HAIFA : An XML Based Interoperability Solution for Haskell

Recent research in orchestration of composite web-services has highlighted Haskell as a language ideal for workflow orchestration semantics at an implementation level. Since Haskell is built on the concept of building larger functions by composing a number of smaller functions, it is ideal for composing services as well. In order to compose service operations though, it is necessary to enable Haskell to view services as side-effecting functions. Our goal, accordingly, is the creation of a framework both for client-side access of web-service operations, in terms of Haskell functions, and also a server-side function publishing framework, which would allow Haskell functions to be bound to URLs for execution. This paper introduces HAIFA, a service interoperation toolkit which goes some of the way to providing these features, and provides a foundation on which service composition can be achieved.