Because it is transient:
https://gist.github.com/jonnywray/636875#file-futureupdatebehavior-java-L19
After deserialization it will be null.
Martin Grigorov
Wicket Training and Consulting
On Mon, Feb 3, 2014 at 10:33 AM, vp143 <vishal.po...@cipriati.co.uk> wrote:
> Martin Grigorov-4 wrote
> > Hi,
> >
> > Create a panel that has a child an image (the busy indicator).
> > Add a timer behavior to this panel and check whether the slow operation
> is
> > done and replace the image with another component that renders the new
> > data:
> >
> > public void onTimer(AjaxRequestTarget target) {
> > Data newData = getNewData();
> > if (newData != null)
> > {
> > NewComponent c = new Component(image.getId(), newData);
> > image.replaceWith(c);
> > target.add(c);
> > }
> > else {
> > // target.appendJavaScript("still waiting ...");
> > }
> >
> > }
> >
> > Martin Grigorov
> > Wicket Training and Consulting
>
> Thanks Martin!
> This pattern seems very similar to
> https://gist.github.com/jonnywray/594468 and
> https://gist.github.com/jonnywray/636875
> which I have seen referenced in some posts here.
>
> While trying these, I am finding in FutureUpdateBehavior, onTimer(), the
> line if(future.isDone()) is null most times (not all).
>
> I am not quite sure why this would be.
> When it is null, the constructor value passed through is not null, but is
> null within onTimer.
>
> Any ideas on this?
>
> --
> View this message in context:
> http://apache-wicket.1842946.n4.nabble.com/AjaxLazyLoadPanel-loading-asynchronously-tp4664035p4664140.html
> Sent from the Users forum mailing list archive at Nabble.com.
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org
> For additional commands, e-mail: users-h...@wicket.apache.org
>
>
