it seems like template.getQuestions() returns a model which has a
QuestionAndAnswer instance instead of a list as its model object.. The code
on the line where the exception is thrown is:
return ((List)listView.getModelObject()).get(index);
which indicates that your problem is trying to cast a QuestionAndAnswer
instance to a List. Everyone is using ListView and it cannot be broken this
way :)
Pieter Claassen wrote:
>
> I am getting a classcast exception in ListView that is stumping me.
>
> This is the error message (top few lines)
>
> WicketMessage: Error attaching this container for rendering:
> [MarkupContainer [Component id = questioneditform]]
>
> Root cause:
>
> java.lang.ClassCastException: com.musmato.model.QuestionAndAnswer
> at
> org
> .apache
> .wicket.markup.html.list.ListItemModel.getObject(ListItemModel.java:55)
> at org.apache.wicket.Component.getModelObject(Component.java:1558)
> at com.musmato.wicket.pages.templates.TemplateEditPage$QuestionEditForm
> $1.populateItem(TemplateEditPage.java:93)
>
>
> This is the code that generates my ListItems:
>
> ListView questions = new ListView("questions", template
> .getQuestions()) {
>
>
> @Override
> protected void populateItem(ListItem item) {
> final QuestionAndAnswer qanda =
> (QuestionAndAnswer) item
> .getModelObject();
> setModel(new
> CompoundPropertyModel(qanda));
>
>
>
> I know for a fact that template.getQuestions() produces an ArrayList.
>
> The arraylist works when there is only 1 item in it but when I have
> more than 1 item, it fails with the ClassCastException. Is this a
> wicket problem or am I doing something wrong?
>
> Regards,
> Pieter
> pieter claassen
> [EMAIL PROTECTED]
>
>
>
>
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