Pentaho Reporting

what are the steps to configure jndi datasource connection for mysql in pentaho report designer 5.0.2 and also in pentaho user console 5.0.2 ?
i done in both , when i test the connection it is ok, but when running query it throws

Caused by: java.sql.SQLException: Failed to access the JNDI system: Cannot find the requested datasource 'dwh_xcellapaydatamart' anywhere in the JNDI system.
anybody know how to solve this !