What is then the difference?
The only thing a model really does it getting the modelObject. So what you put in that can be an existing one or just a new Room()
Please give a better usecase for this
For now replacing models isn't needed.
And if you really want to get a model from the parent:
ParentModel extends Model
{
ParentModel(Component parentComponent)
protected Object onGetObject(final Component component)
{
return parentComponent.getModel().getModelObject();
}
}
ParentModel parentModel = new ParentModel(this);
Component childComponent = new ChildComponent("test", new PropertyModel(parentModel, "myproperty"))
or something like that.
On 9/14/05, Ralf Ebert <[EMAIL PROTECTED]> wrote:
Hi,
> no then it isn't
> But why are you changing a model itself?
> Why not just the data? A model itself shouldn't have to change
> after construction.
well, currently I have no use case for this, I just want to model
these dependencies in a way which reflect the things I want to
express. In these cases I want to be bound to a property of my parent
model and not to a property of a concrete model instance.
I could also think of some cases where changing the model is
neccessary. For example, if you have different ways to access the
data. Lets say we have a Room object. I have a NewRoomModel for
objects which are new and not saved. For editing saved objects I
would have a RoomModel, probably as LoadableDetachableModel. When a
new object is saved I would probably call setModel(...) on the parent
component because I need a new model instance.
If I got models right, I think there should be a convenient way to
bind models (especially CompoundPropertyModel's) dynamically to a
property of a parent CompoundPropertyModel.
Regards,
Ralf
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