1. JRuby on Rails Brian Leonard ブライアン レオナルド bleonard@sun.com

2. 2 Agenda ● What is Ruby ● What is Rails ● What is JRuby ● What is JRuby on Rails ● What is NetBeans Ruby IDE

3. 3 What is Ruby?

4. 4 ● Object-oriented ● Dynamically typed ● Extensible via Ruby Gems – Very active community – Wide range of applications ● Created by Yukihiro “Matz” Matsumoto ● Released in 1995 ● Jumped in popularity in 1996

5. 5 Some Cool Things...

6. 6 EVERYTING is an object

7. 7 Methods can be added on the fly

8. 8 Even missing methods can be handled.

9. 9 class Blog attr_accessor :title def initialize( title ) @title = title end def Blog.method_added( name ) puts "#{name} method added" end def method_missing( method ) puts "There is no #{method} method, but I could create one if you like." end

10. 10 Ruby Language Demo

11. 11 What is ?

12. 12

13. 13 ● Metaprogramming ● Active Record ● Convention over configuration ● Scaffolding ● Easy Ajax ● Rapid feedback loop

14. 14 What is ?

15. 15 Open source Java implementation of the Ruby language

16. 16 What is ? on

17. 17 Simply a Rails application running on JRuby

18. 18 What is NetBeans Ruby IDE?

19. 19 An Integrated Development Environment for Ruby

20. 20 EVERYTHING you need in the Edit, Test, Debug Cycle

21. 21 Powerful Code Editor ● Syntax highlighting ● Code-completion ● In-place API documentation ● Mark occurrences ● Go to declaration ● Instant Rename

22. 22 Live Code Templates bt belongs_to :object Most TextMate snippets included

23. 23 Source Level Debugging! ● Stepping ● Breakpoints ● Local Variables ● Call Stack ● Threads ● Watches ● Balloon-Evaluation Get it?

24. 24 Unit Testing ● Test:Unit ● RSpec ● AutoTest

25. 25 Ruby Gem Manager ● View Installed Gems ● Update existing Gems ● Add new Gems

26. 26 IRB irb(main):001:0> Welcome to the JRuby IRB Console 'Ruby'.length => 4 irb(main):002:0>

27. 27 Version Control ● Subversion ● CVS ● Local History

28. 28 Integrated Database Tooling ● View Data ● Execute SQL Command ● Design Queries

29. 29 Plus, support for Rails

30. 30 Project and Code Generators ● Generate Models, Controllers... ● Skip or Overwrite existing files ● Preview Only Option ● Usage provided in dialog

31. 31 Database Migrations

32. 32 RHTML Editing Syntax highlighting Code completion Goto Action/View

33. 33 Server Integration ● WEBrick / Mongrel automatically started ● Server console window

34. 34 RHTML Debugging ● Set Breakpoints in your RHTML ● View local variables ● Set watches ● Call stack ● Balloon Evaluations

35. 35 Demo - Agile Development of the Plugin Portal

36. 36 Conclusion You can take advantage of the agility of Ruby and Rails while continuing to leverage your investment in Java