Igor,
Are you sure that will work? I don't think that SmallComponent's
initModel method is ever called, because when the Label that is part
of SmallComponent is searching for a model (in Component.initModel),
it invokes the getModelImpl method of SmallComponent, which doesn't
call initModel. (The comment in the code says "Don't call getModel()
that could initialize many in-between useless models."
W
On Feb 15, 2009, at 12:23 PM, Igor Vaynberg wrote:
public class smallcomponent extends component {
protected imodel initmodel() {
imodel model=super.initmodel();
return new compoundpropertymodel(model);
}
}
-igor
On Sun, Feb 15, 2009 at 8:19 AM, Willis Blackburn <[email protected]>
wrote:
Hello,
I have a situation that keeps coming up. All of my solutions have
seemed
clumsy, which makes me think that there's a better way of
approaching this
that I just haven't figured out. Can someone point me in the right
direction?
What I want is to have a Page that uses CompoundPropertyModel, and
then
include a component on that page that also uses
CompoundPropertyModel. So
roughly it looks like this:
public class BigObject {
public SmallObject get SmallObject() { ... }
}
public class SmallObject {
public String getName() { ... }
}
public class BigPage {
public BigPage(BigObject object) {
setModel(new CompoundPropertyModel(object));
add(new SmallComponent("smallObject"));
}
}
public class SmallComponent {
public SmallComponent() {
add(new Label("name"));
}
}
If I try to do just this, then I get an error because the label
that's part
of SmallComponent finds the BigPage model and fails because there's
no
property of BigObject called name.
So obviously SmallComponent needs some model:
public class SmallComponent {
public SmallComponent(IModel model) {
setModel(new CompoundPropertyModel(model));
add(new Label("name"));
}
}
But what model to give it? I tried passing it new
ComponentPropertyModel("smallObject"), which didn't work because
ComponentPropertyModel implements IComponentAssignedModel and thus
can't be
directly wrapped in CompoundPropertyModel. Adding a call to wrap()
in the
SmallComponent constructor fixed the problem, but I'm not sure if I
can just
call wrap and carry on or if there will be some unforeseen
consequence of
that down the road. Is there a standard way of doing this?
Thanks,
Willis
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