If was trying to migrate one of the app from ruby to jrby to try out the threading benifits.
this wasn't an easy task :D
well the gem dependency did not create a big issue.
the problem came when connecting to mysql with jdbc driver
I had replaced
But it refused to load the driver saying :
"The driver encountered an unknown error: cannot load Java class com.mysql.jdbc.Driver'
I searched but Google could not answer me :(
then I started looking into activerecord-jdbsmysl-adapter gem and came upon the the file
I just copy pasted the code in a application.rb config with a condition if jruby used just after the bundler code
Jdbc::MySQL.load_driver(:require) if Jdbc::MySQL.respond_to?(:load_driver)
and boom it worked...!!!
I don't know why it did not load it even if it was included in Gemfile.
but at last I was able to run the app wit jruby and rails. Woaaahhhh..