Hi,
I'm afraid I don't quite understand.
First a little more on my problem:
I have a page with at table where each row contains the status of a task and
a commandLink to execute that task (a bit simplified). When ever that page
is refreshed it re-displays all tasks and their current status.
My problem now is that when I click the commandLink, the page hangs waiting
for the action method to finish. I was hoping for an easy way to just tell
tell the browser via the response to go to a page (the same page in this
case), without the action method finishing its execution.
How can I have a refresh trigger a JSF action in plain JSF (without using
shale viewcontroller)?
Thanks,
Mike
On 09/02/07, Mike Kienenberger <[EMAIL PROTECTED]> wrote:
Right. I'm saying that you only use the refresh as a one-time timer
rather than an ongoing thing.
You start at a page that is set to refresh.
The refresh triggers a normal JSF action.
The JSF servlet returns back an equivalent auto-refreshing page.
Repeat until the action returns back a different page.
On 2/9/07, Mikael Andersson <[EMAIL PROTECTED]> wrote:
> The browser keeps waiting for the action method to finish (when
submitting),
> that is why I thought it might be possible to force a redirect/forward
> programmatically so the action could do its length computation and the
> progress page could be redisplayed (without starting a new thread).
>
> - mike
>
>
> On 08/02/07, Mike Kienenberger <[EMAIL PROTECTED]> wrote:
> > If it were me, I'd look at having a meta-refresh tag submit a normal
> action.
> > The action would check the status of the background process, and
> > either return the "in progress" page again or return the "action
> > completed" page.
> >
> > You shouldn't need to anything strange like try to short-circult the
> > JSF lifecycle or manually construct a response.
> >
> > On 2/8/07, Mikael Andersson < [EMAIL PROTECTED]> wrote:
> > > Looking for some more suggestions :), I would prefer not to use ajax
> since
> > > it is quite a simple page.
> > >
> > > I have tried some more (hacky) stuff which didn't work either :( :
> > >
> > > The below changed the location URL, but don't load the page?? Any
ideas.
> > >
> > > public static void programmaticForward2( final String viewId )
throws
> > > IOException{
> > > FacesContext faces = FacesContext.getCurrentInstance();
> > > HttpServletResponse response = (HttpServletResponse)
> > > faces.getExternalContext().getResponse();
> > >
> > > response.setContentType("text/html");
> > > response.setHeader("Location", "http://localhost:8080/dss "
> > > +viewId);
> > >
> > > faces.responseComplete();
> > > response.getOutputStream().flush();
> > > response.getOutputStream().close();
> > >
> > > }
> > >
> > > The below didn't do anything?
> > >
> > > public static void programmaticForward3( final String viewId )
throws
> > > IOException{
> > > FacesContext faces = FacesContext.getCurrentInstance();
> > > HttpServletResponse response = (HttpServletResponse)
> > > faces.getExternalContext().getResponse();
> > > HttpServletRequest request =
> > >
> (HttpServletRequest)faces.getExternalContext().getRequest();
> > >
> > > PrintWriter out = response.getWriter();
> > >
> > > response.setContentType("text/html");
> > > response.sendRedirect("http://"; +request.getServerName()
+":"
> > > +request.getServerPort() +"/dss" +viewId);
> > >
> > > faces.responseComplete();
> > > out.flush();
> > > out.close();
> > >
> > > }
> > >
> > > Cheers,
> > > Mike no.2
> > >
> > >
> > >
> > > On 07/02/07, Mike Kienenberger <[EMAIL PROTECTED]> wrote:
> > > > Here's an ajax solution for a progress bar:
> > > >
> > > >
> > >
>
http://weblogs.java.net/blog/edburns/archive/2005/05/ajaxian_faces_p.html
> > > >
> > >
>
https://blueprints.dev.java.net/bpcatalog/ee5/ajax/usingAJAXwithoutJSF.html
> > > >
> > > > Seems like there should be a way to solve this without ajax,
though.
> > > > Maybe using a meta refresh.
> > > >
> > > >
> > > > On 2/7/07, Mikael Andersson < [EMAIL PROTECTED]> wrote:
> > > > > Hi,
> > > > > I have an action which performs a length operation, I'd like to
get
> the
> > > > > browser to redisplay the page while the process keeps running on
the
> > > server.
> > > > >
> > > > > I wonder how I perform a programmatic forward which in an action
> method,
> > > > > which causes the browser to re-render the page while the action
> method
> > > is
> > > > > still running.
> > > > >
> > > > > Is there a way of doing this without spawning a new Thread?
> > > > >
> > > > > I made the following futile attempt :
> > > > >
> > > > > Managed bean:
> > > > >
> > > > > public String longishRunningAction(){
> > > > >
> > > > > try{
> > > > > NavigationUtil.programmaticForward
> > > > > ("/report/index.xhtml");
> > > > > }
> > > > > catch(Exception e){}
> > > > >
> > > > > doLongishRunningOperation();
> > > > >
> > > > > return null;
> > > > > }
> > > > >
> > > > >
> > > > > Some of the stuff in here were added just to see if the made a
> > > difference,
> > > > > they didn't :)
> > > > >
> > > > > public class NavigationUtil {
> > > > >
> > > > > /**
> > > > > * Force a forward programmatically
> > > > > *
> > > > > * @param viewId the viewId to forward to, ex.
> /report/index.xhtml
> > > > > * @throws ServletException
> > > > > * @throws IOException
> > > > > */
> > > > > public static void programmaticForward( final String viewId
)
> throws
> > > > > ServletException, IOException{
> > > > >
> > > > > ExternalContext eCtx =
> > > > > FacesContext.getCurrentInstance().getExternalContext();
> > > > > HttpServletRequest request =
> > > > > (HttpServletRequest)eCtx.getRequest();
> > > > > HttpServletResponse response =
> > > > > (HttpServletResponse)eCtx.getResponse();
> > > > > RequestDispatcher dispatcher =
request.getRequestDispatcher(
> > > viewId
> > > > > );
> > > > >
> > > > > dispatcher.forward(request,response);
> > > > >
> > > > > FacesContext.getCurrentInstance().responseComplete();
> > > > >
> > > > > response.getOutputStream().flush();
> > > > > response.getOutputStream().close();
> > > > >
> > > > > }
> > > > >
> > > > > }
> > > > >
> > > > >
> > > >
> > >
> > >
> >
>
>
