@Override
protected Layer doCreateFromCapabilities(OGCCapabilities caps, AVList params) {
String serviceName = caps.getServiceInformation().getServiceName();
if (serviceName == null
|| !(serviceName.equalsIgnoreCase(OGCConstants.WMS_SERVICE_NAME)
|| serviceName.equalsIgnoreCase("WMS"))) {
String message =
Logging.getMessage("WMS.NotWMSService", serviceName != null ? serviceName : "null");
Logging.logger().severe(message);
throw new IllegalArgumentException(message);
}
if (params == null) params = new AVListImpl();
if (params.getStringValue(AVKey.LAYER_NAMES) == null) {
// Use the first named layer since no other guidance given
List<WMSLayerCapabilities> namedLayers = ((WMSCapabilities) caps).getNamedLayers();
if (namedLayers == null || namedLayers.size() == 0 || namedLayers.get(0) == null) {
String message = Logging.getMessage("WMS.NoLayersFound");
Logging.logger().severe(message);
throw new IllegalStateException(message);
}
params.setValue(AVKey.LAYER_NAMES, namedLayers.get(0).getName());
}
return new WMSTiledImageLayer((WMSCapabilities) caps, params);
}
/**
* Returns all named layers in the capabilities document.
*
* @return an unordered list of the document's named layers.
*/
public List<WMSLayerCapabilities> getNamedLayers() {
if (this.getCapabilityInformation() == null
|| this.getCapabilityInformation().getLayerCapabilities() == null) return null;
List<WMSLayerCapabilities> namedLayers = new ArrayList<WMSLayerCapabilities>();
for (WMSLayerCapabilities layer : this.getCapabilityInformation().getLayerCapabilities()) {
namedLayers.addAll(layer.getNamedLayers());
}
return namedLayers;
}