@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); }