FilterManager filterManager = (FilterManager) window.getAttribute(PortalReservedParameters.PORTLET_FILTER_MANAGER_ATTRIBUTE);
window.removeAttribute(PortalReservedParameters.PORTLET_FILTER_MANAGER_ATTRIBUTE);
if (PortletWindow.Action.ACTION.equals(window.getAction()))
{
ActionRequest actionRequest = (ActionRequest)window.getPortletRequest();
ActionResponse actionResponse = (ActionResponse)window.getPortletResponse();
if (filterManager != null)
{
filterManager.processFilter(actionRequest, actionResponse, portletInstance, portletConfig.getPortletContext());