/** * Create a list of layers described by an array of XML layer description elements. * * <p>Any exceptions occurring during creation of the layers are logged and not re-thrown. The * layers associated with the exceptions are not included in the returned layer list. * * @param layerElements the XML elements describing the layers to create. * @param params any parameters to apply when creating the layers. * @return a layer list containing the specified layers. */ protected LayerList createLayerList(Element[] layerElements, AVList params) { LayerList layerList = new LayerList(); for (Element element : layerElements) { try { layerList.add(this.createFromLayerDocument(element, params)); } catch (Exception e) { Logging.logger().log(java.util.logging.Level.WARNING, e.getMessage(), e); // keep going to create other layers } } return layerList; }
/** * Create a collection of layer lists and their included layers described by an array of XML * layer-list description elements. * * <p>Any exceptions occurring during creation of the layer lists or their included layers are * logged and not re-thrown. The layers associated with the exceptions are not included in the * returned layer list. * * @param elements the XML elements describing the layer lists to create. * @param params any parameters to apply when creating the included layers. * @return an array containing the specified layer lists. */ protected LayerList[] createLayerLists(Element[] elements, AVList params) { ArrayList<LayerList> layerLists = new ArrayList<LayerList>(); for (Element element : elements) { try { String href = WWXML.getText(element, "@href"); if (href != null && href.length() > 0) { Object o = this.createFromConfigSource(href, params); if (o == null) continue; if (o instanceof Layer) { LayerList ll = new LayerList(); ll.add((Layer) o); o = ll; } if (o instanceof LayerList) { LayerList list = (LayerList) o; if (list != null && list.size() > 0) layerLists.add(list); } else if (o instanceof LayerList[]) { LayerList[] lists = (LayerList[]) o; if (lists != null && lists.length > 0) layerLists.addAll(Arrays.asList(lists)); } else { String msg = Logging.getMessage("LayerFactory.UnexpectedTypeForLayer", o.getClass().getName()); Logging.logger().log(java.util.logging.Level.WARNING, msg); } continue; } String title = WWXML.getText(element, "@title"); Element[] children = WWXML.getElements(element, "./Layer", null); if (children != null && children.length > 0) { LayerList list = this.createLayerList(children, params); if (list != null && list.size() > 0) { layerLists.add(list); if (title != null && title.length() > 0) list.setValue(AVKey.DISPLAY_NAME, title); } } } catch (Exception e) { Logging.logger().log(java.util.logging.Level.WARNING, e.getMessage(), e); // keep going to create other layers } } return layerLists.toArray(new LayerList[layerLists.size()]); }