public  void destroy() 
{
        listView = null;
        editView = null;
        super.destroy();
}

 protected  void doView(RenderRequest renderRequest,
    RenderResponse renderResponse) throws IOException, PortletException 
{
        if (WindowState.MINIMIZED.equals(renderRequest.getWindowState())) {
            return;
        }
        try {
            String mode = renderRequest.getParameter(MODE_KEY);
            if (mode == null || mode.equals("")) {
                mode = LIST_MODE;
            }
            if (mode.equals(LIST_MODE) && renderRequest.getParameter("name") != null) {
                mode = EDITING_MODE;
            }
            if (mode.equals(LIST_MODE)) {
                renderList(renderRequest, renderResponse);
            } else if (mode.equals(EDIT_MODE)) {
                AliasesData data = new AliasesData(renderRequest.getParameter("name"), renderRequest.getParameter("aliases"));
                renderEdit(renderRequest, renderResponse, data);
            } else if (mode.equals(REMOVE_MODE)) {
                AliasesData data = new AliasesData(renderRequest.getParameter("name"), renderRequest.getParameter("aliases"));
                renderRemove(renderRequest, renderResponse, data);
            } else if (mode.equals(EDITING_MODE)) {
                AliasesData data = new AliasesData(renderRequest.getParameter("name"), renderRequest.getParameter("aliases"));
                renderEditing(renderRequest, renderResponse, data);
            }
        } catch (Throwable e) {
            log.error("Unable to render portlet", e);
        }
}

 public  void init(PortletConfig portletConfig) throws PortletException 
{
        super.init(portletConfig);
        kernel = KernelRegistry.getSingleKernel();
        try {
            instance = kernel.getGBean(ExplicitDefaultArtifactResolver.class);
        } catch (GBeanNotFoundException e) {
            throw new PortletException(e);
        } catch (InternalKernelException e) {
            throw new PortletException(e);
        } catch (IllegalStateException e) {
            throw new PortletException(e);
        }
        listView = portletConfig.getPortletContext().getRequestDispatcher(LIST_VIEW);
        editView = portletConfig.getPortletContext().getRequestDispatcher(EDIT_VIEW);
}

 public  void processAction(ActionRequest actionRequest,
    ActionResponse actionResponse) throws PortletException, IOException 
{
        String mode = actionRequest.getParameter(MODE_KEY);
        if (mode == null) {
            mode = "";
        }
        actionResponse.setRenderParameter(MODE_KEY, mode);  
        String name = actionRequest.getParameter("name");
        if (name != null) {
            actionResponse.setRenderParameter("name", name); 
        }
        String aliases = actionRequest.getParameter("aliases");
        if (aliases != null) {
            actionResponse.setRenderParameter("aliases", aliases);
        }
}