RE: [Springframework-developer] Pre-binding validation

[Daniel M. <mi...@pa...>]

Hi Seth,

> Please point out my error(s) here if I have made one or many.
>
> One potential solution (inspired by above mentioned post):
> Create a RequestWrapper that can be validated just like the persistent
> object to which the request will be bound (I realize this could be messy
> because it is essentially reverse reflection aka emulation). Then invoke
the
> validator substituting the wrapped request for the actual object _before_
> binding.

>Great thinking, Daniel.  I've always used a Command/FormBean because
often the web workflow doesn't match up to the domain objects close
enough.  But you're right, I wouldn't want any flush() to happen until
after validation.

>For this scenario to happen, a call to find() or iterate() would have to
be called /on the session for this request/, correct?  Assuming a usual
setup of one session for the request, and the request itself is not
multithreaded, how would this condition arise?

After validation failure: processFormSubmission() -> showForm() ->
referenceData() which could load objects from the database using a find() or
iterate().

Thanks for the quick feedback.
Daniel

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