Did this ever get fixed or an acceptable response as I am running into the
same issue. A very non-descriptive error: undefined... That is when i try
and serialize and send the results of ListDataProvider.getList() which I
thought was a list of my data objects.
On Thursday, July 14, 2011 4:45:07 AM UTC-4, gwernol wrote:
>
> I'm using the ListDataProvider. I can write code like:
>
> public class MyListPanel extends VerticalPanel {
> private TextCell textCell = new TextCell();
> private CellList<String> cellList = new
> CellList<String>(textCell);
> private ListDataProvider<String> dataProvider = new
> ListDataProvider<String>();
>
> private void createUI() {
> ScrollPanel scrollPanel = new ScrollPanel();
> scrollPanel.setSize("100%", "5em");
>
> dataProvider.addDataDisplay(cellList);
>
> scrollPanel.setWidget(cellList);
> add(scrollPanel);
> }
>
> public List<String> getList() {
> return dataProvider.getList();
> }
>
> public addToList(String item) {
> System.out.println("addToList: item=" + item);
> dataProvider.getList().add(item);
> System.out.println("item is now "
> +dataProvider.getList());
> }
> }
>
> If I call myListPanel.addToList("dan"), then the list is updated as
> expected, but, the System output is something like:
>
> addToList: item=dan
> addToList: list is now com.google.gwt.view.client.ListDataProvider
> $ListWrapper@7755c16a
>
> Note that dataProvider.getList() is returning a ListWrapper not a
> List<String>.
>
> Elsewhere my code calls myListPanel.getList() and puts the returned
> "array" into a List<String> field an object that I pass back to the
> server. This of course results in a Serialization Exception, as the
> object should contain a List<String> but actually contains a
> ListWrapper.
>
> The JavaDoc says that:
>
> public java.util.List<T> getList()
> Get the list that backs this model. Changes to the list will be
> reflected in the model.
>
> This is clearly not true. Is this bug going to be fixed? At the very
> least the documentation should be updated asap as its misleading right
> now.
>
> Thanks,
>
> Dan
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