Here is the same pseudo code, but now laid out for better readability.
I appreciate any background before I file this as a bug.
-- The data classes
class Course {...}
class Person { List addresses; ...getter/setters.. }
class Address { String street; String city; ...getter/setters... }
-- The components
class MyPage extends Page {
public MyPage(...) {
...
// setting a *Course* as model object
setModel(new CompoundPropertyModel(new Course(...)));
add(new MyPanel(...));
}
}
class MyPanel extends Panel {
public MyPanel(...) {
// setting a *Person* as model object
setModel(new CompoundPropertyModel(new Person()));
add(new ListView("addresses")) {
protected void populateItem(ListItem item) {
// assertion succeeds, model object is an *Address*
assert item.getModelObject() instanceof Address;
// *WicketException* during rendering phase
item.add(new Label("street"));
}
}
}
}
--The problem.
The assert in the method populateItem holds. However, the label will try
to get the "street" property from a _Course_ instance. I expected it to
get the property from the _Address_ instance that was also seen in the
assert.
--A possible cause.
If you debug the method onComponentTagBody() in Label(), you eventually
see that the parent of the Label is a ListItem, but the parent of the
ListItem is MyPage! I expected the parents to be a ListView, and then a
MyPanel and only then a MyPage.
I am missing something or is this a bug?
Regards,
Erik.
--
Erik van Oosten
http://day-to-day-stuff.blogspot.com/
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