gem_bundler

= Gem bundler A simple lib for bundling gems into jars. This obviously is intended for use with JRuby. Install the gem and create a rake task and a configuration file in your project:

your/config/gems.rb: GemBundler.instance.configure do |g| g.gem "foo_gem" g.gem "path/to/a/gemfile/some_gem-0.3.2.gem" #version requirement will not work here g.gem "activerecord", ">= 2.3"

g.setup "tmp/gems", "foo/lib"

end

Rake task: require 'gem_bundler' require 'path/to/your/config/gems.rb'

desc "Bundle gems into a JAR file" task :bundle_gems do GemBundler.instance.bundle end

This will install the configured gems into "tmp/gems" (this dir will be deleted, so be cautious), move any JAR files inside the gems to "foo/lib" and package the gems into "foo/lib/gems.jar".

In your JRuby application you should put "foo/lib" onto your $LOAD_PATH (because the moved jars from the gems will probably be required) and require gems.jar.

See http://blog.nicksieger.com/articles/2009/01/10/jruby-1-1-6-gems-in-a-jar for details.

I use this mechanism to bundle gems to go with applications packaged using rawr[http://rawr.rubyforge.org/].