public Object getSQLJContext(WSRdbManagedConnectionImpl mc, Class<?> DefaultContext, WSConnectionManager connMgr) throws SQLException {
        return null;
    }
public Object getSQLJContext ( WSRdbManagedConnectionImpl mc , Class < ? > DefaultContext , WSConnectionManager connMgr ) throws SQLException { return null ; }
This method returns a sqljConnectContext. It will go to DB2 to get the connection Context.
We need to create a new WSJccConnection to get the phsyical sqlj context.So the sqlj runtime
will use our WSJccConnection to do the work.

@param a managedConnection
@param DefaultContext the sqlj.runtime.ref.DefaultContext class
@return a physical sqlj connectionContext for DB2 only or return null for other database
@exception a SQLException if can't get a DefaultContext