Scripting Context - Does not work as invocable?

Question

Hi
I am using the Java Scripting implementation, in my case Rhino, and actually I am very happy with it. Nearly everything runs as expected. But there is one thing regarding Context per Script, actually bindings because of variables per script.
I had a look at http://java.sun.com/javase/6/docs/technotes/guides/scripting/programmer_guide/index.html#scopes and if I do it like that everything works fine. Now, I have a script with several functions and I want to invoke specific functions. Again I take that example and extend it to something like:
engine.eval("function printSomething() {println(x);}", newContext);
In my "small world^^'" this should do the same, but I have to invoke printSomething:
Invocable inv = (Invocable)engine;
inv.invokeFunction("printSomething");
If I do so, I get a
java.lang.NoSuchMethodException: no such method: printSomething
What am I getting wrong? I want to do the same as in the example, provide another Script with another Context (specifically Bindings), but as soon as I invoke the function, it says the function is not available even if it is very much visible.
If I remove the
newContext
from
eval()
it works, but does not have the other Binding.
How can I make that happen?
I hope this is the right forum and someone can "light me up" where I just see darkness right now.
Many thanks in advance

Answer 1

Your script needs something from the default context.
When you create a new context it will not work anymore.
Just get hold of the original context (or a copy of it) and add your bindings
and pass that.
Something like [http://forums.sun.com/thread.jspa?messageID=10978511#10978511]