JavaOne 2010 - JAX-WS.Next: Future Directions and Community Input

I thought that I should mention an interesting BOF: JAX-WS.Next: Future Directions and Community Input. JAX-WS, as you know, is the worthy successor of JAX-RPC, improving on it in many ways and it has become increasingly important since most app servers are supporting web profiles. It is pretty much the standard way of doing web services in the Java EE/light EE world.
This session presented many ideas being explored by Sun/Oracle engineers in the RI v2.2.2, most notably how JAX-WS will now take advantage of the Servlet 3.0 spec (1 request can be serviced by many threads) and the wsdl pluggability (what you see on Tomcat 7 would become portable to other containers). It was stressed quite a few times that the ideas discussed in this BOF still need final approval from the JCP.
Some of the features being proposed:

• Support for stateful web services for H/A (support for broken HTTP connections)
• Schema validation: That’s a welcome addition as most people do it (not necessarily in the production environment) one way or another in one-off ways; the class would be annotated with the @SchemaValidation; this would ensure that input/output are properly validated
• Official support for doc/literal wrapper style
• The ability to close Proxy.close() and have a chance to clean up resources
• WSDL 1.1 binding extensions for SOAP 1.2; this would allow the developer to run with the -extension
• MTOM Policy support via @MTOM to allow for the optimized serialization of wsdl/messages; the policy itself gets published in the wsdl
• Addressing policy: long-running operations would send the response in another HTTP Connection; also allow for anonymous/non-anonymous response mechanisms
• Finally (and most important) support for asynchronous behavior on the server side; the client models would remain the same with a choice of polling or callback but the server side invoke method returns void (i.e. immediately) and does not block

Most of these features are already in Glassfish, WebSphere and WebLogic.

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