/**
* This process returns a boolean value which indicates if the requested download does not exceed
* the imposed limits, if present
*
* @param layerName the layer name
* @param filter the filter
* @param email the email
* @param outputFormat the output format
* @param targetCRS the target crs
* @param roiCRS the roi crs
* @param roi the roi
* @param clip the crop to geometry
* @param targetSizeX the size of the target image along the X axis
* @param targetSizeY the size of the target image along the Y axis
* @param bandIndices the band indices selected for output, in case of raster input
* @param progressListener the progress listener
* @return the boolean
*/
@DescribeResult(name = "result", description = "Download Limits are respected or not!")
public Boolean execute(
@DescribeParameter(name = "layerName", min = 1, description = "Original layer to download")
String layerName,
@DescribeParameter(name = "filter", min = 0, description = "Optional Vectorial Filter")
Filter filter,
@DescribeParameter(name = "targetCRS", min = 0, description = "Target CRS")
CoordinateReferenceSystem targetCRS,
@DescribeParameter(name = "RoiCRS", min = 0, description = "Region Of Interest CRS")
CoordinateReferenceSystem roiCRS,
@DescribeParameter(name = "ROI", min = 0, description = "Region Of Interest") Geometry roi,
@DescribeParameter(name = "cropToROI", min = 0, description = "Crop to ROI") Boolean clip,
@DescribeParameter(
name = "targetSizeX",
min = 0,
minValue = 1,
description = "X Size of the Target Image (applies to raster data only)")
Integer targetSizeX,
@DescribeParameter(
name = "targetSizeY",
min = 0,
minValue = 1,
description = "Y Size of the Target Image (applies to raster data only)")
Integer targetSizeY,
@DescribeParameter(name = "selectedBands", description = "Band Selection Indices", min = 0)
int[] bandIndices,
ProgressListener progressListener)
throws Exception {
//
// initial checks on mandatory params
//
// layer name
if (layerName == null || layerName.length() <= 0) {
throw new IllegalArgumentException("Empty or null layerName provided!");
}
if (LOGGER.isLoggable(Level.FINE)) {
LOGGER.log(Level.FINE, "Estimator process called on resource: " + layerName);
}
if (clip == null) {
clip = false;
if (LOGGER.isLoggable(Level.FINE)) {
LOGGER.log(Level.FINE, "Clipping disabled");
}
}
if (roi != null) {
if (LOGGER.isLoggable(Level.FINE)) {
LOGGER.log(Level.FINE, "ROI present");
}
DownloadUtilities.checkPolygonROI(roi);
if (roiCRS == null) {
throw new IllegalArgumentException("ROI without a CRS is not usable!");
}
roi.setUserData(roiCRS);
}
//
// Move on with the real code
//
// checking for the resources on the GeoServer catalog
LayerInfo layerInfo = catalog.getLayerByName(layerName);
if (layerInfo == null) {
// could not find any layer ... abruptly interrupt the process
throw new IllegalArgumentException("Unable to locate layer: " + layerName);
}
ResourceInfo resourceInfo = layerInfo.getResource();
if (resourceInfo == null) {
// could not find any data store associated to the specified layer ... abruptly interrupt the
// process
throw new IllegalArgumentException("Unable to locate ResourceInfo for layer:" + layerName);
}
//
// Get curent limits
//
DownloadServiceConfiguration limits = downloadServiceConfigurationGenerator.getConfiguration();
if (LOGGER.isLoggable(Level.FINE)) {
LOGGER.log(Level.FINE, "Getting configuration limits");
}
// ////
// 1. DataStore -> look for vectorial data download
// 2. CoverageStore -> look for raster data download
// ////
if (resourceInfo instanceof FeatureTypeInfo) {
if (LOGGER.isLoggable(Level.FINE)) {
LOGGER.log(Level.FINE, "Working with Vectorial dataset");
}
final FeatureTypeInfo featureTypeInfo = (FeatureTypeInfo) resourceInfo;
return new VectorEstimator(limits)
.execute(featureTypeInfo, roi, clip, filter, targetCRS, progressListener);
} else if (resourceInfo instanceof CoverageInfo) {
if (LOGGER.isLoggable(Level.FINE)) {
LOGGER.log(Level.FINE, "Working with Raster dataset");
}
final CoverageInfo coverage = (CoverageInfo) resourceInfo;
return new RasterEstimator(limits)
.execute(
progressListener,
coverage,
roi,
targetCRS,
clip,
filter,
targetSizeX,
targetSizeY,
bandIndices);
}
if (LOGGER.isLoggable(Level.FINE)) {
LOGGER.log(Level.FINE, "Working with a wrong Resource");
}
// the requested layer is neither a featuretype nor a coverage --> error
final ProcessException ex =
new ProcessException(
"Could not complete the Download Process: target resource is of Illegal type --> "
+ resourceInfo
!= null
? resourceInfo.getClass().getCanonicalName()
: "null");
// Notify the listener if present
if (progressListener != null) {
progressListener.exceptionOccurred(ex);
}
throw ex;
}
/** @return the {@link DownloadServiceConfiguration} containing the limits to check */
public DownloadServiceConfiguration getDownloadServiceConfiguration() {
return downloadServiceConfigurationGenerator.getConfiguration();
}
