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

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:  

From:
Anish Karmarkar <>

To:


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: 

>>

>>

>> ------------------------------------------------------------------------

>>

>> /

>> /

>>

>> /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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