Just pass in null. The component parameter is only used by
CompoundPropertyModel and friends, not by LoadableDetachableModel.
Eelco
On 4/2/06, Vincent Jenks <[EMAIL PROTECTED]> wrote:
> That won't work, since getObject takes a parameter of Component....what
> would I pass in?
>
>
> 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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>
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