Re: [sca-bindings] BINDINGS-127: Problems with the Extension Points in theXSD for binding.ws

[Mike Edwards <mike_edwards@uk.ibm.com>]

Anish,

Both are good points.

I'll post a revised proposal for binding.ws.

The changes proposed for wireFormat
and operationSelector base types will then have to be forwarded to the
Assembly TC
as these are defined in the sca-core.xsd.
 :-(

Yours,  Mike.

Strategist - Emerging Technologies, SCA & SDO.
Co Chair OASIS SCA Assembly TC.
IBM Hursley Park, Mail Point 146, Winchester, SO21 2JN, Great Britain.
Phone & FAX: +44-1962-818014    Mobile: +44-7802-467431  
Email:  mike_edwards@uk.ibm.com

From:	Anish Karmarkar <Anish.Karmarkar@oracle.com>
To:	sca-bindings@lists.oasis-open.org
Date:	14/04/2010 19:05
Subject:	Re: [sca-bindings] BINDINGS-127: Problems with the Extension Points in the XSD for binding.ws

---

Two comments below.

-Anish
--

On 4/14/2010 9:34 AM, Eric Johnson wrote:
> Logged as: http://www.osoa.org/jira/browse/BINDINGS-127
>
> -Eric.
>
> On 04/14/2010 03:37 AM, Mike Edwards wrote:
>>
>> Target: sca-wsbinding-1.1-spec-cd03-rev3.doc
>>
>> Description:
>>
>> The SCA XSDs mix two different forms of extensibility and this
causes
>> significant problems such as UPA errors.
>>
>> The two forms of extensibility are:
>>
>> 1) The use of substitution groups for the extensibility of:
>>
>> implementation
>> interface
>> binding
>> wireFormat
>> operationSelector
>> importBase
>> exportBase
>>
>> 2) The use of
>>
>> <any namespace="##other" processContents="lax"
minOccurs="0"
>> maxOccurs="unbounded"/>
>>
>> for extensibility in many locations
>>
>>
>> A UPA problem potentially exists in any place where ONE or MORE
of the
>> elements in the list 1) above is declared
>> to be used within another element in combination with 2) in a
sequence
>> or choice where it may occur that one of the
>> list 1) elements is validly succeeded by an <any/> of the
form in 2).
>> IF an extended version of any of the 1) elements
>> is created, in a non-sca namespace (this is REQUIRED for any
>> non-standard extension), then a UPA error will be
>> reported whenever such an extension is used.
>>
>> This occurs in the XSD sca-binding-ws-1.1-cd04.xsd
>>
>> <complexType name="WebServiceBinding">
>> <complexContent>
>> <extension base="sca:Binding">
>> <sequence>
>> <element name="endpointReference" type="wsa:EndpointReferenceType"
>> minOccurs="0" maxOccurs="unbounded"/>
>> <any namespace="##other" processContents="lax"
>> minOccurs="0" maxOccurs="unbounded"/>
>> </sequence>
>> <attribute name="wsdlElement" type="anyURI"
use="optional"/>
>> <attribute ref="wsdli:wsdlLocation" use="optional"/>
>> </extension>
>> </complexContent>
>> </complexType>
>>
>> The sca:Binding base contains both wireFormat and operationSelector
>> elements - these then clash with the <any/> extensibility
>>
>> Proposal:
>>
>> Replace the <any/> extensibility with extensibility using
the
>> sca:extensions element as follows:
>>
>> <complexType name="WebServiceBinding">
>> <complexContent>
>> <extension base="sca:Binding">
>> <sequence>
>> <element name="endpointReference" type="wsa:EndpointReferenceType"
>> minOccurs="0" maxOccurs="unbounded"/>

If we have sca:extensions element, we don't need to define 
sca:endpointReference we can just reuse the WSA element:
<element ref="wsa:endpointReference minOccurs="0" maxOccurs="unbounded"/>

In addition, I don't think the <any> in operationSelector and wireFormat
is necessary. We should remove it. That would make it consistent with 
the other substitution group heads that we have.

-Anish
--

>> <element ref="sca:extensions" minOccurs="0"
maxOccurs="1" />
>> </sequence>
>> <attribute name="wsdlElement" type="anyURI"
use="optional"/>
>> <attribute ref="wsdli:wsdlLocation" use="optional"/>
>> </extension>
>> </complexContent>
>> </complexType>
>>
>>
>> Yours, Mike.
>>
>> Strategist - Emerging Technologies, SCA & SDO.
>> Co Chair OASIS SCA Assembly TC.
>> IBM Hursley Park, Mail Point 146, Winchester, SO21 2JN, Great
Britain.
>> Phone & FAX: +44-1962-818014 Mobile: +44-7802-467431
>> Email: mike_edwards@uk.ibm.com
>>
>>
>> ------------------------------------------------------------------------
>>
>> /
>> /
>>
>> /Unless stated otherwise above:
>> IBM United Kingdom Limited - Registered in England and Wales with
>> number 741598.
>> Registered office: PO Box 41, North Harbour, Portsmouth, Hampshire
PO6
>> 3AU/
>>
>>
>>
>>
>>
>>

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