final Customer customer = item.getModelObject();
... Link link = new Link("link") {
public void onClick() {
setResponsePage(new CustomerPage(customer));
the line above holds on to the customer object, so the Link subclass
has a reference to customer. instead
... Link link = new Link("link", item.getmodel()) {
public void onClick() {
setResponsePage(new
CustomerPage((Customer)getmodelobject()));
-igor
On Sun, Aug 8, 2010 at 8:16 PM, Chris Merrill <[email protected]> wrote:
> I have a DataView on a page to list items returned by a DB query (using JPA).
> My database object
> (Customer) has LoadableDetachableModel class (called DetachableCustomerModel)
> that the provider
> returns via the model() method. When populating the table, I want a link to
> a page for the details
> of that object. The following code actually works, but throws a
> WicketNotSerializableException
> on my Customer class when the page is rendered:
>
>
> final DataView<Customer> table_viewer = new
> DataView<Customer>("customer_list", provider)
> {
> �...@override
> protected void populateItem(final Item<Customer> item)
> {
> final Customer customer = item.getModelObject();
> item.add(new Label("id", String.valueOf(customer.getId())));
> Link link = new Link("link")
> {
> �...@override
> public void onClick()
> {
> Debug.log.out("CustomerListPage.onClick() - customer:
> " + customer.getName());
> setResponsePage(new CustomerPage(customer));
> }
> };
> item.add(link);
> link.add(new Label("name", customer.getName()));
> String date_string = "";
> Date date = customer.getLastActivity();
> if (date != null) // TODO should this
> really ever be null?
> date_string = DateUtil.toSimpleDateString(date);
> item.add(new Label("date", date_string));
> }
> };
>
> From what I understand, it SHOULD throw that exception, since the Customer
> came from JPA and
> shouldn't be serialized. That is, I think, why the LoadableDetachableModel
> exists. So, thinking
> that I should be using the model instead, I tried this variation, but was
> surprised to find
> the same result.
>
> final DataView<Customer> table_viewer = new
> DataView<Customer>("customer_list", provider)
> {
> �...@override
> protected void populateItem(final Item<Customer> item)
> {
> final IModel<Customer> customer_model = item.getModel();
> Customer customer = customer_model.getObject();
> item.add(new Label("id", String.valueOf(customer.getId())));
> Link link = new Link("link")
> {
> �...@override
> public void onClick()
> {
> Debug.log.out("CustomerListPage.onClick() - customer:
> " +
> customer_model.getObject().getName());
> setResponsePage(new
> CustomerPage(customer_model.getObject()));
> }
> };
> item.add(link);
> link.add(new Label("name", customer.getName()));
> String date_string = "";
> Date date = customer.getLastActivity();
> if (date != null) // TODO should this
> really ever be null?
> date_string = DateUtil.toSimpleDateString(date);
> item.add(new Label("date", date_string));
> }
> };
>
> So I'm obviously missing something important about the right way to do this.
>
> Can someone point me in the right direction?
>
> TIA!
> Chris
>
>
>
> --
> ------------------------------------------------------------------------ -
> Chris Merrill | Web Performance, Inc.
> [email protected] | http://webperformance.com
> 919-433-1762 | 919-845-7601
>
> Web Performance: Website Load Testing Software & Services
> ------------------------------------------------------------------------ -
>
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