--- "Masters.Robert" <[EMAIL PROTECTED]>
wrote:
>
> You mention that you use an Object Database and that
> it does not allow you
> to distinguish between your data and GUI? I try to
> shy away from the term
> "data" as data does an injustice to what Objects
> are, however I'm at a loss
> as to why an OO database would cause you to
> implement tight coupling with
> the GUI. To me this sounds like a design issue??
>
PSE-pro annotates every persistence-capable and
persistence-aware classes. If your GUI uses any
shuch class, it has to be annotated. You have to
import it class in your source code.
I do not know if it is a design issue of the product
or a design issue of Object Database. For my
understanding, OD is a image of the memory of your
java program, so your GUI variable (object) has to
map to your hard disk.
I want my gui independent from database, so I can
use both Rdb and Odb. So I created two objects for
each business entity: one for database, one for
memory. I have to trasfer data between them.
Now, I am working on EJB and find that
I can uses interface instead of real object to gain
independency. The price I pay is: I do not have
business object on client side (only have an
interface). The business entity lives and can only
live inside of a container.
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