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Business Process Execution Language for Web Services (BPEL4WS)
allows defining both, business processes that make use of Web
services, and business processes that externalize their
functionality as Web services. This short paper introduces the basic
language elements of BPEL4WS using a simple example. The concepts
underlying the language are briefly explained: establishing
bilateral partnerships, correlating messages and processes, defining
the order of the activities of a business process, event handling,
handling exceptions via long-running transactions, and the usage of
BPEL4WS in pure B2B scenarios. The paper finishes off by presenting
the resulting application structure and the resulting economical
implications.
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