Project Nashorn, why should we care #js.next()

Excellence inSoftware Engineering

Project Nashorn – why should we care

@michalgruca

Excellence in Software Engineering

Excellence in Software Engineering @michalgruca 3

What is Nashorn


Whats the fuss all about

● Yet another js runtime -> on server

● Quite fast

● Built on top of Java

● EcmaScript 5.1 compatible


But Node

● Mature

● Tested

● Has ecosystem (modules)

● Fast!

V8 powered


It's different architecture than Node!


Threads!


But WHY to use it?!


Access to JVM!

JVM


Really

Java

http://lustich.de/bilder/tiere/really-dog/


Avatar.js

Avatar.js is a project to Avatar.js is a project to bring the nodebring the node programming model, APIs and module ecosystem programming model, APIs and module ecosystem to the Java platformto the Java platform, enabling a new class of , enabling a new class of hybrid server applications that can leverage two of hybrid server applications that can leverage two of the most popular programming languages and the most popular programming languages and ecosystems today. ecosystems today.

These These Java+JavaScriptJava+JavaScript applications can applications can leverageleverage capabilities of capabilities of both environmentsboth environments - - access the latest access the latest node frameworksnode frameworks while taking while taking advantage of the advantage of the Java platform's scalability, Java platform's scalability, manageability, toolsmanageability, tools, and extensive collection of , and extensive collection of Java Java librarieslibraries and middleware. and middleware.

https://avatar-js.java.net/


Avatar.js

https://avatar-js.java.net/


Compatible with existing Java applications


Allows to create Java in Js

DEMOhttps://github.com/mgruca/nashorn_example/blob/master/src/main/test/pl/rits/Runner.java#L19https://github.com/mgruca/nashorn_example/blob/master/src/main/test/pl/rits/Runner.java#L25

https://github.com/mgruca/nashorn_example/blob/master/src/main/test/pl/rits/Runner.java#L19



EnterpriseEnterprisereadyready

By Takashi Hososhima

https://www.flickr.com/photos/htakashi/8393574815/


Enterprise?


Big stuff


Libs


Security & Crypto

X.509X.509

PKIPKI

S/MIMES/MIME

Open/PGPOpen/PGP

PKCS#10 PKCS#10 PKCS#12PKCS#12

Hashing algorithmsHashing algorithms


XML!

● SAX● Dom● STaX● ...● ...● Bindings● You name it!


Office support


Desktop

By Moriline: http://en.wikipedia.org/wiki/NetBeans#mediaviewer/File:Gui-builder.png


Allows OS scripting!

DEMOhttps://github.com/mgruca/nashorn_example/blob/master/scripts/fx.shhttps://github.com/mgruca/nashorn_example/blob/master/scripts/sample.sh

https://github.com/mgruca/nashorn_example/blob/master/scripts/fx.sh

https://github.com/mgruca/nashorn_example/blob/master/scripts/sample.sh


IO

● Channels

● Streams

● Buffers

● Readers / Writers

● Blocking / Non blocking


Testing and verification

DEMOhttps://github.com/mgruca/nashorn_example/blob/master/src/main/test/pl/rits/Runner.java#L48



Access to all platforms and H/W


Polyglot enabled


cons

By Hans Hillewaert

http://en.wikipedia.org/wiki/Indian_rhinoceros#mediaviewer/File:Rhinoceros_unicornis_(posterior).jpg


Slower than Node

May be twice+ slower than V8http://ariya.ofilabs.com/2014/03/nashorn-the-new-rhino-on-the-block.html

Excellence in Software Engineering

Mean tim

e in Java land

Mean tim

e in Java land

www.techempower.com/benchmarks


Java experts necessary

2


Can be tricky

By Yoel Ben-Avraham

Demo: https://github.com/mgruca/nashorn_example/blob/master/src/main/test/pl/rits/Runner.java#L42

https://www.flickr.com/photos/25275534@N00/8718123610/



Real world examples

What can we do with it?What can we do with it?


My project


Questions

By Xurblehttps://www.flickr.com/photos/xurble/376588066/


I love feedback! :)

@michalgruca

[email protected]

www.rits.pl

mailto:[email protected]