/**
* 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");
}
/**
* Retrieves the WMS's capabilities document.
*
* @param scaleHintUnitsPerDiaPixel true if the scalehint must be in units per diagonal of a pixel
* @return Capabilities as {@link Document}
*/
private Document findCapabilities(Boolean scaleHintUnitsPerDiaPixel) throws Exception {
// set the Scalehint units per diagonal pixel setting.
WMS wms = getWMS();
WMSInfo info = wms.getServiceInfo();
MetadataMap mm = info.getMetadata();
mm.put(WMS.SCALEHINT_MAPUNITS_PIXEL, scaleHintUnitsPerDiaPixel);
info.getGeoServer().save(info);
GetCapabilitiesTransformer tr =
new GetCapabilitiesTransformer(wms, BASE_URL, FORMATS, LEGEND_FORMAT, null);
GetCapabilitiesRequest req = new GetCapabilitiesRequest();
req.setBaseUrl(BASE_URL);
req.setVersion(WMS.VERSION_1_1_1.toString());
Document dom = WMSTestSupport.transform(req, tr);
Element root = dom.getDocumentElement();
Assert.assertEquals(WMS.VERSION_1_1_1.toString(), root.getAttribute("version"));
return dom;
}
/**
* @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());
}
}
}
}
@Override
public void encode(Translator tx, WMSInfo wms, GetCapabilitiesRequest request)
throws IOException {
Version requestVersion = WMS.version(request.getVersion());
// if this is not a wms 1.3.0 request
if (!WMS.VERSION_1_3_0.equals(requestVersion)) {
return;
}
MetadataMap serviceMetadata = wms.getMetadata();
Boolean createExtendedCapabilities =
serviceMetadata.get(CREATE_EXTENDED_CAPABILITIES.key, Boolean.class);
String metadataURL = (String) serviceMetadata.get(SERVICE_METADATA_URL.key);
// Don't create extended capabilities element if mandatory content not present
// or turned off
if (metadataURL == null || createExtendedCapabilities != null && !createExtendedCapabilities) {
return;
}
String mediaType = (String) serviceMetadata.get(SERVICE_METADATA_TYPE.key);
String language = (String) serviceMetadata.get(LANGUAGE.key);
// IGN : INSPIRE SCENARIO 1
tx.start("inspire_vs:ExtendedCapabilities");
tx.start("inspire_common:MetadataUrl");
tx.start("inspire_common:URL");
tx.chars(metadataURL);
tx.end("inspire_common:URL");
if (mediaType != null) {
tx.start("inspire_common:MediaType");
tx.chars(mediaType);
tx.end("inspire_common:MediaType");
}
tx.end("inspire_common:MetadataUrl");
tx.start("inspire_common:SupportedLanguages");
language = language != null ? language : "eng";
tx.start("inspire_common:DefaultLanguage");
tx.start("inspire_common:Language");
tx.chars(language);
tx.end("inspire_common:Language");
tx.end("inspire_common:DefaultLanguage");
tx.end("inspire_common:SupportedLanguages");
tx.start("inspire_common:ResponseLanguage");
tx.start("inspire_common:Language");
tx.chars(language);
tx.end("inspire_common:Language");
tx.end("inspire_common:ResponseLanguage");
tx.end("inspire_vs:ExtendedCapabilities");
}
/** Encodes the service metadata section of a WMS capabilities document. */
private void handleService() {
start("Service");
final WMSInfo serviceInfo = wmsConfig.getServiceInfo();
element("Name", "OGC:WMS");
element("Title", serviceInfo.getTitle());
element("Abstract", serviceInfo.getAbstract());
handleKeywordList(serviceInfo.getKeywords());
AttributesImpl orAtts = new AttributesImpl();
orAtts.addAttribute("", "xmlns:xlink", "xmlns:xlink", "", XLINK_NS);
orAtts.addAttribute(XLINK_NS, "xlink:type", "xlink:type", "", "simple");
String onlineResource = serviceInfo.getOnlineResource();
if (onlineResource == null || onlineResource.trim().length() == 0) {
String requestBaseUrl = request.getBaseUrl();
onlineResource = buildURL(requestBaseUrl, null, null, URLType.SERVICE);
} else {
try {
new URL(onlineResource);
} catch (MalformedURLException e) {
LOGGER.log(
Level.WARNING,
"WMS online resource seems to be an invalid URL: '" + onlineResource + "'");
}
}
orAtts.addAttribute("", "xlink:href", "xlink:href", "", onlineResource);
element("OnlineResource", null, orAtts);
GeoServer geoServer = wmsConfig.getGeoServer();
ContactInfo contact = geoServer.getGlobal().getContact();
handleContactInfo(contact);
element("Fees", serviceInfo.getFees());
element("AccessConstraints", serviceInfo.getAccessConstraints());
end("Service");
}
private void handleRequest() {
start("Request");
start("GetCapabilities");
element("Format", WMS_CAPS_MIME);
// build the service URL and make sure it ends with &
String serviceUrl =
buildURL(request.getBaseUrl(), "wms", params("SERVICE", "WMS"), URLType.SERVICE);
serviceUrl = appendQueryString(serviceUrl, "");
handleDcpType(serviceUrl, serviceUrl);
end("GetCapabilities");
start("GetMap");
List<String> sortedFormats = new ArrayList<String>(getMapFormats);
Collections.sort(sortedFormats);
// this is a hack necessary to make cite tests pass: we need an output format
// that is equal to the mime type as the first one....
