if ( source == null ) return null;  if(source instanceof Date ) { return toString( (Date) source ); } else { return source.toString(); }
return toString( source, Locale.getDefault( ) );
	public static String toString( Object source ) throws BirtException	{		if ( source == null )			return null;				if(source instanceof Date )		{			return toString( (Date) source );		}		else		{			return source.toString();		}	}