invoicer

The Invoicer must provide a design for the implementation or method for each of these service operations.

An Invoicer participant provides the Invoicing service for calculating the initial price for a purchase order.

Calculating the initial and final price for an invoice involves a slightly more complex protocol between an orderer and invoicer.

The service channel that connects the orderProcessor request to the Invoicer service establishes a connection in a value chain.

InvoicingService is a class that specifies the conversation, communication protocol, or interaction rules between an orderer and invoicer.

The service specification consists of two roles: invoicer and orderer.

As Figure 8. shows, the Invoicer component owns two behaviors that have the same name as the provided operations.

Figure 9 shows the Invoicer component owns two behaviors that have the same name as the provided operations.

The invoicing port can also specify the possible bindings provided by the Invoicer component for use in connecting with other components.

We model this by adding a port to the Invoicer, which is of the type InvoiceService service specification.

Figure 8 shows the Invoicer with the invoicing service added.

For example, consider the Invoicer service provider shown in Figure 1.

The Invoicer provides the Invoicing interface, which involves two operations