Business-To-Business Integration (B2Bi) is a key mechanism for enterprises to gain competitive advantage. However, developing B2Bi applications is far from trivial. Inter alia, agreement among integration partners about the business documents and the control flow of business document exchanges, applying suitable communication technologies for overcoming heterogeneous IT landscapes as well as ensuring a Quality of Service (QoS) level that is sufficient for B2Bi are major challenges. In this context, applying choreography languages like ebXML BPSS (ebBP) for agreement among integration partners, orchestration languages like WS-BPEL for specifying partner-specific behavior, and Web Services for communication promises seamless interactions among business partners. In this scenario, the conformance of orchestration models to choreography models and cost-effective development are of paramount importance. Consequently, top-down approaches that automatically translate choreography models into orchestration models have been proposed. By now, the realization of QoS attributes has not yet received the necessary attention that makes such approaches suitable for B2Bi. In this paper, we describe a proof-of-concept implementation of a translation of ebBP choreographies into WS-BPEL orchestrations that respects B2Bi relevant QoS attributes.
Recently, the Web Services Interoperability Organization (WS-I) has announced to have completed its interoperability standards work. The latest deliverables include the so-called “Basic Security Profile” and the “Reliable Secure Profile.” This gives rise to the question whether or not Web Services adopters can rely on interoperability and functionality of Web Services stacks, in particular in terms of security and reliability features. To answer this question, the authors thoroughly analyze two important Web Services stacks for interoperability of WS-Security and WS-ReliableMessaging features. Their analysis shows that security and reliability features are far from being implemented in an interoperable manner. Additionally, they reveal that some of those interoperability problems are not even covered by WS-I profiles and therefore conclude that WS-I’s work has not yet resulted in Web Services interoperability. Finally, the authors investigate support for the so-called “Secure WS-ReliableMessaging Scenario” in order to find out whether WS-* adopters can at least rely on the availability of real-world functionality in homogeneous environments.
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