/**
* Recursive function to parse a layer tree
*
* @param lt
* @param parentLayer
*/
private void parseJaxbLayer(LayerType lt, ILayer parentLayer) throws LayerException {
// Test if lt is a group
if (!lt.getLayer().isEmpty() || (lt.getDataURL() == null)) {
// it will create a LayerCollection
parseJaxbLayerCollection(lt, parentLayer);
} else {
// it corresponding to a leaf layer
// We need to read the data declaration and create the layer
URLType dataUrl = lt.getDataURL();
if (dataUrl != null) {
OnlineResourceType resType = dataUrl.getOnlineResource();
try {
URI layerURI = new URI(resType.getHref());
// The resource is given as relative to MapContext location
if (!layerURI.isAbsolute() && getLocation() != null) {
try {
// Resolve the relative resource ex: new Uri("myFile.shp")
layerURI = getLocation().resolve(layerURI);
} catch (IllegalArgumentException ex) {
LOGGER.warn(
"Error while trying to find an absolute path for an external resource", ex);
}
}
// Get table name
ILayer leafLayer = createLayer(layerURI);
leafLayer.setDescription(new Description(lt));
leafLayer.setVisible(!lt.isHidden());
// Parse styles
if (lt.isSetStyleList()) {
for (StyleType st : lt.getStyleList().getStyle()) {
if (st.isSetSLD()) {
if (st.getSLD().isSetAbstractStyle()) {
leafLayer.addStyle(
new Style(
(JAXBElement<net.opengis.se._2_0.core.StyleType>)
st.getSLD().getAbstractStyle(),
leafLayer));
}
}
}
}
parentLayer.addLayer(leafLayer);
} catch (URISyntaxException ex) {
throw new LayerException(
I18N.tr("Unable to parse the href URI {0}.", resType.getHref()), ex);
} catch (InvalidStyle ex) {
throw new LayerException(
I18N.tr("Unable to load the description of the layer {0}", lt.getTitle().toString()),
ex);
}
}
}
}
/**
* Recursive function to parse a layer tree
*
* @param lt
* @param parentLayer
*/
private void parseJaxbLayerCollection(LayerType lt, ILayer parentLayer) throws LayerException {
LayerCollection layerCollection = new LayerCollection(lt);
for (LayerType ltc : lt.getLayer()) {
try {
parseJaxbLayer(ltc, layerCollection);
} catch (LayerException ex) {
// The layer is not created if a layer exception is thrown
// Create a warning, because the MapContext is loaded
LOGGER.warn(I18N.tr("The layer has not been imported"), ex);
}
}
parentLayer.addLayer(layerCollection);
}