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Contract Versioning, Compatibility and Composability

Kjell-Sverre and Jean-Jacques revisit the principles of contract design focusing on the concept of compatible contract based on XML, XML Schema and WSDL extensibility to foster service reuse and complement Governance. The article includes a novel approach to manage message types in relation to an enterprise data model.

Jean-Jacques Dubray Kjell-Sverre Jerijærvi
on Dec 09, 2008
Writing A Textual DSL Using 'OSLO'

Microsoft unveiled the building blocks of their “OSLO” vision during the PDC event in Los Angeles in October. As key part the Oslo tools is a language for modeling textual DSLs. This article is an attempt to try and use the language to write our own language definition.

Dilip Krishnan
on Dec 08, 2008
Structured Event Streaming with Smooks

Smooks is best known for its transformation capabilities, but in this article Tom Fennelly describes how you can also use it for structured event streaming.

Tom Fennelly
on Nov 26, 2008
Harvesting Service Orientation

In this article, Wil Leeuwis explores lessons that can be learned from a historical perspective when thinking about SOA. He argues there's a lot of old, well understood and practically applied theory that can help us harvesting the profits of the innovation part of the services-world.

Wil Leeuwis
on Nov 22, 2008
Why BPEL is not the holy grail for BPM

In the Business Process Modeling world there is still an ongoing standards debate. In this article, Pierre Vigneras of the Bull BPM team, discusses problems with one of those standards - BPEL. Pierre walks us through a simple parallel process and discusses the numerous issues practitioners face in trying to express an unstructured flow based on a structured model.

Pierre Vigneras
on Oct 21, 2008
Implementing SOA Governance

The hardest thing about a successful adoption of SOA is not the technology, but rather, the culture change. In this article, Todd Biske offers his perspective on using Governance to drive this culture change. The article covers the establishment of policies, defines the role of a CoE and look at techniques to help with the enforcement of these policies.

Todd Biske
on Oct 20, 2008
How to GET a Cup of Coffee

In this article, Jim Webber, Savas Parastatidis and Ian Robinson show how to drive an application's flow through the use of hypermedia in a RESTful application, using the well-known example from Gregor Hohpe's "Starbucks does not use Two-Phase-Commit" to illustrate how the Web's concepts can be used for integration purposes.

Jim Webber Savas Parastatidis Ian Robinson
on Oct 02, 2008
AtomServer – The Power of Publishing for Data Distribution – Part Two

In this article, Bryon Jacob and Chris Berry continue their description of AtomServer, their implementation of a full-fledged Atom Store based on Apache Abdera. The authors have created several extensions to the AtomPub specification, among them Auto-Tagging, Batching, and Aggregate Feeds.

Chris Berry Bryon Jacob
on Sep 26, 2008
Quest for True SOA

Alex Maclinovsky explains why his vision of Governance differs from those prevailing in the industry. Based on his precise understanding of what a SOA platform should do, he defines a unified view of SOA Governance which he claims "has the potential to take the imperfect SOA platforms and implementations ... and transform them into true Service Oriented Architectures..."

Alex Maclinovsky
on Sep 10, 2008
SOA Governance: An Enterprise View

SOA architect Michael Poulin explains the necessity for SOA governance to ensure an SOA initiative's success, and explains the role the OASIS SOA Reference Model and the accompanying SOA Reference Architecture assign to SOA Governance. Michael observes SOA governance specifics from the enterprise perspective and illustrates them with several examples of SOA Governance policies.

Michael Poulin
on Aug 20, 2008
Book Review: Applied SOA

Applied SOA is a new book on Service Oriented Architecture written by 4 leading SOA practitioners that aims at making you successful with your SOA implementation. In particular, this book is going to help you tie your SOA initiative with your Enterprise Architecture, IT Governance, Core Data and BPM initiatives.

Jean-Jacques Dubray
on Aug 04, 2008
Service-Oriented Development with Consumer-Driven Contracts

In this article, Ian Robinson discusses how "consumer-driven contracts", in the form of "stories for services" and unit tests exchanged between service development streams, can strengthen the service-oriented development lifecycle. In contrast to contracts defined from the POV of the provider, consumer-driven contracts result from combining the demands of all known service consumers.

Ian Robinson
on Jul 27, 2008

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