String portletId = portletHolder.getPortletId();
StringBuffer sb = new StringBuffer(portletId).append("_").append("mode");
String mode = request.getParameter(sb.toString());
if (mode != null) {
try {
PortletMode portletMode = new PortletMode(mode);
portletHolder.setPortletMode(portletMode);
} catch (PortletModeException pme) {
pme.printStackTrace();
}
}