A Human Readable Platform Independent Domain Specific Language for BPEL

The basic building blocks of SOA systems are web services. WSDL, the standard language for defining web services, is far too complex and redundant to be efficiently handled by humans. Existing solutions use either graphical representations (UML, etc.), which are again inefficient in large scale projects, or define web services in the implementation’s native language, which is a bottom-up approach risking interface stability. Both lack support for concepts like conditions, access-rights, etc. The domain specific language introduced in this paper uses a Java and C#-like language for describing web service interfaces. It has the same descriptive power as WSDL while maintaining simplicity and readability. Examples show how to use the language, and how it can be compiled into WSDL.

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