| |
| description |
In a message-driven SOA, message exchange patterns (MEPs) define a
reusable notion of conversational contracts between a service
consumer and a service provider from the provider's point of
view. They enable a common understanding regarding a message flow
between both parties. In contrast to version 1.1 of the Web Service
Description Language (WSDL) the current version 2.0 has introduced a
template for defining such patterns that allows to define and
reference patterns beyond the standard input/output ones defined in
the specification. Although reasonable, this approach brings several
disadvantages which we point out in this paper. Since WSDL 2.0 MEPs
and WS-BPEL processes describe interaction behaviour from the same
perspective BPEL makes a perfect candidate as a language for
formalising MEPs, especially because it provides a powerful
mechanism for describing control flow and correlation of related
messages. In this work we propose a way to formalising MEPs using a
WSDL-less BPEL dialect called BPEL light. We introduce a new
abstract BPEL profile for defining reusable and machine-readable
MEPs that is capable of expressing arbitrary message exchanges. With
this approach we pave the way for more flexible interaction styles
and reduce the impedance mismatch between imperative programming and
message orientation.
|
| publisher |
IEEE Computer Society
|
| type |
Text
|
| Article in Proceedings
|
| source |
In: Proceedings of the 5th International Conference on Services
Computing (SCC'08) Research Track, pp. 353-360
|
| contributor |
Institut für Architektur von Anwendungssystemen
(IAAS)
|
| subject |
Office Automation (CR H.4.1)
|
| The Computer Industry (CR K.1)
|