Hi,
well, I can use DTO but AFAIK, it would be a bad design decision to use
them, because it would basically mean that I have to copy all my
DOM-objects. So if there changes in the DOM, the DTOs would have to be
manually updated. Apart from that, it would mean:
Hibernate -> DAO -> Business layer -> covertDOMToDTO -> DTO -> View
and then in case of an update:
View -> DTO -> Business layer -> convertDTOtoDOM -> DAO -> update()
-> IMO, lots of trouble, an additional error risk and poorer performance.
That's why I thought, it would be prudent to avoid using DTOs.
Tom
Marco Mistroni wrote:
Hello,
Any reason of why you can't use DTOs?
Your domain objects and dto could implement the same interface..
HTH
marco
-----Original Message-----
From: Tom Ziemer [mailto:[EMAIL PROTECTED]
Sent: 30 November 2005 14:26
To: Struts Users Mailing List
Subject: slightly [OT] Hibernate and domain objects in web apps
Hi,
I have got a little problem with Hibernate - well actually it is only
partially related to it:
My app uses Spring + Hibernate (lazy loading), but should I return the
value beans (dom) from Hibernate to my Struts actions? If I do this, I'd
have to deal with LazyInitializationExceptions for collections that have
been lazy-loaded. In my opinion, this would be a horrible design because
the view would have to know about the data access tier. On the other
hand, I've read, that "DTOs are evil" - but how can I solve this problem
without DTOs?
I am sure, lots of you are using
Hibernate/{YOUR_LIST_OF_OTHER_GREAT_FRAMEWORKS_HERE}/Struts and I'd be
grateful for any help.
Thanks,
Tom
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