if (sortedFormats.contains("image/png")) {
sortedFormats.remove("image/png");
sortedFormats.add(0, "image/png");
}
for (Iterator<String> it = sortedFormats.iterator(); it.hasNext(); ) {
element("Format", String.valueOf(it.next()));
}
handleDcpType(serviceUrl, null);
end("GetMap");
start("GetFeatureInfo");
for (String format : wmsConfig.getAvailableFeatureInfoFormats()) {
element("Format", format);
}
handleDcpType(serviceUrl, serviceUrl);
end("GetFeatureInfo");
start("DescribeLayer");
element("Format", DescribeLayerResponse.DESCLAYER_MIME_TYPE);
handleDcpType(serviceUrl, null);
end("DescribeLayer");
start("GetLegendGraphic");
for (String format : getLegendGraphicFormats) {
element("Format", format);
}
handleDcpType(serviceUrl, null);
end("GetLegendGraphic");
start("GetStyles");
element("Format", GetStylesResponse.SLD_MIME_TYPE);
handleDcpType(serviceUrl, null);
end("GetStyles");
end("Request");
}
/**
* Writes layer LegendURL pointing to the user supplied icon URL, if any, or to the proper
* GetLegendGraphic operation if an URL was not supplied by configuration file.
*
* <p>It is common practice to supply a URL to a WMS accesible legend graphic when it is
* difficult to create a dynamic legend for a layer.
*
* @param ft The FeatureTypeInfo that holds the legendURL to write out, or<code>null</code> if
* dynamically generated.
* @task TODO: figure out how to unhack legend parameters such as WIDTH, HEIGHT and FORMAT
*/
protected void handleLegendURL(String layerName, LegendInfo legend, StyleInfo style) {
if (legend != null) {
if (LOGGER.isLoggable(Level.FINE)) {
LOGGER.fine("using user supplied legend URL");
}
AttributesImpl attrs = new AttributesImpl();
attrs.addAttribute("", "width", "width", "", String.valueOf(legend.getWidth()));
attrs.addAttribute("", "height", "height", "", String.valueOf(legend.getHeight()));
start("LegendURL", attrs);
element("Format", legend.getFormat());
attrs.clear();
attrs.addAttribute("", "xmlns:xlink", "xmlns:xlink", "", XLINK_NS);
attrs.addAttribute(XLINK_NS, "type", "xlink:type", "", "simple");
attrs.addAttribute(XLINK_NS, "href", "xlink:href", "", legend.getOnlineResource());
element("OnlineResource", null, attrs);
end("LegendURL");
} else {
String defaultFormat = GetLegendGraphicRequest.DEFAULT_FORMAT;
if (null == wmsConfig.getLegendGraphicOutputFormat(defaultFormat)) {
if (LOGGER.isLoggable(Level.WARNING)) {
LOGGER.warning(
new StringBuffer("Default legend format (")
.append(defaultFormat)
.append(")is not supported (jai not available?), can't add LegendURL element")
.toString());
}
return;
}
if (LOGGER.isLoggable(Level.FINE)) {
LOGGER.fine("Adding GetLegendGraphic call as LegendURL");
}
AttributesImpl attrs = new AttributesImpl();
attrs.addAttribute(
"", "width", "width", "", String.valueOf(GetLegendGraphicRequest.DEFAULT_WIDTH));
// DJB: problem here is that we do not know the size of the
// legend apriori - we need
// to make one and find its height. Not the best way, but it
// would work quite well.
// This was advertising a 20*20 icon, but actually producing
// ones of a different size.
// An alternative is to just scale the resulting icon to what
// the server requested, but this isnt
// the nicest thing since warped images dont look nice. The
// client should do the warping.
// however, to actually estimate the size is a bit difficult.
// I'm going to do the scaling
// so it obeys the what the request says. For people with a
// problem with that should consider
// changing the default size here so that the request is for the
// correct size.
attrs.addAttribute(
"", "height", "height", "", String.valueOf(GetLegendGraphicRequest.DEFAULT_HEIGHT));
start("LegendURL", attrs);
element("Format", defaultFormat);
attrs.clear();
Map<String, String> params =
params(
"request",
"GetLegendGraphic",
"format",
defaultFormat,
"width",
String.valueOf(GetLegendGraphicRequest.DEFAULT_WIDTH),
"height",
String.valueOf(GetLegendGraphicRequest.DEFAULT_HEIGHT),
"layer",
layerName);
if (style != null) {
params.put("style", style.getName());
}
String legendURL = buildURL(request.getBaseUrl(), "wms", params, URLType.SERVICE);
attrs.addAttribute("", "xmlns:xlink", "xmlns:xlink", "", XLINK_NS);
attrs.addAttribute(XLINK_NS, "type", "xlink:type", "", "simple");
attrs.addAttribute(XLINK_NS, "href", "xlink:href", "", legendURL);
element("OnlineResource", null, attrs);
end("LegendURL");
}
}
private boolean isTiled(GetCapabilitiesRequest request) {
return Boolean.valueOf(request.getRawKvp().get("TILED")).booleanValue();
}
