The Apache ODE team announced this month the 1.2 release of the Apache ODE project. These releases includes many new features, including external variables,support for WSDL HTTP binding and REST-style Web Services advanced endpoint configuration, and a lot of small improvements and bug fixes.
WS-CDL has struggled from birth to find mainstream acceptance. Now one of the main authors, Steve Ross-Talbot, has compared one of the principles behind WS-CDL, that of precision in defining services, to that of the micrometer during the early industrial revolution. Can WS-CDL have the same impact as the micrometer and really facilitate service reuse?
JBoss is close to releasing version 1.0 of their "Process Virtual Machine", an ambitious project that seeks to provide a definition language agnostic process execution engine. InfoQ spoke with project lead Tom Baeyens about the project, and how the PVM changes the BPM landscape.
With the advent of Spring and the development of the Dependency Injection pattern, Component Technologies have started providing advanced composition mechanisms. In the past month IBM and SAP published related articles exploring the modern strategies and tactics to develop composite business solutions.
In a new InfoQ minibook, InfoQ SOA Editor and SOA Enterprise Architect Jean-Jacques Dubray describes the state of the art and emerging new approaches in building "Composite Software", solutions created by assembling existing services. The book is available as an InfoQ Minibook, i.e. free of charge in PDF format for InfoQ users. A printed version is available too.
In this presentation, Google architect Gregor Hohpe introduces various concepts for to manage more complex interactions between services, including conversations, choreography, and orchestration. He provides a down-to-earth look at these concepts along with the associated Web services standards like WS-BPEL and WS-CDL, and identifies common patterns in service conversation.
In an InfoQ article, Boris Lublinsky discusses the main approaches to service composition, both from design and implementation point of view, and outlines the benefits of using orchestration. Topics covered include hierarchical vs. conversational composition, composition topologies, and the pros and cons of difference implementation approaches.
Event Driven Architecture (EDA) is starting to emerge as a good and viable option to build better SOAs. David Luckham recently published a 2 part paper supporting this claim and InfoQ published an article on BI & SOA demonstrating it as well.
A group of several vendors suggests a new WS-* spec that goes by the interesting name "WS-BPEL4People". Compared to WS-BPEL which deals with automated business processes, the WS-BPEL4People spec, which has been under works for nearly two years now, aims to add human workflow capabilities to SOA in general and to the recently approved WS-BPEL 2.0 spec specifically.
In this presentation, Google architect Gregor Hohpe takes a look at the architectural aspects of SOA, addressing issues such as the false sense of simplicity and the problems of established programming models.
After nearly four years, WS-BPEL 2.0, the Web Services business process execution language, has become an approved OASIS standard.
Craig and Vittorio release their Live Service Trace Viewer which is an enhancement to the one provided in the .NET 3.0 SDK. The differentiator: you can view the WCF interactions as they happen.
With the recently released public review draft of the WS-BPEL 2.0 specification, an interesting debate has started about the relative merits of BPEL in general and issues surrounding portability, interoperability, and compatibility.