[Springframework-developer] RE: Reworkings and new features

[Chris N. <ch...@si...>]

jürgen höller [werk3AT] wrote:
> Essentially, this isn't different from normal business and data access
> code based on Spring: Fatal runtime exceptions like DataAccessException or
> TransactionExceptions should not be handled by application code but always
> be propagated to the surrounding transaction or data access template. I
> don't see why views are different in that respect, but maybe I just don't
> get the point...

It can lead to broken pages if the exception occurs after the view writes
enough to cause a flush of the underlying response buffer. Either you get
half a page with an appended stack trace or you have to do some tricks to
close all open tags and write out a meta tag to redirect.

For these reasons I agree it is better to avoid "open session in view" but
in practice it can be difficult to make sure all of the lazy-loading
objects in your model have been initialized.

Chris