GeoBliki's Blog: Tag WfXML

Architecture & Process: What was WfXML-R doing at that conference?

Patrice Cappelaere — Fri, 25 Apr 2008 21:46:00 +0000

Since Sandy Kemsley asked the question, I will try to attempt to explain this a second time.

Architecture & Process 2008 is a great avenue to expose users & architects to new key technologies.

Enterprise Architecture and current BPM initiatives are pretty much based on a SOAP-based architecture. This is a wonderful high-octane technology, if you and your pit crew can afford it. But this is reserved to an elite group targeting a niche market: Corporate America 500 that can afford it.

WfXML-R targets that rest of the market (or the remaining 80% of it) with a simpler approach based on several Web 2.0 standards and protocols including Atom/AtomPub, GData, OpenSearch and OpenID/OAuth to manage user authentication, secure transactions and user authority delegation to workflows. The last two standards were the final keystones to a RESTful architecture that can be used at the Enterprise level.

So what is this doing at this Conference? Hummmmm????

An RESTful interoperable and non-proprietary standard sponsored by the WfMC and the OpenGeoSpatial Consortium will be a huge achievement for this Community.

The OGC demonstrated three interoperable workflow engines during OWS-5 using WfXML-R inclusing OpenWFE and a BPEL engine. Hitachi Interstage and the SUNGARD Carnot may very well be next based on discussions we had this week.

It is at least satisfying that some other people such as Jason Woodruff got it right away and seem pretty excited about it. And yes, Jason, Interface 3 could be another one that ought to be included. But not this time! BPAF is next and I will let Michael zur Muelhen announce it very soon :).

New WfXML-R Prototype Effort at the Stevens Institute

Patrice Cappelaere — Sun, 30 Mar 2008 13:31:00 +0000

As part of his Bachelor Thesis “The application of Wf-XML to scientific workflow: a satellite imaging case study” Philipp Hansen is currently working with us on a proof of concept prototype for WfXML-R at the Stevens Institute of Technology. His advisor there is Michael zur Muehlen.

He is following a two step approach. First step is the implementation of a WfXML-R interface for Sungard’s Carnot Workflow Engine, which already features the ASAP-based Wf-XML for workflow interoperability. This implementation will be tested with scientific workflows within NASA sensor web environment.

The second step is publishing and discovery of available workflows via APP according to the current WfXML-R version.

This will be the fourth implementation of WfXML-R for RESTFul Workflow Engines.

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WfXML-R

Patrice Cappelaere — Sat, 12 Jan 2008 14:59:00 +0000

Workflow interoperability is a major concern for the OGC and the WfMC. A simple and RESTful API is critical for early adoption. With the help of John Mettraux of OpenWFE fame, Matt Zukovsky, Keith Swenson and many others, we are documenting this effort dubbed WfXML-R leveraging many years of work done by Keith and the WfMC group.

We need some help and early adopters. Continuous feedback to the nascent specification would be appreciated.

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