Here is a question about Cairngorm best practices.
In the documentation this is in part four feature driven development,
page 3 for cairngorm .99 it says this:
"First recognize the best practice appraoch of naming all events as
constants on the FrontController instance ShopController."
Later down it says:
"The compiler catches any mistyped events noisily at compile time
rather than failing silently at run time. While Cairngorm does not
require this, its a best practice we highly recommend."
I downloaded the latest Cairngorm store for 2.0 however, and thier
shopController instance is not written in the same format. I was
wondering why? In the 2.0 version they do NOT declare constants, but
in the .99 version they do. What is the best practice?
Below are the two different ShopController code samples. The .99 uses
static vars, while the 2 version does not. In fact the entire method
for calling the associated commands from events are different. So
which is the actual best practice?
Help!
JS.
Here is the .99 ShopController example:
class org.nevis.cairngorm.samples.store.control.ShopController extends
FrontController
{
public function ShopController()
{
initialiseCommands();
}
//----------------------------------------------------------------------------
public function initialiseCommands()
{
addCommand( ShopController.EVENT_GET_PRODUCTS, new
GetProductsCommand() );
addCommand( ShopController.EVENT_ADD_PRODUCT_TO_SHOPPING_CART,
new AddProductToShoppingCartCommand() );
addCommand(
ShopController.EVENT_DELETE_PRODUCT_FROM_SHOPPING_CART, new
DeleteProductFromShoppingCartCommand() );
addCommand( ShopController.EVENT_FILTER_PRODUCTS, new
FilterProductsCommand() );
addCommand( ShopController.EVENT_SORT_PRODUCTS, new
SortProductsCommand() );
addCommand( ShopController.EVENT_VALIDATE_ORDER, new
ValidateOrderCommand() );
addCommand( ShopController.EVENT_VALIDATE_CREDIT_CARD, new
ValidateCreditCardCommand() );
addCommand( ShopController.EVENT_COMPLETE_PURCHASE, new
CompletePurchaseCommand() );
}
//-------------------------------------------------------------------------
public static var EVENT_GET_PRODUCTS = "getProducts";
public static var EVENT_ADD_PRODUCT_TO_SHOPPING_CART =
"addProductToShoppingCart";
public static var EVENT_DELETE_PRODUCT_FROM_SHOPPING_CART =
"deleteProductFromShoppingCart";
public static var EVENT_FILTER_PRODUCTS = "filterProducts";
public static var EVENT_SORT_PRODUCTS = "sortProducts";
public static var EVENT_VALIDATE_ORDER = "validateOrder";
public static var EVENT_VALIDATE_CREDIT_CARD = "validateCreditCard";
public static var EVENT_COMPLETE_PURCHASE = "completePurchase";
}
Here is the version 2.0 ShopController Example:
package com.adobe.cairngorm.samples.store.control
{
import com.adobe.cairngorm.control.FrontController;
import com.adobe.cairngorm.samples.store.command.*
import com.adobe.cairngorm.samples.store.event.UpdateShoppingCartEvent;
import com.adobe.cairngorm.samples.store.event.FilterProductsEvent;
import com.adobe.cairngorm.samples.store.event.GetProductsEvent;;
import com.adobe.cairngorm.samples.store.event.SortProductsEvent;
import com.adobe.cairngorm.samples.store.event.ValidateOrderEvent;
import com.adobe.cairngorm.samples.store.event.ValidateCreditCardEvent;
import com.adobe.cairngorm.samples.store.event.PurchaseCompleteEvent;
/**
* @version $Revision: $
*/
public class ShopController extends FrontController
{
public function ShopController()
{
initialiseCommands();
}
public function initialiseCommands() : void
{
addCommand( GetProductsEvent.EVENT_GET_PRODUCTS,
GetProductsCommand );
addCommand(
UpdateShoppingCartEvent.EVENT_ADD_PRODUCT_TO_SHOPPING_CART,
AddProductToShoppingCartCommand );
addCommand(
UpdateShoppingCartEvent.EVENT_DELETE_PRODUCT_FROM_SHOPPING_CART,
DeleteProductFromShoppingCartCommand );
addCommand( FilterProductsEvent.EVENT_FILTER_PRODUCTS,
FilterProductsCommand );
addCommand( SortProductsEvent.EVENT_SORT_PRODUCTS,
SortProductsCommand );
addCommand( ValidateOrderEvent.EVENT_VALIDATE_ORDER,
ValidateOrderCommand );
addCommand(
ValidateCreditCardEvent.EVENT_VALIDATE_CREDIT_CARD,
ValidateCreditCardCommand );
addCommand( PurchaseCompleteEvent.EVENT_COMPLETE_PURCHASE,
CompletePurchaseCommand );
}
}
}
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