/**
* Handles the encoding of the layers elements.
*
* <p>This method does a search over the SRS of all the layers to see if there are at least a
* common one, as needed by the spec: "<i>The root Layer element shall include a sequence of
* zero or more <SRS> elements listing all SRSes that are common to all subsidiary layers.
* Use a single SRS element with empty content (like so: "<SRS></SRS>") if there is
* no common SRS."</i>
*
* <p>By the other hand, this search is also used to collecto the whole latlon bbox, as stated
* by the spec: <i>"The bounding box metadata in Capabilities XML specify the minimum enclosing
* rectangle for the layer as a whole."</i>
*
* @task TODO: manage this differently when we have the layer list of the WMS service decoupled
* from the feature types configured for the server instance. (This involves nested layers,
* gridcoverages, etc)
*/
private void handleLayers() {
start("Layer");
final List<LayerInfo> layers;
// filter the layers if a namespace filter has been set
if (request.getNamespace() != null) {
final List<LayerInfo> allLayers = wmsConfig.getLayers();
layers = new ArrayList<LayerInfo>();
String namespace = wmsConfig.getNamespaceByPrefix(request.getNamespace());
for (LayerInfo layer : allLayers) {
Name name = layer.getResource().getQualifiedName();
if (name.getNamespaceURI().equals(namespace)) {
layers.add(layer);
}
}
} else {
layers = wmsConfig.getLayers();
}
WMSInfo serviceInfo = wmsConfig.getServiceInfo();
element("Title", serviceInfo.getTitle());
element("Abstract", serviceInfo.getAbstract());
List<String> srsList = serviceInfo.getSRS();
Set<String> srs = new HashSet<String>();
if (srsList != null) {
srs.addAll(srsList);
}
handleRootCrsList(srs);
handleRootBbox(layers);
// now encode each layer individually
LayerTree featuresLayerTree = new LayerTree(layers);
handleLayerTree(featuresLayerTree);
try {
List<LayerGroupInfo> layerGroups = wmsConfig.getLayerGroups();
handleLayerGroups(new ArrayList<LayerGroupInfo>(layerGroups));
} catch (FactoryException e) {
throw new RuntimeException("Can't obtain Envelope of Layer-Groups: " + e.getMessage(), e);
} catch (TransformException e) {
throw new RuntimeException("Can't obtain Envelope of Layer-Groups: " + e.getMessage(), e);
}
end("Layer");
}
/**
* @see
* org.geoserver.wms.ExtendedCapabilitiesProvider#encode(org.geoserver.wms.ExtendedCapabilitiesProvider.Translator,
* org.geoserver.wms.WMSInfo, org.geotools.util.Version)
*/
public void encode(final Translator tx, final WMSInfo wms, final GetCapabilitiesRequest request)
throws IOException {
Version version = WMS.version(request.getVersion(), true);
if (!WMS.VERSION_1_1_1.equals(version) || !isTiled(request)) {
return;
}
String namespacePrefixFilter = request.getNamespace();
Iterable<TileLayer> tileLayers = gwc.getTileLayersByNamespacePrefix(namespacePrefixFilter);
for (TileLayer layer : tileLayers) {
Set<String> layerGrids = layer.getGridSubsets();
for (String gridId : layerGrids) {
GridSubset grid = layer.getGridSubset(gridId);
for (MimeType mime : layer.getMimeTypes()) {
vendorSpecificTileset(tx, layer, grid, mime.getFormat());
}
}
}
}