The HelloProductArrangement sample program introduced here assumes that shop staff use a business system to perform stock allocation and delivery arrangement when securing products.

The following figure and table describe the processing details of the HelloProductArrangement sample program:

Figure 2-6 Processing details of the HelloProductArrangement sample program

Table 2-3 Processing contents of the HelloProductArrangement sample program

Component	Type	Description
Service requester	HTML Servlet JSP	Displays the input screen, and calls the product arrangement business process. Obtains (as the return value) the results of calling the stock management service, and displays them on the output screen. Obtains (as the return value) the results of calling the delivery reception service, and displays them on the output screen.
Product arrangement business process	Business process	Receives a request from the service requester, and calls the stock management service via the stock management adapter. Receives a request from the service requester, and calls the delivery reception service via the delivery reception adapter. Obtains the results of calling the stock management service via the stock management adapter, and returns them to the service requester. Obtains the results of calling the delivery reception service via the delivery reception adapter, and returns them to the service requester.
Stock management adapter	Service adapter	Receives a request from the product arrangement business process, and calls the stock management service. Returns the response of the stock management service to the product arrangement business process.
Delivery reception adapter	Service adapter	Receives a request from the product arrangement business process, and calls the delivery reception service. Returns the response of the delivery reception service to the product arrangement business process.
Stock management service	Web Service	In response to a call from the product arrangement business process, allocates product stock and returns the allocation number to the product arrangement business process.
Delivery reception service	Web Service	In response to a call from the product arrangement business process, returns the delivery number obtained as a result of delivery arrangement.