private static String guessCommonSRS(List<MapLayerInfo> layers) {
String SRS = null;
for (MapLayerInfo layer : layers) {
String layerSRS = layer.getSRS();
if (SRS == null) {
SRS = layerSRS.toUpperCase();
} else if (!SRS.equals(layerSRS)) {
// layers with mixed native SRS, let's just use the default
return DefaultWebMapService.SRS;
}
}
if (SRS == null) {
return DefaultWebMapService.SRS;
}
return SRS;
}
/*
* Adds a feature layer to the geopackage.
*/
void addFeatureLayer(
GeoPackage geopkg, FeatureLayer layer, MapLayerInfo mapLayer, WMSMapContent map)
throws IOException {
FeatureEntry e = new FeatureEntry();
initEntry(e, layer, mapLayer, map);
Filter filter = layer.getQuery().getFilter();
GeometryDescriptor gd = mapLayer.getFeature().getFeatureType().getGeometryDescriptor();
if (gd != null) {
Envelope bnds = bounds(map);
BBOX bboxFilter =
filterFactory.bbox(
gd.getLocalName(),
bnds.getMinX(),
bnds.getMinY(),
bnds.getMaxX(),
bnds.getMaxY(),
map.getRequest().getSRS());
filter = filterFactory.and(filter, bboxFilter);
}
LOGGER.fine("Creating feature entry" + e.getTableName());
geopkg.add(e, layer.getSimpleFeatureSource(), filter);
}
void initEntry(Entry e, Layer layer, MapLayerInfo mapLayer, WMSMapContent map)
throws IOException {
ResourceInfo r = mapLayer.getResource();
e.setTableName(r.getName());
e.setIdentifier(r.getTitle());
e.setDescription(r.getAbstract());
e.setBounds(bounds(map));
e.setSrid(srid(map));
}
void addCoverageLayer(
GeoPackage geopkg, GridCoverageLayer layer, MapLayerInfo mapLayer, WMSMapContent map)
throws IOException {
RasterEntry e = new RasterEntry();
initEntry(e, layer, mapLayer, map);
// TODO: ensure this is one of the supported formats
AbstractGridFormat format = mapLayer.getCoverage().getStore().getFormat();
LOGGER.fine("Creating raster entry" + e.getTableName());
geopkg.add(e, layer.getCoverage(), format);
}
/**
* This method tries to automatically determine SRS, bounding box and output size based on the
* layers provided by the user and any other parameters.
*
* <p>If bounds are not specified by the user, they are automatically se to the union of the
* bounds of all layers.
*
* <p>The size of the output image defaults to 512 pixels, the height is automatically determined
* based on the width to height ratio of the requested layers. This is also true if either height
* or width are specified by the user. If both height and width are specified by the user, the
* automatically determined bounding box will be adjusted to fit inside these bounds.
*
* <p>General idea 1) Figure out whether SRS has been specified, fall back to EPSG:4326 2)
* Determine whether all requested layers use the same SRS, - if so, try to do bounding box
* calculations in native coordinates 3) Aggregate the bounding boxes (in EPSG:4326 or native) 4a)
* If bounding box has been specified, adjust height of image to match 4b) If bounding box has not
* been specified, but height has, adjust bounding box
*/
public static void autoSetBoundsAndSize(GetMapRequest getMap) {
// Get the layers
List<MapLayerInfo> layers = getMap.getLayers();
/** 1) Check what SRS has been requested */
String reqSRS = getMap.getSRS();
// if none, try to determine which SRS to use
// and keep track of whether we can use native all the way
boolean useNativeBounds = true;
if (reqSRS == null) {
reqSRS = guessCommonSRS(layers);
forceSRS(getMap, reqSRS);
}
/** 2) Compare requested SRS */
for (int i = 0; useNativeBounds && i < layers.size(); i++) {
if (layers.get(i) != null) {
String layerSRS = layers.get(i).getSRS();
useNativeBounds =
