How to use

getHeaders

method

in

org.geoserver.ows.Response

/**
 * See if we have to add cache control headers. Won't alter them if the response already set
 * them.
 */
public String[][] getHeaders(Object value, Operation operation) throws ServiceException {
  String[][] headers = delegate.getHeaders(value, operation);
  if (headers == null) {
    // if no headers at all, add and exit
    return new String[][] {{HttpHeaders.CACHE_CONTROL, "max-age=0, must-revalidate"}};
  } else {
    // will add only if not already there
    Map<String, String> map = (Map) ArrayUtils.toMap(headers);
    map.putIfAbsent(HttpHeaders.CACHE_CONTROL, "max-age=0, must-revalidate");
    headers = new String[map.size()][2];
    int i = 0;
    for (Map.Entry<String, String> entry : map.entrySet()) {
      headers[i][0] = entry.getKey();
      headers[i][1] = entry.getValue();
      i++;
    }
  }
  return headers;
}

String[][] headers = response.getHeaders(result, opDescriptor);
boolean contentDispositionProvided = false;
if (headers != null) {

@Override
public String[][] getHeaders(Object value, Operation operation) throws ServiceException {
  return response.getHeaders(value, operation);
}