+ // most likely no geometry available
+ }
+ DistrictNetworkEdge edge = new DistrictNetworkEdge(new Point2D.Double(startCoords[0], startCoords[1]), new Point2D.Double(endCoords[0], endCoords[1]), geometry);
Resource mapping = graph.getSingleObject(edgeResource, DistrictNetworkResource.getInstance(graph).HasMapping);
element.setHint(DistrictNetworkAdditionalColor.KEY_DN_MAPPING_RESOURCE, mapping);