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Le samedi, 19 Juin 2004 14.45, T E Schmitz a �crit�:
> Further to our discussion about a Torque/Swing framework I happened upon
> an article about building GUIs from BusinessObjects:
> http://www.javaworld.com/javaworld/jw-01-2004/jw-0102-toolbox_p.html
Very interesting article ! Thanks for the link !
I probably need some more thinking on the subject. They are a few points
that are not fully clear for me yet ... I dont understand (yet) how you can
use this pattern with a "load and edit" process. That is : usually in a
client side application, you load data from a database, modify it and save
it. The pattern proposed in the article propose 2 different builders for
input and output. In a Swing application, quite often, you use the same field
to display a value and edit it. So both builders have to share the fields (or
you should use only one builder to do the export and import concerns). That
seems to be manageable without to many problems.
Second problem : in a "load and edit" app, the import is started by the UI
and not by the Buisness object. This cant be done in the constructor. We
could maybe modify the pattern and extend the Buisness object to impements a
"saveable" interface that would be triggered from the builder ... but that
implies a bidirectionnal relation between the buisness object and the builder
(the builder has to trigger the update AND the objecttakes its data from the
builder) which isnt that clean ... I have to think some more ...
Third problem : all builders have very similar code ... very easy code in
the example, but I'm very lazzy (ok, if I was coding instead of writing here
I would already be done ...). I have the intuition we could do even
better ...
Thanks for the very interesting article !
Guillaume
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