Steve, Good point about the clue in the stacktrace! But it is not a NPE: rather an IllegalArgumentException. I believe what is null is not the Entity but rather its properties (i.e. Strings in my case).
What puzzles me is that it worked upon page refresh but not upon first call to the page!! I am still new to Tapestry and I am trying to find my way around all the Events/Phases/etc. I come from JSF which is a very nice framework but no way as developer-friendly and smooth and unobtrusive as T5!! Regards, Julien. 2011/10/22 Steve Eynon <steve.ey...@alienfactory.co.uk> > Oh yeah, re-looking, the clue was in the stacktrace: > > > Render queue error in BeginRender > > meaning you needed to load your entity sometime before that phase - > i.e. setupRender() > > I don't what was causing the NPE though, loading your entity in > onPrepareForRender() should have been okay. Looks like it's something > do with T5's JSR-303 but I've never used it myself. > > Dunno if anyone else has any ideas? > > Steve. > > > On 22 October 2011 23:50, Julien Martin <bal...@gmail.com> wrote: > > Steve, > > It works with @SetupRender > > Thanks!! > > > > 2011/10/22 Steve Eynon <steve.ey...@alienfactory.co.uk> > > > >> > Thanks for your reply Steve, > >> > >> No worries, I know how frustrating it can be when no one answers! > >> > >> > I was not able to find any such EventConstant > >> > >> SetupRender is not an component event, it's a um, render phase! See > here: > >> http://tapestry.apache.org/component-rendering.html > >> > >> Essentially rename your method to void setupRender() - note how it > >> doesn't begin with onXXX - or annotate it with @SetupRender > >> > >> The Form generates the PREPARE_FOR_RENDER event during its beginRender > >> phase so I'd be surprised if it makes a difference - but you never > >> know. I tend to do all my setup in the setupRender() and maybe a > >> little in onPrepareForSubmit(). > >> > >> > My ChildMinderAccount is a JPA entity > >> > >> Ah - okay. I'd look around this area - I don't know much about JPA but > >> I'd check stuff like your transaction boundaries to ensure your obj is > >> fully inflated after it's loaded. > >> > >> Steve. > >> > >> On 22 October 2011 21:50, Julien Martin <bal...@gmail.com> wrote: > >> > Thanks for your reply Steve, > >> > > >> > I am also surprised because I am actually trying to follow an example > >> taken > >> > from Igor's book. My ChildMinderAccount is a JPA entity that extends > an > >> > abstract Account class. > >> > > >> > Regarding your suggestion of using the setuprender phase, I was not > able > >> to > >> > find any such EventConstant in the Tapestry API... > >> > > >> > Regards, > >> > > >> > J. > >> > > >> > 2011/10/22 Steve Eynon <steve.ey...@alienfactory.co.uk> > >> > > >> >> Nothing there I can see that's obvious... What does your > >> >> ChildminderAccount look like? > >> >> > >> >> Creating it in the PREPARE_FOR_RENDER event should be fine - but you > >> >> could always try creating it the SetupRender() render phase - see if > >> >> it's any different. > >> >> > >> >> Steve. > >> >> > >> >> > >> >> > >> >> On 22 October 2011 20:50, Julien Martin <bal...@gmail.com> wrote: > >> >> > ChildminderAccount > >> >> > >> >> --------------------------------------------------------------------- > >> >> To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org > >> >> For additional commands, e-mail: users-h...@tapestry.apache.org > >> >> > >> >> > >> > > >> > >> --------------------------------------------------------------------- > >> To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org > >> For additional commands, e-mail: users-h...@tapestry.apache.org > >> > >> > > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org > For additional commands, e-mail: users-h...@tapestry.apache.org > >
