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Contents
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Diagram 1. High-level View
Diagram 2. A Detailed View
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components
waf
under the namespace petstore::controller::ejb
actions
The classes in this package implement an EJB action following the command design pattern.
actions::CartEJBAction
Implements an EJB action following the command design pattern. Depending on the event that triggered it, updates quantity, add a new item or deletes an item to the shopping cart
actions::ChangeLocaleEJBAction
Implements an EJB action following the command design pattern. Changes the locale of the waf::StateMachine, ShoppingClientFacade, and the (components) ShoppingCart
actions::CreateUserEJBAction
Implements an EJB action following the command design pattern. Creates a user in the SignOnEJB, associates a ShoppingClientFacade to it.
actions::CustomerEJBAction
Implements an EJB action following the command design pattern. It creates or updates a customer based on the type of event that occurred
actions::OrderEJBAction
Implements an EJB action following the command design pattern. Creates an order, empties the cart and creates an OrderEventResponse
actions::SignOnEJBAction
Implements an EJB action following the command design pattern. It signs a user on.
ShoppingClientFacade
(Stateful) caches references and provides unified access to customer, shopping cart, and user ID.
ShoppingControllerEJB
(Stateful) Session Bean that provides access to the Shopping Client Facade. Extends the WAF EJB controller (EJBControllerLocalEJB).
Under the namespace petstore::controller::events
CartEvent
This Event contains the information for the EJBController of a change the state of the shopping cart. There are four basic types of cart events: ADD_ITEM, DELETE_ITEM, andUPDATE_ITEM(S)
CreateUserEvent
This Event contains the new username and password
CustomerEvent
This Event contains contact information, credit card, and profile information of a customer
OrderEvent
This Event contains the information about credit cart, billing and shipping of an order.
OrderEventResponse
This Event contains information about an order that has been placed.
SignOnEvent
This Event contains the information for the EJBController of the username that signed on.
under the namespace petstore::controller::web
actions
The classes in this package implement an Web actions following the command design pattern.
actions::CartHTMLAction
Processes a user change in the shopping cart. Changes include: adding items, removing items, updating item quantities, emptying the cart
actions::CreateUserHTMLAction
Processes a user sign on.
actions::CustomerHTMLAction
Processes a user changes/creation of a customer. Changes include: create customer, update customer
actions::OrderHTMLAction
Processes a user change in the order.
actions::SignOffHTMLAction
Processes a signoff
BannerHelper
This class relates to some web tier specific display selection where this helper will choose the banner to be displayed based on the category. The mapping of banners to categories could also be maintained in a properties file or database.
flow::handlers::CreateUserFlowHandler
This class will forward a user to the screen they left before they attempted to create an account. It is assumed that the SignOn component is used which provides an attribute of which screen to return to.
PetstoreComponentManager
Implements waf::controller::web::DefaultComponentManager and provides access to services in the web tier and ejb tier.
ShoppingWebController
This class is essentially just a proxy object that calls methods on the EJB tier using the waf.controller.ejb.ShoppingClientControllerEJB object. All the methods that access the EJB are synchronized so that concurrent requests do not happen to the stateful session bean.
SignonNotifier
This class will bind with the current session and notify the petstore backend when a SignOn has occurred. This allows for a loose coupling of the SignOn component and the petstoreApplication. Ensure the necessary setup is done in the application when a user signs in.
under the namespace tools::populate
AccountPopulator
Anonymously extends an XMLFilter to create and fill tables with the information that it gets from an XML stream (XMLReader).
AddressPopulator
Anonymously extends an XMLFilter to create and fill tables with the information that it gets from an XML stream (XMLReader).
CategoryDetailsPopulator
Anonymously extends an XMLFilter to create and fill tables with the information that it gets from an XML stream (XMLReader).
CategoryPopulator
Anonymously extends an XMLFilter to create and fill tables with the information that it gets from an XML stream (XMLReader).
ContactInfoPopulator
Anonymously extends an XMLFilter to create and fill tables with the information that it gets from an XML stream (XMLReader).
CreditCardPopulator
Anonymously extends an XMLFilter to create and fill tables with the information that it gets from an XML stream (XMLReader).
ItemDetailsPopulator
Anonymously extends an XMLFilter to create and fill tables with the information that it gets from an XML stream (XMLReader).
ItemPopulator
Anonymously extends an XMLFilter to create and fill tables with the information that it gets from an XML stream (XMLReader).
ProductDetailsPopulator
Anonymously extends an XMLFilter to create and fill tables with the information that it gets from an XML stream (XMLReader).
ProductPopulator
Anonymously extends an XMLFilter to create and fill tables with the information that it gets from an XML stream (XMLReader).
ProfilePopulator
Anonymously extends an XMLFilter to create and fill tables with the information that it gets from an XML stream (XMLReader).
UserPopulator
Anonymously extends an XMLFilter to create and fill tables with the information that it gets from an XML stream (XMLReader).
XMLDBHandler
Extends org.xml.sax.helpers.XMLFilter. Sits between an XMLReader and the client application's event handlers, it modifies the configuration requests as they pass through.
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The tools::populate package is useful for testing environments. In production environments this package should be deleted or updated (synchronizing real data, etc.)
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The tools::populate package contains 12 Populator classes. All of them have a very similar behavior and have the same class method names, but strangely enough there is not a common interface that all classes implement. The same code is repeated over and over, the use of inheritance would be the natural way to go, but apparently the writers of the code did not consider this possibility before jumping to code. This code is difficult to maintain and error-prone.
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