Mssaging is at the heart of OSB. Messages are handled by message flows: a set of instructions on what to do with each message. In Chapter 3, you created your first message flow automatically. Although trivial in nature, that message flow shares the same basic set of components that even the most advanced message flows possess.
In this chapter, we will introduce the basic of message flows, and then reuse the
HelloWorldBiz business service we created in the previous chapter to demonstrate how message flows work.
A proxy service is defined by its message flow. Each message flow is constructed from one or more nodes. If no nodes are added to a message flow, then OSB simply echoes the request message ...