if (source == null) throw new SQLException ("Tried to get Connection from non-relational embedded data source.");
if (source == null) { if (sourceName == null) throw new SQLException ("Tried to get Connection from non-relational embedded data source."); else throw new SQLException ("Datasource is not defined: "+sourceName+"."); }
    public Connection getConnection () throws ClassNotFoundException, SQLException {	if (source == null && parentMapping != null)	    return parentMapping.getConnection ();	if (source == null)	    throw new SQLException ("Tried to get Connection from non-relational embedded data source.");	return source.getConnection ();    }