throw new MailetException("target_column not specified for JDBCAlias");
}
try {
ServiceManager componentManager = (ServiceManager)getMailetContext().getAttribute(Constants.AVALON_COMPONENT_MANAGER);
// Get the DataSourceSelector service
DataSourceSelector datasources = (DataSourceSelector)componentManager.lookup(DataSourceSelector.ROLE);
// Get the data-source required.
datasource = (DataSourceComponent)datasources.select(datasourceName);
conn = datasource.getConnection();
// Check if the required table exists. If not, complain.
DatabaseMetaData dbMetaData = conn.getMetaData();