[BUILDR-567] Enable Ant using JRuby's Ant integration

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Later
• Affects Version/s: 1.4.4
• Fix Version/s: 1.5
• Component/s: JRuby
• Assignee: Antoine Toulme
• Reporter: David
• Created: 30/Jan/11 06:46
• Updated: 14/Aug/16 05:48
• Resolved: 14/Aug/16 05:48

Description

Buildr does not work with JRuby's Ant integration. Since Antwrap hasn't been updated in almost three years, I tried to follow the JRuby + Ant examples in the article linked at the end. This simple script works using just jruby:

1. test.rb
   require 'ant' # Use JRuby Ant integration

puts ant.properties['ant.version']
puts ant.properties['ant.core.lib']

But when I try accessing ant from Buildr, I keep getting a TypeError that complains about Ant not being a class. This buildfile:

1. buildfile - buildr sandbox
   VERSION_NUMBER = "1.0.0"
   GROUP = "buildr-sandbox"

require 'ant'

repositories.remote << "http://www.ibiblio.org/maven2/"

desc "The Buildr-sandbox project"

define "buildr-sandbox" do
project.version = VERSION_NUMBER
project.group = GROUP

package :jar
end

Results in this error:

Buildr aborted!
TypeError : Ant is not a class
.../jruby/lib/ruby/site_ruby/shared/ant.rb:3:in `(root)'
org/jruby/RubyKernel.java:1041:in `require'
.../jruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:29:in `require'
.../jruby/lib/ruby/site_ruby/shared/ant.rb:6:in `(root)'
org/jruby/RubyKernel.java:1066:in `load'
.../buildr-sandbox/buildfile:412:in `raw_load_buildfile'
.../jruby-1.6.0.RC1/lib/ruby/gems/1.8/gems/buildr-1.4.4-java/lib/buildr/core/application.rb:218:in `load_buildfile'
.../jruby-1.6.0.RC1/lib/ruby/gems/1.8/gems/buildr-1.4.4-java/lib/buildr/core/application.rb:523:in `standard_exception_handling'
.../jruby-1.6.0.RC1/lib/ruby/gems/1.8/gems/buildr-1.4.4-java/lib/buildr/core/application.rb:213:in `load_buildfile'
.../jruby-1.6.0.RC1/lib/ruby/gems/1.8/gems/buildr-1.4.4-java/lib/buildr/core/application.rb:137:in `run'
.../jruby-1.6.0.RC1/lib/ruby/gems/1.8/gems/buildr-1.4.4-java/lib/buildr/core/application.rb:523:in `standard_exception_handling'
.../jruby-1.6.0.RC1/lib/ruby/gems/1.8/gems/buildr-1.4.4-java/lib/buildr/core/application.rb:135:in `run'
.../jruby-1.6.0.RC1/lib/ruby/gems/1.8/gems/buildr-1.4.4-java/bin/buildr:19:in `(root)'
org/jruby/RubyKernel.java:1066:in `load'

I think it's because $JRUBY_HOME/lib/ruby/site_ruby/shared/ant.rb defnes Ant as a class while lib/buildr/java/ant.rb, which runs first (I think) defines it as a module.

The article: http://www.engineyard.com/blog/2010/rake-and-ant-together-a-pick-it-n-stick-it-approach/