Apache Tuscany Java 1.1 Released: SCA Meets Web 2.0

The Apache Tuscany team announced today the 1.1 release of the Java SCA project. Apache Tuscany is a runtime environment based on the Service Component Architecture (SCA). SCA is a new component model that facilitates the construction of composite applications. SCA is a set of specifications initially developed by IBM and BEA which are now being standardized by OASIS as part of the Open Composite Services Architecture (Open CSA). The members of the working group include: BEA, IBM, Primeton, SAP, Sun Microsystems, Oracle, Red Hat, SOA Software, Xcalia...

Jean-Sebastien Delfino and Luciano Resende (IBM) commented in an InfoQ interview. JS, on the "widget" implementation: "you can now include, in an SCA composition, client components implemented as HTML + Javascript the AJAX way, running in your Web browser, wired to server-side components using Tuscany's JSON-RPC and ATOM bindings for example. Basically it is about embracing Web 2.0 client components in a distributed SCA composition...

We generate some additional JavaScript after introspection of the references the implements all the the plumbing code to support JSON-RPC and ATOM and the Reference class wrapping the references that you can use in your business logic. The Tuscany community will have to decide what's coming ahead, as we're just getting 1.1 out, but I envision progress in the following areas: simpler and more complete SCA policy support; more policies -- making progress with the transaction policy; improved end-to-end SCA contribution / deployment / distribution story; an SCA domain administration application; integration with Geronimo; improvements of the Web 2.0 bindings -- perhaps using Apache Abdera for ATOM and adding cross-domain support to the JSON-RPC binding; optimizations of the Tuscany databinding support; more platform integration testing on Tomcat, Geronimo, etc." Luciano: "BPEL support is not complete yet: services are supported, but references are not; properties are not supported either, but they will require an extension to the BPEL language. This may come next if it is requested by the community. I have just updated the BPEL implementation guide."

Read the complete article by Jean-Jacques Dubray, InfoQ.

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