reqSRS.equalsIgnoreCase(layerSRS)
&& layers.get(i).getResource().getNativeBoundingBox() != null;
} else {
useNativeBounds = false;
}
}
CoordinateReferenceSystem reqCRS;
try {
reqCRS = CRS.decode(reqSRS);
} catch (Exception e) {
throw new ServiceException(e);
}
// Ready to determine the bounds based on the layers, if not specified
Envelope aggregateBbox = getMap.getBbox();
boolean specifiedBbox = true;
// If bbox is not specified by request
if (aggregateBbox == null) {
specifiedBbox = false;
// Get the bounding box from the layers
for (int i = 0; i < layers.size(); i++) {
MapLayerInfo layerInfo = layers.get(i);
ReferencedEnvelope curbbox;
try {
curbbox = layerInfo.getLatLongBoundingBox();
if (useNativeBounds) {
ReferencedEnvelope nativeBbox = layerInfo.getBoundingBox();
if (nativeBbox == null) {
try {
CoordinateReferenceSystem nativeCrs = layerInfo.getCoordinateReferenceSystem();
nativeBbox = curbbox.transform(nativeCrs, true);
} catch (Exception e) {
throw new ServiceException("Best effort native bbox computation failed", e);
}
}
curbbox = nativeBbox;
}
} catch (Exception e) {
throw new RuntimeException(e);
}
if (aggregateBbox != null) {
aggregateBbox.expandToInclude(curbbox);
} else {
aggregateBbox = curbbox;
}
}
ReferencedEnvelope ref = null;
// Reproject back to requested SRS if we have to
if (!useNativeBounds && !reqSRS.equalsIgnoreCase(SRS)) {
try {
ref = new ReferencedEnvelope(aggregateBbox, CRS.decode("EPSG:4326"));
aggregateBbox = ref.transform(reqCRS, true);
} catch (ProjectionException pe) {
ref.expandBy(-1 * ref.getWidth() / 50, -1 * ref.getHeight() / 50);
try {
aggregateBbox = ref.transform(reqCRS, true);
} catch (FactoryException e) {
e.printStackTrace();
} catch (TransformException e) {
e.printStackTrace();
}
// And again...
} catch (NoSuchAuthorityCodeException e) {
e.printStackTrace();
} catch (TransformException e) {
e.printStackTrace();
} catch (FactoryException e) {
e.printStackTrace();
}
}
}
// Just in case
if (aggregateBbox == null) {
forceSRS(getMap, DefaultWebMapService.SRS);
aggregateBbox = DefaultWebMapService.BBOX;
}
// Start the processing of adjust either the bounding box
// or the pixel height / width
double bbheight = aggregateBbox.getHeight();
double bbwidth = aggregateBbox.getWidth();
double bbratio = bbwidth / bbheight;
double mheight = getMap.getHeight();
double mwidth = getMap.getWidth();
if (mheight > 0.5 && mwidth > 0.5 && specifiedBbox) {
// This person really doesnt want our help,
// we'll warp it any way they like it...
} else {
if (mheight > 0.5 && mwidth > 0.5) {
// Fully specified, need to adjust bbox
double mratio = mwidth / mheight;
// Adjust bounds to be less than ideal to meet spec
if (bbratio > mratio) {
// Too wide, need to increase height of bb
double diff = ((bbwidth / mratio) - bbheight) / 2;
aggregateBbox.expandBy(0, diff);
} else {
// Too tall, need to increase width of bb
double diff = ((bbheight * mratio) - bbwidth) / 2;
aggregateBbox.expandBy(diff, 0);
}
adjustBounds(reqSRS, aggregateBbox);
} else if (mheight > 0.5) {
mwidth = bbratio * mheight;
} else {
if (mwidth > 0.5) {
mheight = (mwidth / bbratio >= 1) ? mwidth / bbratio : 1;
} else {
if (bbratio > 1) {
mwidth = MAX_SIDE;
mheight = (mwidth / bbratio >= 1) ? mwidth / bbratio : 1;
} else {
mheight = MAX_SIDE;
mwidth = (mheight * bbratio >= 1) ? mheight * bbratio : 1;
}
// make sure OL output height is sufficient to show the OL scale bar fully
if (mheight < MIN_OL_HEIGHT
&& ("application/openlayers".equalsIgnoreCase(getMap.getFormat())
|| "openlayers".equalsIgnoreCase(getMap.getFormat()))) {
