#// Usage: jjs -scripting foreignobject.js

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// cross nashorn engine scripting

// access script objects from other engines in natural syntax

var ScriptEngineManager = Java.type("javax.script.ScriptEngineManager");

// create manager

var manager = new ScriptEngineManager();

// create engine

var engine = manager.getEngineByName("js");

// eval code!

engine.eval(<<CODE

    var obj = {

        foo: 42,

        func: function() {

            print("func: " + this.foo);

        }

    };

CODE);

// Nashorn engine returns script objects as instance of

// the class jdk.nashorn.api.scripting.ScriptObjectMirror

// But nashorn's dynalink linker can treat these objects

// specially to support natural script syntax to access..

// In Java code, you need to use ScriptObjectMirror's 

// methods though. Once again, script world is simpler :-)

var foreignObj = engine.get("obj");

// access properties, functions of it

// with natural syntax

print(foreignObj.foo);

foreignObj.func();

print(typeof foreignObj.func);

// access engine's global

var foreignGlobal = engine.eval("this");

// create objects in engine's world from here!

print(new foreignGlobal.Object());

print(new foreignGlobal.Date());