[CAUSEWAY-3269] Selecting the empty item from the choices of an optional parameter throws exception

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.0.0-M9
• Fix Version/s: 2.0.0-RC1
• Component/s: Viewer Wicket
• Assignee: Andi Huber
• Reporter: Zermelo
• Created: 02/Nov/22 19:20
• Updated: 16/Nov/22 07:31
• Resolved: 09/Nov/22 06:52

Description

In wicket viewer, selecting the empty (none) item from the select box (choices) of an optional action parameter throws an exception. I experience it both with Enum parameters and String parameters.

To test it, you can add this snippet to SimpleObjects.java in SimpleApp.

public enum SomeOption {A, B, C}

@Action
public void a1(@Parameter(optionality = Optionality.OPTIONAL) SomeOption someOption) {

}

@Action
public void a2(@Parameter(optionality = Optionality.OPTIONAL) String someOption) {

}

@MemberSupport
public List<String> choices0A2() {
    return Arrays.asList("A", "B", "C");
}