- From: Martin Gudgin <mgudgin@microsoft.com>
- Date: Thu, 29 Jul 2004 08:06:59 -0700
- To: <www-ws-desc@w3.org>
- Cc: "Sanjiva Weerawarana" <sanjiva@watson.ibm.com>, "Jeffrey Schlimmer" <jeffsch@windows.microsoft.com>
The WSDL 2.0 Part 1 Last Call Working Draft[1] contains definitions for Feature components[2] and Property component[3], two related constructs. IBM Corp. and Microsoft Corp. object to their inclusion in WSDL 2.0 specification for several reasons; 1. They significantly exceed the scope of the input specification WSDL 1.1[4]. 2. They overlap entirely with other specifications currently external to the W3C[5,6,7] 3. Features and properties overlap substantially with XML-based extensibility mechanisms, making them redundant and significantly complicating the language. 4. We believe features and properties will prove to be confusing to WSDL users and will often be misused or unused. 5. XML-based extensibility is backward compatible with WSDL 1.1, which has extension points but no features or properties. Thus spec authors will have to write different extension mechanisms for WSDL 1.1 and for WSDL 2.0 in order to take advantage of features and properties. 6. There is little evidence that extension authors will use them instead of XML-based extensibility. There is abundant evidence that extension authors will use XML-based extensibility instead. Regards Martin Gudgin, Microsoft Corp. Sanjiva Weerawarana, IBM Corp. [1] http://www.w3.org/2002/ws/desc/wsdl20 [2] http://www.w3.org/2002/ws/desc/wsdl20#Feature [3] http://www.w3.org/2002/ws/desc/wsdl20#Property [4] http://www.w3.org/TR/2001/NOTE-wsdl-20010315 [5] http://msdn.microsoft.com/library/en-us/dnglobspec/html/ws-policy.asp [6] http://msdn.microsoft.com/library/en-us/dnglobspec/html/ws-policyasserti ons.asp [7] http://msdn.microsoft.com/library/en-us/dnglobspec/html/ws-policyattachm ent.asp
Received on Thursday, 29 July 2004 11:07:29 UTC