How to convert Rhino-JavaScript arrays to Java-Arrays
NativeArray arr = (NativeArray) result; Object [] array = new Object[(int) arr.getLength()]; for (Object o : arr.getIds()) { int index = (Integer) o; array[index] = arr.get(index, null); }
jsr223
Where can I find a list of available JSR-223 scripting languages? [closed]
This is not a official list, but you can start here: http://en.wikipedia.org/wiki/List_of_JVM_languages Rhino (JavaScript) is implemented in the Oracle JDK/JRE by default. With this code you can see what scripting languages are available in your JDK: import java.util.*; import javax.script.*; public class A { public static void main( String[] args ) { ScriptEngineManager mgr = … Read more
Should I use a separate ScriptEngine and CompiledScript instances per each thread?
You can share a ScriptEngine and CompiledScript objects across threads. They are threadsafe. Actually, you should share them, as a single engine instance is a holder for a class cache and for JavaScript objects’ hidden classes, so by having only one you cut down on repeated compilation. What you can’t share is Bindings objects. The … Read more