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RE: Can one inline schema import definitions from a second inline schema?

From: Martin Gudgin <mgudgin@microsoft.com>
Date: Fri, 17 Oct 2003 07:50:14 -0700
Message-ID: <DD35CC66F54D8248B6E04232892B63381AE260@RED-MSG-43.redmond.corp.microsoft.com>
To: "Arthur Ryman" <ryman@ca.ibm.com>
Cc: "Lawrence Mandel" <lmandel@ca.ibm.com>, <www-ws-desc@w3.org>, <www-ws-desc-request@w3.org>
But as far as the *schema* processor is concerned they are just two
schemas it's been asked to process...


	From: Arthur Ryman [mailto:ryman@ca.ibm.com] 
	Sent: 17 October 2003 14:56
	To: Martin Gudgin
	Cc: Lawrence Mandel; www-ws-desc@w3.org;
	Subject: RE: Can one inline schema import definitions from a
second inline schema?

	I agree to some extent, but AFAIK, WSDL is the only application
that inlines <schema>. I think the XSD spec assumes you have a single
<schema> per document, i.e. <schema> is the root element. So processing
not one, but two or more inline schemas is a bit of a shock for your
typical XSD processor. So probably the "reasonable" behavior you
describe is undefined. 
	I think it would promote interoperability if the WSDL 1.2 was
clear on this point, one way or the other. From your response, I assume
you would support the use of more than one inline <schema> in the
<types> element.
	Arthur Ryman 
	"Martin Gudgin" <mgudgin@microsoft.com> 
Sent by: www-ws-desc-request@w3.org 

10/17/2003 06:17 AM 

        To:        Lawrence Mandel/Toronto/IBM@IBMCA,
        Subject:        RE: Can one inline schema import definitions
from a second inline schema? 

	To be frank, I think this has very little to do with WSDL. It is
	perfectly coherent for a schema processor, on encountering
	namespace='http://namespace1' /> to say to itself, ah, I have a
	for that namespace, I'll use that here. Likewise, when it
	<xsd:import namespace='http://namespace2' /> it would say, ah,
not seen
	that namespace yet, I'll wait and see what happens.
	> -----Original Message-----
	> From: www-ws-desc-request@w3.org 
	> [mailto:www-ws-desc-request@w3.org] On Behalf Of Lawrence
	> Sent: 16 October 2003 23:19
	> To: www-ws-desc@w3.org
	> Subject: Can one inline schema import definitions from a 
	> second inline schema?
	> Hello,
	> We have customers that do the following in WSDL 1.1:
	> <types>
	>  <schema targetNamespace="http://namespace1" xmlns= 
	> "http://www.w3.org/2001/XMLSchema"
	>    <import namespace="http://namespace2"/>
	>    <complexType name="myComplexType">
	>     <sequence>
	>      <element name="myElement" type="two:B"/>
	>     </sequence>
	>    </complexType>
	>    <complexType name="A">
	>     <sequence>
	>      <element name="elementA" type="xsd:string"/>
	>     </sequence>
	>    </complexType>
	>   </schema>
	>   <schema targetNamespace="http://namespace2" xmlns= 
	> "http://www.w3.org/2001/XMLSchema"
	>    <import namespace="http://namespace1"/> 
	>    <complexType name="myComplexType">
	>     <sequence>
	>      <element name="myElement" type="one:A"/>
	>     </sequence>
	>    </complexType>
	>    <complexType name="B">
	>     <sequence>
	>      <element name="elementB" type="xsd:string"/>
	>     </sequence>
	>    </complexType>
	>   </schema>
	> </types>
	> The customers say that this is not explicitly forbidden by 
	> the WSDL 1.1 specification and I can't find anything that 
	> forbids this in the WSDL 1.1 specification.  However, there 
	> is nothing in the WSDL 1.1 specification that states how to 
	> import a schema defined in the same types section but with a 
	> different namespace.
	> Is this allowed according to the WSDL 1.2 specification?  If 
	> so, what is the correct way to import one inline schema into
	> Thanks,
	> Lawrence Mandel
	> Software Developer
	> WebSphere Studio Application Developer - XML Tools
	> Phone: 905 - 413 - 3814   Fax: 905 - 413 - 4920
	> lmandel@ca.ibm.com
Received on Friday, 17 October 2003 10:50:15 UTC

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