Mysqlconnectivity

Hi,

I am working in JRuby application with Tomcat server while using

jdbcmysql as adapter ,Please install the jdbcmysql adapter: gem install activerecord-jdbcmysql-adapter (no such file to load –
active_record/connection_adapters/jdbcmysql_adapter)
this is the errror displaying in the log file.

      can any one give idea how to solve this?