Ruby on Java

Luc Casterahttp://dambalah.com

luc.castera@gmail.com

JRuby JSR-223: Scripting for Java Bean Scripting Framework

Java @ work Ruby @ home

Java + Ruby

Motivation

Solutions

Option 1 Option 2 Option 3

JRubyJRuby is an 100% pure-Java implementation of Ruby

Import Mature Java Libraries into Ruby

Facilitate Ruby Deployment in Enterprise

Threads + Internalization friendly

JRuby 1.0 'almost' Ruby 1.8.x compatible

JRuby on Rails:active-record-jdbc, goldspike, glassfish-rails)

JRuby compiler to Java bytecode -> Performance!

JRuby Example

JSR-223The JSR-223 defines scripting in the Java platform. Sun's implementation of Java SE 6 includes Rhino engine for Javascript.

Other Script Engines exists for other languages such as Ruby, Python, Tcl, PHP...

You may include scripting support in your Java application for various reasons:- Sophisticated configuration options- User-defined functionality- Ease of maintenance- Skill set of users- Reuse of code modules in other languages

JSR-223

Example 1

Example 2

JillBob

JillBobDana

BSFSimilar to JSR-223

Created by IBM, then donated to Apache S.F.

http://jakarta.apache.org/bsf/

Resourceshttp://jruby.codehaus.org/

http://dist.codehaus.org/jruby/talks/

http://developers.sun.com/events/techdays/presentations/2007/TD_GEN_JavaSE_Scripting.pdf

http://headius.blogspot.com/

https://scripting.dev.java.net/

http://java.sun.com/developer/technicalArticles/J2SE/Desktop/scripting/

http://www.jrubyinside.com/

http://jcp.org/en/jsr/detail?id=223