Examples of javax.portlet.filter.EventFilter

javax.portlet.filter.EventFilter
The EventFilter is an object that performs filtering tasks on either the event request to a portlet, or on the event response from a portlet, or both.
Filters perform filtering in the doFilter method. Every Filter has access to a FilterConfig object from which it can obtain its initialization parameters, a reference to the PortletContext which it can use, for example, to load resources needed for filtering tasks.
Filters are configured in the portlet deployment descriptor of a portlet application. @since 2.0

    public void doFilter(EventRequest request, EventResponse response) throws IOException, PortletException {
        if (filterListIndex <filterList.size()){
            Filter filter = filterList.get(filterListIndex);
            filterListIndex++;
            try {
                EventFilter eventFilter = (EventFilter) loader.loadClass(filter.getFilterClass()).newInstance();
                FilterConfigImpl filterConfig = new FilterConfigImpl(filter.getFilterName(),filter.getInitParams(),portletContext);
                eventFilter.init(filterConfig);
                eventFilter.doFilter(request, response, this);
                eventFilter.destroy();
            } catch (InstantiationException e) {
                e.printStackTrace();
            } catch (IllegalAccessException e) {
                e.printStackTrace();
            } catch (ClassNotFoundException e) {

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    public void doFilter(EventRequest request, EventResponse response) throws IOException, PortletException {
        if (filterListIndex < filterList.size()) {
            Filter filter = filterList.get(filterListIndex);
            filterListIndex++;
            try {
                EventFilter eventFilter = (EventFilter) loader.loadClass(filter.getFilterClass()).newInstance();
                FilterConfigImpl filterConfig = new FilterConfigImpl(filter.getFilterName(), filter.getInitParams(),
                        portletContext);
                eventFilter.init(filterConfig);
                eventFilter.doFilter(request, response, this);
                eventFilter.destroy();
            }
            catch (InstantiationException e) {
                e.printStackTrace();
            }
            catch (IllegalAccessException e) {

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    {
        if (filterListIndex < filterList.size())
        {
            PortletFilterInstance filter = filterList.get(filterListIndex);
            filterListIndex++;
            EventFilter eventFilter = (EventFilter) filter.getRealPortletFilter();
            eventFilter.doFilter(request, response, this);
        }
        else
        {
            eventPortlet.processEvent(request, response);
        }

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      //
      int currentIndex = index++;
      try
      {
         PortletFilter filter = filters.get(currentIndex);
         EventFilter eventFilter = EventFilter.class.cast(filter);
         eventFilter.doFilter(req, resp, this);
      }
      finally
      {
         index--;
      }

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