invoking a interface default method from within an InvocationHandler

[Jochen Theodorou]

Hi,

I find this a little odd and I wonder how you are supposed to do it 
right. Or if that is a bug.

So I have a class implementing InvocationHandler and I used Proxy to 
create a an proxied instance of Consumer. This is a functional interface 
and I want to use its accept method for my purposes, while still keeping 
the old andThen method as it is.

going by the usual signature for the InvocationHandler implementation 
main method (public Object invoke(Object proxy, Method method, Object[] 
args) throws Throwable)

I can do neither method.invoke on this, since that leads to that method 
(overflow then) again, nor can I take the proxy object, since it 
obviously has nothing to do with functional interface.

Now... is that really on purpose? Are you indeed forced to split up your 
code into a java7+ and pre java7 case to be able to use 
MethodHandleProxies#asInterfaceInstance where it is available instead? 
Shouldn't Proxy and InvocationHandler then be marked deprecated in 
Java8? And how do you use MethodHandleProxies to implement multiple 
interfaces?

bye Jochen

-- 
Jochen "blackdrag" Theodorou - Groovy Project Tech Lead
blog: http://blackdragsview.blogspot.com/
german groovy discussion newsgroup: de.comp.lang.misc
For Groovy programming sources visit http://groovy-lang.org