Downloading JDBC adapter with RVM for Rails on Tomcat

I am going through this tutorial for getting JRuby to get deployed on Tomcat: http://thenice.tumblr.com/post/133345213/deploying-a-rails-application-in-tomcat-with-开发者_如何学Gojruby-a

and it recommends doing

$ jruby -S gem install activerecord-jdbcmysql-adapter

But since I have been trying to manage all my gems with RVM, what would be the equivalent way to do this using RVM?

Actually it is pretty simple. Here is the command I used:

rvm install ActiveRecord-JDBC