You can keep the transient account beans in an list on your LDM, and add
then to your Employee property on every load...
LDM{
List transientAccounts;// get serialized with LDM
load(){
Employee e = service.search(id);
e.add(transientAccounts);
}
}
On Tue, Nov 10, 2009 at 6:31 PM, Pieter Degraeuwe <
pieter.degrae...@systemworks.be> wrote:
> Thanks for your reply. In some situations your solution might be
> sufficient,
> but in my situation I'm affraid not...
>
> I cannot commit an empty Account in the db due constraint reasons. And, I
> actually only want to save the Employee in the database when the user
> presses the ' Save' button, not when he is adding/ modifying some Accounts.
> (So, in other words, the user can always 'Cancel' his actions...
>
>
>
> On Tue, Nov 10, 2009 at 9:16 PM, pieter claassen
> <pieter.claas...@gmail.com>wrote:
>
> > Hi Pieter,
> >
> > I don't use Hibernate, but db4o. The principle however might help you.
> >
> > I inject my factory methods into my pages using Spring (but that is a
> > minor detail) and when I make a change to a domain object, I always
> > store the object first before reloading the page (or in this case,
> > rendering the ajax changes). When the page reloads, it loads the
> > modified object from the database. This is important to also ensure
> > your domain objects are persisted otherwise, they might still hang
> > around in wicket, but might not be stored in the db.
> >
> > So you need to do something like
> >
> > public void onClick(AjaxRequestTarget target){
> > employee. addAccount(new Account());
> > employeeFactory.store(employee);
> > ...
> > }
> >
> >
> > Rgds,
> > Pieter
> >
> > On Tue, Nov 10, 2009 at 9:00 PM, Pieter Degraeuwe
> > <pieter.degrae...@systemworks.be> wrote:
> > > Hi,
> > >
> > > I can't imagine that I'm the only one with the following situation.
> > >
> > > I have a page which edits an 'Employee'. Since I use hibernate and
> spring
> > I
> > > use the LDM togeather with the OpenSessionInView.
> > > This works great (==No more LazyLoadExceptions at all...)
> > >
> > > But.... The Employee has a propertie accounts, which is a collection of
> > > Account objects. I'm showing these objects using a Listview.
> > > Now I want to add an Ajax link ('Add new account), which adds a fresh
> new
> > > Account object. I add the containing form to the AjaxRequestTarget so
> the
> > > ListView refreshes.
> > >
> > > Unfortunately, this approach never works, since my Employee is always
> > > reloaded from the database each reques.
> > >
> > > (I even think the same problem shows up when you do the same without
> > ajax..)
> > >
> > > What is the best approach to deal with this?
> > >
> > > --
> > > Pieter Degraeuwe
> > > Systemworks bvba
> > > Belgiëlaan 61
> > > 9070 Destelbergen
> > > GSM: +32 (0)485/68.60.85
> > > Email: pieter.degrae...@systemworks.be
> > > visit us at http://www.systemworks.be
> > >
> >
> >
> >
> > --
> > Pieter Claassen
> > musmato.com
> >
> > ---------------------------------------------------------------------
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> > For additional commands, e-mail: users-h...@wicket.apache.org
> >
> >
>
>
> --
> Pieter Degraeuwe
> Systemworks bvba
> Belgiëlaan 61
> 9070 Destelbergen
> GSM: +32 (0)485/68.60.85
> Email: pieter.degrae...@systemworks.be
> visit us at http://www.systemworks.be
>
--
Pedro Henrique Oliveira dos Santos
