RingoJSFinJUG talk byOleg Podsechin15.01.2013

Overview started by Hannes Wallnöfer

successor to Helma, HelmaNG

o been in development for 13+ years

runs on the JVM

uses Mozilla Rhino

conforms to CommonJS

CommonJS

Modules/1.0, Modules/1.1

JSGI

Binary

Filesystem

System

Unit Testing

Features

hot reloading of modules

profiler

debugger

sandboxing

runs anywhere Java runs

within a webapp container

standalone process

Install & Run

git clone git://github.com/ringo/ringojs.gitant update jarbin/ringo

Hello World

>> 'Hello World'Hello World

Hello World, Take Two

new require('ringo/httpserver').Server({  app: function() {    return {status: 200,             headers: {},             body: ['Hello World']};  }}).start();

Multithreaded JS// run "test" in "threads" parallel threads a total of "count" timesfunction parallel(test, count, threads) {  var pool = new 

java.util.concurrent.Executors.newFixedThreadPool(threads);  function runnable(f) {    return new java.lang.Runnable({ run: function() {      try { f(); } catch(e) { }    }});  }  for(var i = 0; i < count; i ++)    pool.execute(runnable(test));}

RingoJS libraries search GitHub for ringo-

ringo-admin install user/repo

use rp and packages.ringojs.orgrp install name

Examples of RingoJS libraries

stick

ringo-modulr

ringo-storable

ringo-filestore, ringo-hibernate

ringo-mongodb

ringo-mail

Stick Examplevar {Application} = require("stick");

var app = Application();

app.configure("error", "notfound", "route");var response = require('ringo/jsgi/response');

app.get("/", function(req) { return response.html("Hello");});

Community

#ringojs on Freenode IRC

#ringojs & @ringojs on Twitter

http://github.com/ringo

Use Cases & Benefits

standalone

to extend an existing Java webapp

plugin architecture for existing application

code reuse between server and browser

less context switching

more compact code, faster prototyping

Extras

Common Node

Nashorn

Node.jar

Vert.x

@olegpodsechingithub.com/olegp