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jbundler

Manage jar dependencies similar to how bundler manages gem dependencies:

differences compared to bundler

Get started

Install JBundler with:

jruby -S gem install jbundler

First, create a Jarfile, something like:

jar 'org.yaml:snakeyaml', '1.14'
jar 'org.slf4j:slf4j-simple', '>1.1'

Install jar dependencies

jruby -S jbundle install

Loading the jar files

require 'jbundler'

It will add all the jar dependencies in the java classpath from the Jarfile.lock.

Jarfile

More info about the Jarfile and about versions.

For adding a maven repository see Jarfile.

Building the jbundler gem

Running the integration test

./mvnw verify
./mvnw clean verify

or a single integration test

./mvnw verify -Dinvoker.test=running_rspec_via_rake
./mvnw clean verify -Dinvoker.test=running_rspec_via_rake

Building the gem (see ./pkg)

./mvnw package -Dinvoker.skip

Or just

gem build jbundler.gemspec

Usage

Here is an example usage of the AliasEvent class from the snakeyaml package

#test_file.rb
require 'jbundler'
require 'java'

java_import 'org.yaml.snakeyaml.events.AliasEvent'

class TestClass
  def my_method
    puts AliasEvent.methods
  end
end

TestClass.new.my_method

Limitations

Since the version resolution happens in two steps - first the gems, and then the jars/poms - it is possible in case of a failure that there is a valid gems/jars version resolution which satisfies all version contraints. So there is plenty of space for improvements (like maven could resolve the gems as well, etc).

Special thanks

The whole project actually started with a controversial discussion on a pull request on bundler. This very same pull request were the starting point of that project here. Probably by now there is not much left of the original code, but many thanks to ANithian for giving the seed of that project.

License

Almost all code is under the MIT license but the java class (AetherSettings.java)[https://github.com/mkristian/jbundler/blob/master/src/main/java/jbundler/AetherSettings.java] which was derived from EPL licensed code.

Contributing

  1. Fork it
  2. Create your feature branch (git checkout -b my-new-feature)
  3. Commit your changes (git commit -am 'Added some feature')
  4. Push to the branch (git push origin my-new-feature)
  5. Create new Pull Request

Meta-fu

enjoy :)