Re: [XCON] Cloning: Additional data in the data model

["Oscar Novo" <oscar.novo at ericsson.com>]

Hi Simon,

We decide to go for that solution to avoid the (UPA) Unique Particle Attribution constraint as you said. This problem is with version 1.0. The UPA constrain might be solved with the coming new 1.1 version. We could modified the schema once the 1.1 version is released. 

Cheers,

Oscar

-----Original Message-----
From: spromano at unina.it [mailto:spromano at unina.it] 
Sent: 30. tammikuuta 2009 20:37
To: Oscar Novo
Cc: xcon at ietf.org
Subject: Re: [XCON] Cloning: Additional data in the data model

Hello again, Oscar. While working on the data model, we realized that the new schema you put in the draft (in appendix) does not define the XCON data model explicitely as an extension of the one contained in rfc4575. You import the mentioned schema, and you define further elements, which are the new ones introduced within XCON. This works fine, thanks to the presence of the "any" element:

<xs:any namespace="##other" processContents="lax" minOccurs="0"  
maxOccurs="unbounded"/>

Personally, I would have liked something more explicit, e.g.:

*****************************************************************

xmlns:info="urn:ietf:params:xml:ns:conference-info"

<xs:import namespace="urn:ietf:params:xml:ns:conference-info"   
	schemaLocation="rfc4575DataModel.xsd"/>

<xs:element name="conference-info" type="conference-type"/>

<xs:complexType name="conference-type">
  <xs:complexContent>
   <xs:extension base="info:conference-type">
    <xs:sequence>
     <xs:element name="conference-password" type="xs:string"/>
     <xs:element name="mixing-mode" type="mixing-mode-type"/>
     <xs:element name="codecs" type="codecs-type"/>
     <xs:element name="controls" type="controls-type"/>
     <xs:element name="language" type="xs:language"/>
     <xs:element name="allow-sidebars" type="xs:boolean"/>
     <xs:element name="conference-time" type="conference-time-type"/>
     <xs:element name="allow-conference-event-subscription" type="xs:boolean"/>
     <xs:element name="to-mixer" type="mixer-type"/>
     <xs:element name="provide-anonymity" type="provide-anonymity-type"/>
     <xs:element name="allow-refer-users-dynamically" type="xs:boolean"/>
     <xs:element name="allow-invite-users-dynamically" type="xs:boolean"/>
     <xs:element name="allow-remove-users-dynamically" type="xs:boolean"/>
     <xs:element name="from-mixer" type="mixer-type"/>
     <xs:element name="join-handling" type="join-handling-type"/>
     <xs:element name="user-admission-policy"  
type="user-admission-policy-type"/>
     <xs:element name="allowed-users-list" type="allowed-users-list-type"/>
     <xs:element name="deny-users-list" type="deny-users-list-type"/>
     <xs:element name="floor-information" type="floor-information-type"/>
    </xs:sequence>
   </xs:extension>
  </xs:complexContent>
</xs:complexType>

*******************************************************************************

This solution looks a bit "cleaner" to me, even though it might violate the Unique Particle Attribution constraint with some XML engines (e.g. JAXB).

What is your feeling about this?

Simon

Quoting Oscar Novo <oscar.novo at ericsson.com>:

> Hi folks,
>
> In IETF-73 has been a proposal to expand the data model to support the 
> cloning method defined in the framework. At the moment, the data model 
> supports the cloning method though the 'cascaded-focus' element which 
> contains a 'parent' conference URI but it might be needed to add few 
> more elements to be align with CCMP.
>
> Some elements that could be added are:
>
> - An element that contains all the 'non-independent' children 
> conferences
> - A policy attribute/element that indicates the "parent enforceable" 
> of every element. However, it would make more sense to add it in a 
> draft that discusses conference policies.
>
> It would be nice to know the opinion of the WG whether we want to 
> support entirely this property or not.
>
> Cheers,
>
> Oscar
>
>
>



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                     Simon Pietro Romano
               Universita' di Napoli Federico II
                  Computer Science Department
         Phone: +39 081 7683823 -- Fax: +39 081 7684219
                 e-mail: spromano at unina.it

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