Hi, I'm trying to make a project using Hibernate, Spring and Wicket.
I am have some conceptual difficulties. Would love if someone could
share their knowledge or point me in the right direction.
One thing I am struggling with is where I should put my DAO's and data
services. I know about the @SpringBean annotation for components, but
how should I use those in classes such as DetachableXXXModel? Should
I pass the DAO's I need to that class or should I put DAO's in the
application object (like Pro Wicket examples do)?
Is there a good Wicket example project I can look at, besides phonebook,
that uses Spring and Hibernate? I am interested in the right set-up.
I also have some questions about OpenSessionInViewFilter, which probably
are off-topic, but hope someone wants to help anyway.
There seems to be quite some disagreements about whether using
OpenSessionInViewFilter is a good thing or not. What does the Wicket
team/users
think about it?
If I understand correctly, and please correct me if I'm wrong,
by using the OpenSessionInViewFilter you get a new transaction at the start
of every request, which commits or rollbacks at the end.
This is so that lazy associations, which are accessed outside explicit
transactions,
such as in Wicket Page classes, are initialized and don't throw an
exception.
So what kind of transaction exactly is created by the
OpenSessionInViewFilter?
(propagation, isolation?)
Can I use it only for reading?
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