JRuby on Rails, Flying Saucer

Who's this then? Alexander Malfait Enjoying Rails since 2007 Tallest employee at CAT Solutions

Wait, didn't we hate Java? JVM is fast JVM is everywhere, corporate approved Tons of useful & widely used libraries Runs great on Windows

Running Rails jruby -S gem install glassfish jruby -S glassfish -e production config.threadsafe! Works on other app servers (.war file)

Hiding behind Apache <VirtualHost *:80> ServerName my.awesome.app.be RewriteEngine On ProxyPass / http://localhost:3000/ retry=0 ProxyPassReverse / http://localhost:3000/ ErrorDocument 503 "<b>Come back in 10 seconds</b>" </VirtualHost> http://blog.headius.com/2009/04/apache-jruby-rails-glassfish-easy.html

Talking to Java Just create java objects like Ruby objects Extend Java classes in Ruby Require jars from Ruby without mucking about with the JVM ClassPath

Ruby Style Java java.lang.System.current_time_millis x.setSomething(var) => x.something = var button = javax.swing.JButton.new "Press me!" button.add_action_listener do |event| event.source.text = "You did it!" end

Flying Saucer Renders XHTML/CSS3 to PDF (very well!) Written in Java Handles any reporting problem you can throw at it

acts_as_flying_saucer Rails apps produce HTML You know HTML Report to PDF using HTML

Cocktail Reporting class DrinksController < ApplicationController acts_as_flying_saucer def mojito @ingredients = [ "4.0 cl White Rum", "3.0 cl Fresh lime juice", "3 sprigs of Mint", "2 teaspoons Sugar", "Soda Water" ] render_pdf :send_file => { :filename => "tasty.pdf" } end end

Cocktail Reporting <h1 style="color: green;">Mojito!</h1> <ul> <% @ingredients.each do |ingredient| %> <li><%=h ingredient %></li> <% end %> </ul> render_pdf

I want my mojito NOW! Rendering drinks/mojito Completed in 16ms ~62 mojitos/second

Larger documents Rendering the holy bible 4.5MB of HTML Resulting PDF: 1134 pages Completed in 22500ms

Real Example

Typical Reporting Problems Repeating headers / footers Paginating/nesting tables Lots of data Maintaining uniform reporting style All covered by the flying saucer!

Script anything! JFreeChart: powerful charting Apache POI: read & write Excel files JODConvertor: convert (almost) anything to anything using OpenOffice.org Swing Hundreds more...

References http://github.com/alexandermalfait/acts_as_flying_saucer http://bosmeeuw.wordpress.com/ http://www.catsolutions.be/

http://www.catsolutions.be	45
http://www.slideshare.net	5
http://catsolutions.be	3
http://new-site.catsolutions.be	1
http://webcache.googleusercontent.com	1

JRuby on Rails, Flying Saucer

by alexandermalfait on Oct 19, 2009

Accessibility

Categories

Tags

Upload Details

Usage Rights

5 Embeds 55

Statistics

JRuby on Rails, Flying Saucer — Presentation Transcript