Instantiating Rhinoscript Native Objects from Java/Scala

Question

I\'m trying to improve the performance of a javascript snippet evaluator. These script snippets can reference any number of variables that exist in a strin

Answer 1

So after much fiddling I've come up with an adequate solution although it did not yield the performance increase I had hoped for (only 10% faster).

The solution is specific to Scala / Lift / Json and is contained in the ScriptingUtil.scala file.

To summarise:

1. Context.javaToJs() does not seem to work in all cases. (java.lang.RuntimeException: No Context associated with current Thread)
2. A 'scope' object of type Scriptable is needed. The solution I came up with isn't pretty but it works.

3. To create a NativeArray:

   val na = new NativeArray(arr)
   na.setPrototype(ScriptableObject.getClassPrototype(scope, "Array"))