Yes, I think the generics logic isn't smart enough for this case, that
is, to identify and convert the parameter of the event handler method.
You can add this as a bug, but I'm not even sure how to start making
this work correctly!
On Thu, Mar 20, 2008 at 9:04 PM, Angelo Chen <[EMAIL PROTECTED]> wrote:
>
> Hi,
>
> I'm trying out generic in 5.0.11, I have a base class ObjectEdit, then
>
> public class ObjectEdit<T> {
>
> private T object;
> public T getObject() { return object;}
> public void setObject(T object) { this.object = object;}
> public void onActivate(T obj) { object = obj;}
> public T onPassivate() { return object; }
> }
>
> I was hoping that I can just extend it like this:
>
> public class UserEdit extends ObjectEdit <Usr> {
> }
>
> but it does not work, error:
> org.apache.tapestry.ioc.internal.util.TapestryException
> Failure reading parameter 'object' of component admin/UserEdit:object:
> java.lang.String
>
> I have to do:
>
> public class UserEdit extends ObjectEdit <User> {
> public void onActivate(User obj) {
> this.setObject(obj);
> }
> }
>
> and remove the onActivate from ObjectEdit, why onActivate does not work in a
> base class when onPassivate can? Thanks,
>
> A.C.
>
>
> --
> View this message in context:
> http://www.nabble.com/T5%3A-generic%2C-onActivate-and-onPassivate-tp16193600p16193600.html
> Sent from the Tapestry - User mailing list archive at Nabble.com.
>
>
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--
Howard M. Lewis Ship
Creator Apache Tapestry and Apache HiveMind
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