In the OrderProcessor.bpel code, the partner link defines the link name and type, and the role of the BPEL process service component in interacting with the partner service.

From the BPEL source code, the CreditCardAuthorizationService partner link definition is shown below:

<partnerLink name="CreditCardAuthorizationService"
    partnerRole="CreditAuthorizationPort"
    partnerLinkType="ns2:CreditCardAuthorizationService"/>

Variable definitions that are accessible locally in the Scope_AuthorizeCreditCard scope are shown in the following example. The types for these variables are defined in the WSDL for the process itself.

<variable name="lCreditCardInput"
          messageType="ns2:CreditAuthorizationRequestMessage"/>
<variable name="lCreditCardOutput"
          messageType="ns2:CreditAuthorizationResponseMessage"/>

The WSDL file defines the interface to your BPEL process service component:

• The messages that it accepts and returns

• The operations that are supported

• Other parameters