Hi great!
I think we already have it through cdi and decorators but it doesnt hurt to
get it this way ;). Fun feature allowing partial impl btw!
Le 21 sept. 2013 12:49, "David Blevins" <[email protected]> a écrit :
> Implemented an experimental feature in the spirit of the @Proxy concept
> where an interface can be given along with an InvocationHandler
> implementation.
>
> When the bean is created we'd create the InvocationHandler, create a proxy
> using the interface, then use the proxy as the bean instance.
>
> Took this idea a bit further to allow for abstract classes to get the same
> perk and more. If the bean class is abstract and implements
> java.lang.reflect.InvocationHandler, then the abstract methods will
> delegate to the bean's java.lang.reflect.InvocationHandler.invoke(..)
> method.
>
> This allows for sort of a hybrid approach where some methods can be
> abstract and handled in a reflection-like manner, while others can be
> implemented regularly.
>
> An interesting difference is the code takes extreme care to implement all
> the constructors of the parent class as well as the annotations of the
> parent class and any method annotations and method param annotations of
> abstract methods.
>
> This should allow the dynamically created class to replace the parent
> class in every way, including usage in annotation heavy APIs like JAX-RS,
> JAX-WS or CDI. I tested JAX-RS and it seems to work perfectly.
>
> For example see this RESTful service:
>
> @Stateless
> @Path("/ejb")
> public abstract class RESTIsVeryCool implements InvocationHandler {
>
> @EJB
> private SimpleEJB simpleEJB;
>
> @javax.ws.rs.core.Context
> Request request;
>
> @Path("/normal")
> @GET
> public abstract String normal();
>
> @Path("/rest")
> @GET
> public abstract String rest();
>
> @Path("/param")
> @GET
> public String param(@QueryParam("arg") @DefaultValue("true")
> String p) {
> return p;
> }
>
> @Path("/field")
> @GET
> public boolean field() {
> return "GET".equals(request.getMethod());
> }
>
> @Override
> public Object invoke(Object proxy, Method method, Object[] args)
> throws Throwable {
> return simpleEJB.ok();
> }
> }
>
>
> This is of course an experiment. All sorts of feedback welcome! We can
> go anywhere or nowhere with this :)
>
>
> -David
>
>
