@Continuable

[Rémi Forax]

Hi all, Hi Lukas,
I've sucessfully used continuation with non blocking IO, this is really 
cool.
see 
http://weblogs.java.net/blog/forax/archive/2009/11/22/nio-server-continuation-java

But @Continuable seems odd for me.

Why method need to be marked @Continuable ?
What is the reason ?
Is there a problem in the implementation that in order to be solved need
to split method in two kinds, continuable or not ?

Is it a security reason ?

Because @Continuable is required, there is not way to use any
external jars or even classes that already exist in the JDK
like by example trying to yield in a SAX handler of an XML parser.

This limitation seriously limit the usefulness of the current
continuation implementation.

Rémi