Business components (also called exits) perform the actual application processing of messages in iWay Service Manager (iSM). Business component use is coordinated through configured channels and process flows in iSM. While iWay provides a wide variety of such components, from time to time a specific application requires some business service not available through the usual iWay libraries. In such cases, application developers can write their own components to satisfy their specific requirements.
This chapter describes how to write iSM business components. Exits include the development of nodes of a process flow called a service in iWay Integration Tools (iIT). All exits, regardless of whether they are to be used as agents (services), preparsers, or preemitters extend a common class called XDExitBase, which manages metadata and connects the exit component to iSM.