nashorn

I'm trying to migrate/update my project to use Nashorn from Rhino. I have some global utility functions implemented in Java and added into global scope of the target script engine, typical example is log(message) . In Rhino it is implemented via public static class LogFunction extends org.mozilla.javascript.BaseFunction { @Override public Object call(Context cx, Scriptable scope, Scriptable thisObj, Object[] args) { ... } } whose instance added into target scope. What has to be done in case of Nashorn? I can't find how standalone function can be implemented for Nashorn. You can easily

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Cant get Nashorn engine ScriptEngine engine = new ScriptEngineManager().getEngineByName("nashorn"); engine.eval("print('Hello World!');"); engine returns null I am using eclipse, jdk1.8.0_11 java -version java version "1.8.0_20-ea" Java(TM) SE Runtime Environment (build 1.8.0_20-ea-b23) Its working when I pass null param into ScriptEngineManager constructor: ScriptEngine engine = new ScriptEngineManager(null).getEngineByName("nashorn"); engine.eval("print('Hello World!');"); from java docs ScriptEngineManager(ClassLoader loader) If loader is null, the script engine factories that are bundled

I am trying to write a library that will let me execute JSON Logic rules via the Nashorn Javascript engine. My problem right now is specifically around the JSObject wrapper I've created to handle moving data from Java/Kotlin into the scripting engine. If an array is passed in such as [true] it is wrapped and the json-logic script will receive it, see that it is an array, and attempt to run the following bit of code: if(Array.isArray(logic)) { return logic.map(function(l) { return jsonLogic.apply(l, data); }); } When the .map function is called, Nashorn will call getMember("map") on my object

I want to render d3 charts on the server. I had 3 options: Node, Phantom, and Nashorn. I prefer Nashorn because my API is Scala Play and I don't want to manage another process. (deployment, load, queue, etc etc) So now I need to get JSDom working in Nashorn, so that D3 will have something to render to. This works so far but I can't figure out how to add jsdom class Application @Inject() (val messagesApi: MessagesApi) extends api.ApiController { def test = ApiAction { implicit request => ok("The API is ready") } def pptx = Action { implicit request => val manager: ScriptEngineManager = new

In Java 1.7, prior to it's removal, one could use 'Packages' to access Java Enums in the following way from Javascript on an HTML page viewed a browser: var enumvar1 = document.appletid.Packages.com.mycompany.MyClass$MyEnumYesNo.YES var enumvar2 = document.appletid.Packages.com.mycompany.MyClass$MyEnumYesNo.NO I'm upgrading these HTML pages to use Java 1.8 (which now uses the Nashorn javascript engine), and I cannot seem to figure out how to access the Enum members. I've rewritten the Java applet to return a new MyClass object to a javascript variable, and I can access all the methods and