On Nov 23, 2007 4:29 AM, Angelo Chen <[EMAIL PROTECTED]> wrote:
>
> lasitha wrote:
> >
> > Since the above events fire on both the original request and the one
> > from the redirect, you'll probably need a null check to differentiate:
>
> can you explain more about about this null
> check, any example why we have to check? thanks.
I should say first that i'm not sure this is best practice. It's sort
of obvious, rudimentary and not particularly elegant - if there's a
better way i hope someone will point it out.
@Persist("flash") Entity entity;
@Inject private Datastore datastore;
void onPrepare() {
if(entity == null)
entity = datastore.loadEntity();
else
datastore.reattach(entity);
}
* Datastore is my data-access service and reattach() just facades
Session.lock().
* As i mentioned earlier, onPrepare() is one of a few places you might
do this. I'd say as a general rule, the earlier in the request, the
better.
Cheers, lasitha
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