Hacking

For local development, install with (requires bundler):

jruby -S bundle install

To run the tests (will download Cascading and Hadoop jars):

jruby -S bundle exec rake test

To run the specs:

jruby -S bundle exec rake spec

To run the samples:

jruby -S bundle exec rake samples

To create the gem:

jruby -S gem build cascading.jruby.gemspec

To install it locally:

jruby -S gem install cascading.jruby-xxx.gem

The file cascading/cascading.rb defines global helper methods for cascading like tap creation, fields creation, etc.

The Cascading::Operations module is deprecated. The original idea from long ago is that it would be useful to mixin operator wrappers to places other than Cascading::Assembly, but this is not true. Instead, put Eaches in Cascading::Assembly, Everies in Cascading::Aggregations, and any more generally useful utility code directly in the Cascading module (cascading/cascading.rb).