/**
* Writes an output of a GetView request to the <code>httpResponse</code> using the <code>mime
* </code> type.
*
* @param output the image to be sent back
* @param httpResponse the response to pipe the image
* @param mime the type of image
*/
private void writeImage(Image output, HttpServletResponse httpResponse, String mime) {
try {
OutputStream os = httpResponse.getOutputStream();
httpResponse.setContentType(mime);
if (mime.equalsIgnoreCase("image/jpg") || mime.equalsIgnoreCase("image/jpeg")) {
OGCWebService service = WPVServiceFactory.createInstance();
WPVSConfiguration config = (WPVSConfiguration) ((WPVService) service).getCapabilities();
float quality = config.getDeegreeParams().getViewQuality();
Encoders.encodeJpeg(os, (BufferedImage) output, quality);
// TODO png accepted?
} else if (mime.equalsIgnoreCase("image/png")) {
Encoders.encodePng(os, (BufferedImage) output);
} else if (mime.equalsIgnoreCase("image/tif") || mime.equalsIgnoreCase("image/tiff")) {
Encoders.encodeTiff(os, (BufferedImage) output);
} else if (mime.equalsIgnoreCase("image/bmp")) {
Encoders.encodeBmp(os, (BufferedImage) output);
} else {
httpResponse.setContentType("text/xml");
os = httpResponse.getOutputStream();
OGCWebServiceException exce =
new OGCWebServiceException("WMS:writeImage", "unsupported image format: " + mime);
os.write(((Marshallable) exce).exportAsXML().getBytes());
}
os.close();
} catch (Exception e) {
LOG.logError("-", e);
}
}
/**
* Performs the passed OGCWebServiceRequest by accessing service from the pool and passing the
* request to it
*
* @param request the incoming web service request
* @param httpResponse the outgoing web serivce response
* @throws ServiceException
* @throws OGCWebServiceException
*/
public void perform(OGCWebServiceRequest request, HttpServletResponse httpResponse)
throws ServiceException, OGCWebServiceException {
LOG.entering();
LOG.logDebug(StringTools.concat(200, "Performing request: ", request.toString()));
OGCWebService service = WPVServiceFactory.createInstance();
try {
Object response = service.doService(request);
if (response instanceof WPVSCapabilities) {
sendGetCapabilitiesResponse(httpResponse, (WPVSCapabilities) response);
} else if (response instanceof GetViewResponse) {
sendGetViewResponse(httpResponse, (GetViewResponse) response);
} else {
String s = (response == null ? "null response object" : response.getClass().getName());
// this is not really nice...because excepts get cought later on below
throw new OGCWebServiceException(
getClass().getName(), StringTools.concat(200, "Unknown response class: '", s, "'."));
}
} catch (OGCWebServiceException e) {
LOG.logError("Error performing WPVFS request.", e);
if (request instanceof GetView
&& ((GetView) request).getExceptionFormat().equals("INIMAGE")) {
sendExceptionImage(httpResponse, e, (GetView) request);
} else {
sendException(httpResponse, e);
}
}
LOG.exiting();
}
