convert_database_option_for_jruby

# File railties/lib/rails/generators/database.rb, line 29
      def convert_database_option_for_jruby
        if defined?(JRUBY_VERSION)
          opt = options.dup
          case opt[:database]
          when "postgresql" then opt[:database] = "jdbcpostgresql"
          when "mysql"      then opt[:database] = "jdbcmysql"
          when "sqlite3"    then opt[:database] = "jdbcsqlite3"
          end
          self.options = opt.freeze
        end
      end