mheight = MIN_OL_HEIGHT;
mwidth = (mheight * bbratio >= 1) ? mheight * bbratio : 1;
}
}
}
// Actually set the bounding box and size of image
getMap.setBbox(aggregateBbox);
getMap.setWidth((int) mwidth);
getMap.setHeight((int) mheight);
}
}
@SuppressWarnings({"rawtypes", "unchecked"})
@Override
public Object read(Object req, Map kvp, Map rawKvp) throws Exception {
GetFeatureInfoRequest request = (GetFeatureInfoRequest) super.read(req, kvp, rawKvp);
request.setRawKvp(rawKvp);
GetMapRequest getMapPart = new GetMapRequest();
try {
getMapPart = getMapReader.read(getMapPart, kvp, rawKvp);
} catch (ServiceException se) {
throw se;
} catch (Exception e) {
throw new ServiceException(e);
}
request.setGetMapRequest(getMapPart);
List<MapLayerInfo> getMapLayers = getMapPart.getLayers();
if ((getMapPart.getSldBody() != null || getMapPart.getSld() != null)
&& (rawKvp.get("QUERY_LAYERS") == null || "".equals(rawKvp.get("QUERY_LAYERS")))) {
// in this case we assume all layers in SLD body are to be queried (GS own extension)(
request.setQueryLayers(getMapLayers);
} else {
request.setQueryLayers(
new MapLayerInfoKvpParser("QUERY_LAYERS", wms)
.parse((String) rawKvp.get("QUERY_LAYERS")));
}
if (request.getQueryLayers().isEmpty()) {
throw new ServiceException(
"No QUERY_LAYERS has been requested, or no " + "queriable layer in the request anyways");
}
if (kvp.containsKey("propertyName")) {
List<List<String>> propertyNames = (List<List<String>>) kvp.get("propertyName");
if (propertyNames.size() == 1 && request.getQueryLayers().size() > 1) {
// assume we asked the same list for all layers
while (propertyNames.size() < request.getQueryLayers().size()) {
propertyNames.add(propertyNames.get(0));
}
}
if (propertyNames.size() != request.getQueryLayers().size()) {
throw new ServiceException(
"Mismatch between the property name set count "
+ propertyNames.size()
+ " and the query layers count "
+ request.getQueryLayers().size(),
"InvalidParameter",
"propertyName");
}
request.setPropertyNames(propertyNames);
}
// make sure they are a subset of layers
List<MapLayerInfo> queryLayers = new ArrayList<MapLayerInfo>(request.getQueryLayers());
queryLayers.removeAll(getMapLayers);
if (queryLayers.size() > 0) {
// we've already expanded base layers so let's avoid list the names, they are not
// the original ones anymore
throw new ServiceException(
"QUERY_LAYERS contains layers not cited in LAYERS. "
+ "It should be a proper subset of those instead");
}
for (MapLayerInfo l : request.getQueryLayers()) {
LayerInfo layerInfo = l.getLayerInfo();
if (!wms.isQueryable(layerInfo)) {
throw new ServiceException(
"Layer " + l.getName() + " is not queryable",
WMSErrorCode.LAYER_NOT_QUERYABLE.get(request.getVersion()),
"QUERY_LAYERS");
}
}
String format = (String) (kvp.containsKey("INFO_FORMAT") ? kvp.get("INFO_FORMAT") : null);
if (format == null) {
format = "text/plain";
} else {
List<String> infoFormats = wms.getAvailableFeatureInfoFormats();
if (!infoFormats.contains(format)) {
throw new ServiceException(
"Invalid format '" + format + "', supported formats are " + infoFormats,
"InvalidFormat",
"info_format");
}
if (wms.getAllowedFeatureInfoFormats().contains(format) == false)
throw wms.unallowedGetFeatureInfoFormatException(format);
}
request.setInfoFormat(format);
request.setFeatureCount(1); // DJB: according to the WMS spec (7.3.3.7 FEATURE_COUNT) this
// should be 1. also tested for by cite
try {
int maxFeatures = Integer.parseInt(String.valueOf(kvp.get("FEATURE_COUNT")));
request.setFeatureCount(maxFeatures);
