/**
* validates the passed object as a response to a OWS request. The validity of the response may is
* assigned to specific user rights. If the passed user is <>null this will be evaluated. <br>
* the reponse may contain three valid kinds of objects:
*
* <ul>
* <li>a xml encoded exception
* <li>a GML document
* <li>a XML document
* <li>any other kind of document that is valid against the formats defined for GetRecord in the
* capabilities
* </ul>
*
* Each of these types can be identified by the mime-type of the response that is also passed to
* the method. <br>
* If something basic went wrong it is possible that not further specified kind of object is
* passed as response. In this case the method will throw an
* <tt>InvalidParameterValueException</tt> to avoid sending bad responses to the client.
*
* @param service service which produced the response (WMS, WFS ...)
* @param response
* @param mime mime-type of the response
* @param user
* @return the response array
* @throws InvalidParameterValueException
*/
@Override
public byte[] validateResponse(String service, byte[] response, String mime, User user)
throws InvalidParameterValueException {
Request req = policy.getRequest(service, "GetRecord");
// request is valid because no restrictions are made
if (req.isAny() || req.getPostConditions().isAny()) {
return response;
}
// Condition condition = req.getPostConditions();
if (MimeTypeMapper.isKnownOGCType(mime)) {
// if the mime-type isn't an image type but a known
// OGC mime-type it must be an XML document.
// probably it is an exception but it also could be
// a GML document
response = validateXML(response, mime, user);
} else if (mime.equals("text/xml")) {
// if the mime-type isn't an image type but 'text/xml'
// it could be an exception
response = validateXML(response, mime, user);
} else {
throw new InvalidParameterValueException(UNKNOWNMIMETYPE + mime);
}
return response;
}
/**
* Sends the result of a someWPVService.doService( request ) bacn to the client
*
* @param httpResponse the response object used to pipe the result
* @param getViewResponse the actua result to be sent
*/
private void sendGetViewResponse(
HttpServletResponse httpResponse, GetViewResponse getViewResponse) {
LOG.entering();
String mime = MimeTypeMapper.toMimeType(getViewResponse.getOutputFormat());
httpResponse.setContentType(mime);
// GetView response is, for the time being, always an image
writeImage((Image) getViewResponse.getOutput(), httpResponse, mime);
LOG.exiting();
}
// TODO common to WMS
private void sendExceptionImage(
HttpServletResponse httpResponse, OGCWebServiceException e, GetView request) {
Dimension d = request.getImageDimension();
BufferedImage bi = new BufferedImage(d.width, d.height, BufferedImage.TYPE_INT_RGB);
Graphics g = bi.getGraphics();
g.setColor(Color.WHITE);
g.fillRect(0, 0, d.width, d.height);
g.setColor(Color.BLUE);
String s = e.getLocator();
String location = s != null ? s : "Unknown";
s = e.getMessage();
String message = s != null ? s : "Unknown reason!";
g.drawString(location, 5, 20);
g.drawString(message, 15, 50);
String mime = MimeTypeMapper.toMimeType(request.getOutputFormat());
g.dispose();
writeImage(bi, mime, httpResponse);
}
