https://issues.apache.org/jira/browse/WICKET-4321 this is the ticker I meant it suggests to restart the rendering completely for the whole page and this is not enough I'll see what kind of changes would be needed to accomplish this.
Martin Grigorov Wicket Training and Consulting https://twitter.com/mtgrigorov On Fri, Oct 10, 2014 at 2:29 PM, Martin Grigorov <[email protected]> wrote: > Hi, > > There is no support for this, even in 7.x. > I remember Carl-Eric Menzel asking for the same functionality before ... > Behavior#onException() sounds like something similar but there is no way > to suppress the bubbling of the exception at the moment. > The bigger problem is that the rendering can fail in the middle, i.e. the > component can have written some response already and then fail. If the > written response is proper HTML then it is OKish. But if some tag is not > closed then the rendering of the complete page may fail. > So if we try to add this functionality we will have to use temporary > Response objects for the rendering of each component to be able to throw > away whatever it has produced before failing. > > Usually the problem is related to the component's model. A workaround for > you could be to use a wrapper Model that returns "empty data" when the > underlying model throws an exception. > > Martin Grigorov > Wicket Training and Consulting > https://twitter.com/mtgrigorov > > On Fri, Oct 10, 2014 at 12:59 PM, Ernesto Reinaldo Barreiro < > [email protected]> wrote: > >> Hi, >> >> On Fri, Oct 10, 2014 at 11:50 AM, Tobias Gierke < >> [email protected]> wrote: >> >> > Hi, >> > >> >> Wouldn't it be possible to "embed" the failing prone porlets inside >> >> iframes so that each one is a Wicket page? >> >> >> > I already thought about this but the page uses quite a lot of fancy >> > CSS/Ajax/Javascript (portlets are rendered in a grid with configurable >> > row/column count, drag'n'drop to move them around etc.) and I'd rather >> not >> > touch the existing code if there's a Java-side only solution ;-) >> > >> >> I do not know of any :-( >> >> Another possibility is build each client entirely on JavaScript and use >> Wicket just as a service layer... not very Wicket like but you would not >> have this problem. >> >> >> > >> > Cheers, >> > Tobias >> > >> > >> >> On Fri, Oct 10, 2014 at 11:12 AM, Tobias Gierke < >> >> [email protected]> wrote: >> >> >> >> Hi, >> >>> >> >>> In our web application we have a dashboard-like homepage that >> displays a >> >>> number of user-configurable 'portlets' (which are really just ordinary >> >>> Wicket components and have nothing to do with the Portlet spec). I'm >> >>> looking for a way of preventing the application from becoming >> unusable in >> >>> case one or more of these portlets continuously fail to render >> because of >> >>> some internal error/bug. >> >>> >> >>> We're currently using a custom RequestCycleListener with the >> >>> onException() >> >>> method redirecting to a generic error page, thus when rendering of a >> >>> 'portlet' fails the user will never get to see the homepage and always >> >>> end >> >>> up on the error page - which is obviously not really desirable. >> >>> >> >>> Is there a way to to hook into Wicket's rendering cycle so that I can >> >>> provide some default markup in case rendering of a component (subtree) >> >>> fails with a RuntimeException ? >> >>> >> >>> I understand that this maybe be very tricky since the component >> subtree >> >>> might've rendered partially and thus internal state will be >> inconsistent. >> >>> It would probably require serializing the initial state of the >> component >> >>> (subtree) before rendering starts and reverting the wholle subtree to >> its >> >>> initial state once a RuntimeException is thrown. >> >>> >> >>> We're running Wicket 1.5.12. >> >>> >> >>> Thanks in advance, >> >>> Tobias >> >>> >> >>> -- >> >>> Tobias Gierke >> >>> Development >> >>> >> >>> VOIPFUTURE GmbH Wendenstraße 4 20097 Hamburg, Germany >> >>> Phone +49 40 688 900 164 Fax +49 40 688 900 199 >> >>> Email [email protected] Web http://www.voipfuture.com >> >>> CEO Jan Bastian >> >>> >> >>> Commercial Court AG Hamburg HRB 109896, VAT ID DE263738086 >> >>> >> >>> >> >>> >> >>> --------------------------------------------------------------------- >> >>> To unsubscribe, e-mail: [email protected] >> >>> For additional commands, e-mail: [email protected] >> >>> >> >>> >> >>> >> >> >> > >> > --------------------------------------------------------------------- >> > To unsubscribe, e-mail: [email protected] >> > For additional commands, e-mail: [email protected] >> > >> > >> >> >> -- >> Regards - Ernesto Reinaldo Barreiro >> > >
