On 4/2/06, karthik Guru <
[EMAIL PROTECTED]> wrote:
The model isn't of type Blog. The object stored within
LoadableDetachableModel is of type Blog.
Blog blog = (Blog)blogModel.getObject( )
should hopefully work.?
On 4/2/06, Vincent Jenks <[EMAIL PROTECTED] > wrote:
> I'm just testing something out. Since I use EJB3 and need lazy
> initialization I'm making an attempt to see if passing an object with a
> collection of lazily-loaded elements in an IModel, from page-to-page, will
> prevent a LazyInitializationException (Hibernate).
>
> I start here in the first page:
>
> public class ViewBlog extends WebPage
> {
> public ViewBlog()
> {
> //get Blog in detached model
> IModel blogModel = new LoadableDetachableModel()
> {
> protected Object load()
> {
> return BlogProxy.getDefault(); //via proxy
> }
> };
>
> //add panel components
> add(new HeaderPanel("headerPanel", blogModel));
> ............
>
> ...and then in the HeaderPanel I do this:
>
> public class HeaderPanel extends Panel
> {
> public HeaderPanel(String id, IModel blogModel)
> {
> super(id);
>
> Blog blog = (Blog)blogModel; //EXCEPTION HERE!
> ..............
>
> I get this exception:
>
> java.lang.ClassCastException: com.myapp.ui.ViewBlog$1
> at com.myapp.ui.panel.HeaderPanel.<init>(HeaderPanel.java :34)
> at com.myapp.ui.ViewBlog.<init>(ViewBlog.java:53)
> at
> sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native
> Method)
> at
> sun.reflect.NativeConstructorAccessorImpl.newInstance (NativeConstructorAccessorImpl.java
> :39)
> at
> sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
> at
> java.lang.reflect.Constructor.newInstance (Constructor.java:494)
> at java.lang.Class.newInstance0 (Class.java:350)
> at java.lang.Class.newInstance(Class.java:303)
>
> How do I down-cast to Blog (entity bean) from the IModel param?
>
--
-- karthik --
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