public List<TableCart> readAll(Connection conn, TableCart bean){        
        String sql = "select * from cart ;";
        
        PreparedStatement pstm = preparedStatementWrapper(conn, sql);
        ResultSet rset = queryWrapper(pstm);
        
        List<TableCart> result = rsetMapperWrapper(rset);
        
        TableContainsManager tcm = new TableContainsManager(); 
        
        for(TableCart t : result){
        	
        	List<TableContains> contains = tcm.readAll(conn, t.getId_cart() );
        	
        	for(TableContains tcns : contains){
        		t.addContent(tcns.getId_article(), tcns.getQty());
        	}
        }
        
        return result;
    }