Interface Expressions Monitoring for BPEL Processes
نویسندگان
چکیده
In this paper, we show how Web services descriptions can be extended with simple declarative behavior specification using interface expressions, a form of regular expressions that describe the possible sequences of externally observable events that a WS-BPEL process can perform. We describe how a concrete (executable) WS-BPEL process can be monitored with respect to such interface expressions, to ensure that it satisfies its associated abstract specification or to detect the occurrence, or nonoccurrence, of some particular sequences of events. More specifically, we describe the implementation of such a run-time monitor, called BPEL.RPM, that uses the Open ESB BPEL service engine.
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