} catch (NumberFormatException ex) {
// do nothing, FEATURE_COUNT is optional
}
Version version = wms.negotiateVersion(request.getVersion());
request.setVersion(version.toString());
// JD: most wms 1.3 client implementations still use x/y rather than i/j, so we support those
// too when i/j not specified when not running in strict cite compliance mode
String colPixel, rowPixel;
if (version.compareTo(WMS.VERSION_1_3_0) >= 0) {
colPixel = "I";
rowPixel = "J";
if (!kvp.containsKey(colPixel) && !kvp.containsKey(rowPixel)) {
if (!wms.getServiceInfo().isCiteCompliant()
&& kvp.containsKey("X")
&& kvp.containsKey("Y")) {
colPixel = "X";
rowPixel = "Y";
}
}
} else {
colPixel = "X";
rowPixel = "Y";
}
try {
String colParam = String.valueOf(kvp.get(colPixel));
String rowParam = String.valueOf(kvp.get(rowPixel));
int x = Integer.parseInt(colParam);
int y = Integer.parseInt(rowParam);
// ensure x/y in dimension of image
if (x < 0 || x > getMapPart.getWidth() || y < 0 || y > getMapPart.getHeight()) {
throw new ServiceException(
String.format(
"%d, %d not in dimensions of image: %d, %d",
x, y, getMapPart.getWidth(), getMapPart.getHeight()),
"InvalidPoint");
}
request.setXPixel(x);
request.setYPixel(y);
} catch (NumberFormatException ex) {
String msg = colPixel + " and " + rowPixel + " incorrectly specified";
throw new ServiceException(msg, "InvalidPoint");
}
return request;
}
GridSubset findBestGridSubset(WMSMapContent map) {
GetMapRequest req = map.getRequest();
Map formatOpts = req.getFormatOptions();
GridSetBroker gridSetBroker = gwc.getGridSetBroker();
GridSet gridSet = null;
// first check format options to see if explicitly specified
if (formatOpts.containsKey("gridset")) {
gridSet = gridSetBroker.get(formatOpts.get("gridset").toString());
}
// next check srs
if (gridSet == null) {
gridSet = gridSetBroker.get(req.getSRS().toUpperCase());
}
if (gridSet != null) {
return GridSubsetFactory.createGridSubSet(gridSet);
}
CoordinateReferenceSystem crs = map.getCoordinateReferenceSystem();
// look up epsg code
Integer epsgCode = null;
try {
epsgCode = CRS.lookupEpsgCode(crs, false);
} catch (Exception e) {
throw new ServiceException("Unable to determine epsg code for " + crs, e);
}
if (epsgCode == null) {
throw new ServiceException("Unable to determine epsg code for " + crs);
}
SRS srs = SRS.getSRS(epsgCode);
// figure out the appropriate grid sub set
Set<GridSubset> gridSubsets = new LinkedHashSet<GridSubset>();
for (MapLayerInfo l : req.getLayers()) {
TileLayer tl = gwc.getTileLayerByName(l.getName());
if (tl == null) {
throw new ServiceException("No tile layer for " + l.getName());
}
List<GridSubset> theseGridSubsets = tl.getGridSubsetsForSRS(srs);
if (gridSubsets.isEmpty()) {
gridSubsets.addAll(theseGridSubsets);
} else {
gridSubsets.retainAll(theseGridSubsets);
}
if (gridSubsets.isEmpty()) {
throw new ServiceException(
"No suitable " + epsgCode + " grid subset for " + req.getLayers());
}
}
if (gridSubsets.size() > 1) {
if (LOGGER.isLoggable(Level.WARNING)) {
StringBuilder msg = new StringBuilder("Found multiple grid subsets: ");
for (GridSubset gs : gridSubsets) {
msg.append(gs.getName()).append(", ");
}
msg.setLength(msg.length() - 2);
msg.append(". Choosing first.");
LOGGER.warning(msg.toString());
}
}
return gridSubsets.iterator().next();
}
/**
* Returns the read parameters for the specified layer, merging some well known request parameters
* into the read parameters if possible
*
* @param request
* @param mapLayerInfo
* @param layerFilter
* @param reader
* @return
*/
public GeneralParameterValue[] getWMSReadParameters(
