Question

Ok so I am really stuck now. I have a h:datatable and the only way to get the row details seems to be DataModel#getRowData(). Unfortunately ListDataModel which is needed to wrap the necessary data is NOT serializable so will not work on GAE, and I really need it to work! Does anyone have any idea about any workaround or some way to make it function.
Help much appreciated!

Answer 1

Mark the property transient (so that it will be skipped during serialization) and introduce lazy loading in the getter.

E.g.

private List<Item> itemList;
private transient DataModel<Item> itemModel;

public DataModel<Item> getItemModel() {
    if (itemModel == null) {
        itemModel = new ListDataModel<Item>(itemList);
    }

    return itemModel;
}

There are by the way alternate ways to retrieve the current row. See also How can I pass selected row to commandLink inside dataTable?