public String getWMSLegendUrl(String urlServerWMS, String layerId, String stylesName) {
String legendUrl = "";
org.gvsig.remoteclient.wms.WMSStyle layerStyle = null;
org.gvsig.remoteclient.wms.WMSStyle layerStyleDefault = null;
// Create conexion with server WMS
try {
WMSClient wms = new WMSClient(urlServerWMS);
wms.connect(null);
WMSLayer layer = wms.getLayer(layerId);
if (layer != null) {
List<org.gvsig.remoteclient.wms.WMSStyle> lstStyles = layer.getStyles();
if (StringUtils.isNotEmpty(stylesName)) {
List<String> styList = Arrays.asList(stylesName.split(","));
for (org.gvsig.remoteclient.wms.WMSStyle wmsStyle : lstStyles) {
// default not
if (styList.contains(wmsStyle.getName())
&& wmsStyle.getName().toLowerCase() != "default") {
layerStyle = wmsStyle;
break;
} else {
if (wmsStyle.getName().toLowerCase() == "default") {
layerStyleDefault = wmsStyle;
}
}
}
// if layer style isn't defined on parameter, set default style
// or the first
if (layerStyle == null) {
if (layerStyleDefault == null && !lstStyles.isEmpty()) {
layerStyle = lstStyles.get(0);
} else {
layerStyle = layerStyleDefault;
}
}
} else {
// if haven't styles, get the first
if (!lstStyles.isEmpty()) {
layerStyle = lstStyles.get(0);
}
}
if (layerStyle != null) {
legendUrl = layerStyle.getLegendURLOnlineResourceHRef();
}
}
} catch (Exception exc) {
// Show exception in log
logger.error("Exception on getWMSLegendUrl", exc);
}
return legendUrl;
}
/**
* Get the four coordinates that represent the bounding box which includes all the layers
* indicated for a WMS Server
*
* @param urlServer Url of the WMS server to connect and get the data
* @param crs CRS of the bounding box
* @param layers List of layers to include in the bounding box calculated
* @return A list of coordinates that represents the bounding box calculated (minX, minY, maxX,
* maxY). null if haven't valid bounding box
*/
private List<String> getWMSLayersBoundingBox(
String urlServer, String crs, TreeSet<String> layers) {
List<String> boundingBox = new ArrayList<String>();
double xMax = 0;
double xMin = 0;
double yMin = 0;
double yMax = 0;
BoundaryBox bbox = null;
try {
WMSClient wms = new WMSClient(urlServer);
wms.connect(null);
if (layers != null) {
Iterator<String> iterLayers = layers.iterator();
// get the first element
WMSLayer layer = wms.getLayer(iterLayers.next());
if (layer != null) {
bbox = layer.getBbox(crs);
if (bbox != null) {
xMax = bbox.getXmax();
yMax = bbox.getYmax();
xMin = bbox.getXmin();
yMin = bbox.getYmin();
}
}
while (iterLayers.hasNext()) {
layer = wms.getLayer(iterLayers.next());
bbox = layer.getBbox(crs);
if (bbox != null) {
// if getXmax is greater than xMax
if (Double.compare(xMax, bbox.getXmax()) < 0) {
xMax = bbox.getXmax();
}
// if getYmax is greater than yMax
if (Double.compare(yMax, bbox.getYmax()) < 0) {
yMax = bbox.getYmax();
}
// if getXmin is less than xMin
if (Double.compare(xMin, bbox.getXmin()) > 0) {
xMin = bbox.getXmin();
}
// if getYmin is less than yMin
if (Double.compare(yMin, bbox.getYmin()) > 0) {
yMin = bbox.getYmin();
}
}
}
if (bbox != null) {
boundingBox.add(String.valueOf(xMin));
boundingBox.add(String.valueOf(yMin));
boundingBox.add(String.valueOf(xMax));
boundingBox.add(String.valueOf(yMax));
}
}
} catch (Exception exc) {
// Show exception in log and create ServerGeoException which is
// captured on controller and puts message to ajax response
logger.error("Exception on getWMSLayersBoundingBox", exc);
throw new ServerGeoException();
}
return boundingBox;
}