final GetMapRequest request,
final MapLayerInfo mapLayerInfo,
final Filter layerFilter,
final List<Object> times,
final List<Object> elevations,
final GridCoverage2DReader reader,
boolean readGeom)
throws IOException {
// setup the scene
final ParameterValueGroup readParametersDescriptor = reader.getFormat().getReadParameters();
CoverageInfo coverage = mapLayerInfo.getCoverage();
MetadataMap metadata = coverage.getMetadata();
GeneralParameterValue[] readParameters =
CoverageUtils.getParameters(readParametersDescriptor, coverage.getParameters(), readGeom);
ReaderDimensionsAccessor dimensions = new ReaderDimensionsAccessor(reader);
// pass down time
final DimensionInfo timeInfo = metadata.get(ResourceInfo.TIME, DimensionInfo.class);
// add the descriptors for custom dimensions
final List<GeneralParameterDescriptor> parameterDescriptors =
new ArrayList<GeneralParameterDescriptor>(
readParametersDescriptor.getDescriptor().descriptors());
Set<ParameterDescriptor<List>> dynamicParameters = reader.getDynamicParameters();
parameterDescriptors.addAll(dynamicParameters);
if (timeInfo != null && timeInfo.isEnabled()) {
// handle "default"
List<Object> fixedTimes = new ArrayList<Object>(times);
for (int i = 0; i < fixedTimes.size(); i++) {
if (fixedTimes.get(i) == null) {
fixedTimes.set(i, getDefaultTime(coverage));
}
}
// pass down the parameters
readParameters =
CoverageUtils.mergeParameter(
parameterDescriptors, readParameters, fixedTimes, "TIME", "Time");
}
// pass down elevation
final DimensionInfo elevationInfo = metadata.get(ResourceInfo.ELEVATION, DimensionInfo.class);
if (elevationInfo != null && elevationInfo.isEnabled()) {
// handle "default"
List<Object> fixedElevations = new ArrayList<Object>(elevations);
for (int i = 0; i < fixedElevations.size(); i++) {
if (fixedElevations.get(i) == null) {
fixedElevations.set(i, getDefaultElevation(coverage));
}
}
readParameters =
CoverageUtils.mergeParameter(
parameterDescriptors, readParameters, fixedElevations, "ELEVATION", "Elevation");
}
if (layerFilter != null && readParameters != null) {
// test for default [empty is replaced with INCLUDE filter] ]filter
for (int i = 0; i < readParameters.length; i++) {
GeneralParameterValue param = readParameters[i];
GeneralParameterDescriptor pd = param.getDescriptor();
if (pd.getName().getCode().equalsIgnoreCase("FILTER")) {
final ParameterValue pv = (ParameterValue) pd.createValue();
// if something different from the default INCLUDE filter is specified
if (layerFilter != Filter.INCLUDE) {
// override the default filter
pv.setValue(layerFilter);
readParameters[i] = pv;
}
break;
}
}
}
// custom dimensions
List<String> customDomains = new ArrayList(dimensions.getCustomDomains());
for (String domain : new ArrayList<String>(customDomains)) {
List<String> values = request.getCustomDimension(domain);
if (values != null) {
readParameters =
CoverageUtils.mergeParameter(parameterDescriptors, readParameters, values, domain);
customDomains.remove(domain);
}
}
// see if we have any custom domain for which we have to set the default value
if (!customDomains.isEmpty()) {
for (String name : customDomains) {
final DimensionInfo customInfo =
metadata.get(ResourceInfo.CUSTOM_DIMENSION_PREFIX + name, DimensionInfo.class);
if (customInfo != null && customInfo.isEnabled()) {
final ArrayList<String> val = new ArrayList<String>(1);
val.add(getDefaultCustomDimensionValue(name, coverage, String.class));
readParameters =
CoverageUtils.mergeParameter(parameterDescriptors, readParameters, val, name);
}
}
}
return readParameters;
}