jruby/activerecord-jdbc-adapter — pull request #206 by cturner (2012-07-17 19:32:37+00:00)
Title: Updated MySQL JDBC adapter to support Rails 3.2 explain feature

I lifted this code from the mysql2 gem and modified it to work
in the JDBC gem. I've done testing under JRuby 1.6.7.2 with
MySQL 5.1 and 5.5 with no issues.

Github issue URL:
https://github.com/jruby/activerecord-jdbc-adapter/issues/159