ASP Pizzas to JSP in VS .NET

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while(enuhasMoreElements()) { pizza = (Pizza)enunextElement(); this_pizzaID = "PizzaID_" + pizzagetP_name(); this_pizzaSize = "PizzaSize_" + pizzagetP_name(); this_pizzaDough = "PizzaDough_" + pizzagetP_name(); String sID = requestgetParameter(this_pizzaID); String sSize = requestgetParameter(this_pizzaSize); if ((sID != null) && (sIDlength()>0) && (sSize != null) && (sSizeequals(pizzagetP_size()))) { int quantity = Integerparselnt(sID); String dough = requestgetParameter(this_pizzaDough); OrderDetail orderDetail = new OrderDetail(); Pizza selectedPizza = new PizzaO; selectedPizzasetP_name(pizzagetP_name()); selectedPizzasetP_size(pizzagetP_size()); orderDetailsetOd_pizza(selectedPizza); orderDetailsetOd_quantity(quantity); orderDetailsetOd_dough(dough); currentOrderaddOrderDetail(orderDetail); } }
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The new arrangement determines that the state of the order is maintained alternately between the form and the OrderSF bean The form is used to take the order, calculate the price, and update the form When the order is confirmed, the bean contains the information about the order, uses it to show the confirmation, and delivers the order Additions to thisJSP page include calling the PizzaServicesSL bean so that it can obtain the special of the day, which was not a functionality that E-Pizza had available It also retrieves the number of custom pizzas to be displayed from the weblogic properties file:
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int custom_pizzas = Integer parselnt (System get Property) " jsw customPizzas" ,
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"4" ) ) ;
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The default is four pizzas This is a nice enhancement, as in the ASP code it is set as a fixed value within the code Next in line for surgery is Order Confirm asp This one falls into the literal translation category Let us have a more detailed look into some of the translations For example, listing the pre-defined pizzas in ASP is done with the following code:
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<%dpizzas_scart = Session( "dpizzas_scart" ) %> <%For temp_counter = 1 to Session) "dpizzas_scart_Count " ) % > <tr> <td width="13%" BGCOLOR="#ffffcc"> <p align="center"xfont color="red"xb> <%= dpizzas_scart (Item_Qty, temp_counter) %> </k </fontx/p> </td> <td width="16%" BGCOLOR="#ffffcc"> <p align="center"xf ont color =" red "><k
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<%= dpizzas_scart(Item_Size,temp_counter) %> < / b x / f o n t x / p > </td> <td width="51%" BGCOLOR="ttffffcc"> <p align="center"xfont color="red"xb> <%= dpizzas_scart(Item_Description,temp_counter) %> < / b x / f o n t x / p > </td> <td width="20%" BGCOLOR="#ffffcc"> <p align="center"xfont color="red"xb> <%=FormatCurrency(dpizzas_scart(Item_Price, temp_counter), 2 ) % > < / b x / f o n t x / p > </td> </tr> <%Next%>
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The corresponding translation into aJSP page uses the following code:
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<%// First displaying the pre-defined Pizzas %> < % Vector orderDetails = null; If (currentOrder != null) orderDetails = currentOrdergetOrderDetail(); Else orderDetails = null; If (orderDetails != null) { For (int vi = 0; vi < orderDetailssize(); vi++) { OrderDetail orderDetail = (OrderDetail) orderDetailselementAt(vi); If (orderDetailgetOd_type() == OrderDetailPREDEFINED) { %> <tr> <td width="13%" BGCOLOR="#ffffcc"> <p align="center"> <font color="red"xb> <%= orderDetailgetOd_guantity() %> < / b x / f o n t x / p > </td> <td width="13%" BGCOLOR="#ffffcc"> <p align="center"> <font color="red"xb> <%= orderDetailgetOd_pizza()getP_size() </bx/f ontx/p> </td> <td width="13%" BGCOLOR="#ffffcc"> <p align="center"> <font color="red"xb> <%= orderDetailgetOd_dough() %> </bx/fontx/p> </td>
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<td width="41%" BGCOLOR="#ffffcc"> <p align="center"> <font color="red"xb> <%= orderDetailgetOd_pizza()getP_name() %> </bx/fontx/p> </td> <td width="20%" BGCOLOR="#ffffcc"> <p align="center"> <font color="red"xb> $<%= UtilformatToString(orderDetailgetOd_price()) %> </bx/fontx/p> </td> </tr> <% } } } %>
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The differences can be broken down in two parts First, they verify that there is a vector containing the order detail Then, embedded in the HTML code there is an actual reference to the order detail: <%= orderDetailgetOd_pizza()getP_name() %> The last ASP victim is Order Thanks asp
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The procedure is the same as with the previous ASP file During a break the Troops decide to have a conversation with their peers at E-Pizza and share some of the experiences Q The first thing that comes up is the pain of having to declare every single variable in Java, which is not necessary in ASP, although it is considered good practice to do so by using the Option Explicit mode Another issue that the ASP Jockeys brought up was the pain in handling the cache of ASP, especially in pages with different operational modes This does not seem to be an issue when working with JSP The final problem was the fact that Java is case sensitive, whereas ASP does not really care about the case of variable names, and getting used to a case sensitive language after being familiar with a more relaxed one can be difficult at first On the bright side, the nice thing is that both technologies offer predefined objects with similar names that reference the same entities, for example session and request
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They all had to agree that JSP is a rather new and immature technology When they compared Visual InterDev with the tools the Wonder Troops were using to develop the JSP pages, there was a difference
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At the time of writing, Macromedia DreamWeaver is one of the few tools that offer the capability of being a JSP editor, but in general it was felt that Visual InterDev was a more mature product Forte for Java: Community Edition is another useful tool for editing and debugging JSP pages Another advantage is that it can be freely downloaded from the Sun site at http://wwwsuncom/forte/ffj/ce/
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