Re: [cmis] Namespace proposal and complex properties with lists

[Florent Guillaume <fg@nuxeo.com>]

On 20 Apr 2009, at 23:18, Julian Reschke wrote:
> Hm,
> this puts property structure into the identifier. Is this really a  
> good idea?
> As CMIS doesn't have residual properties, would that mean that all  
> of these properties would need to be defined on the document type?

As I mentioned, this is just syntactic extension so that parsers don't  
have to be rewritten *if* we later go that route, in extensions or  
CMIS 2.

As I said:
> This sidesteps the problem of having these properties actually  
> available in object types, so this proposal is purely syntactic and  
> for future extensibility, but I think that it makes sense.

I agree that ideally it may be better to have the (currently) fictional:

   <properties name="acme:book">
     <propertyString name="acme:title">
       <value>Brave New World II</value>
     </propertyString>
     <propertyList name="acme:releases">
       <properties>
         <propertyDateTime name="acme:date">
           <value>2008-04-01T00:00:00.000+02:00</value>
         </propertyDateTime>
         <propertyString name="acme:format">
           <value>Hardcover</value>
         </propertyString>
       </properties>
       <properties>
         <propertyDateTime name="acme:date">
           <value>2009-04-15T00:00:00.000+02:00</value>
         </propertyDateTime>
         <propertyString name="acme:format">
           <value>Mass Market Paperback</value>
         </propertyString>
       </properties>
     </propertyList>
   </properties>

rather than:

   <propertyString name="acme:book:title">
     <value>Brave New World II</value>
   </propertyString>
   <propertyDateTime name="acme:book:releases:0:date">
     <value>2008-04-01T00:00:00.000+02:00</value>
   </propertyDateTime>
   <propertyString name="acme:book:releases:0:format">
     <value>Hardcover</value>
   </propertyString>
   <propertyDateTime name="acme:book:releases:1:date">
     <value>2009-04-15T00:00:00.000+02:00</value>
   </propertyDateTime>
   <propertyString name="acme:book:releases:1:format">
     <value>Mass Market Paperback</value>
   </propertyString>

But the latter is simpler to retrofit in to the current XSD schemas  
and protocols.

Florent

-- 
Florent Guillaume, Head of R&D, Nuxeo
Open Source, Java EE based, Enterprise Content Management (ECM)
http://www.nuxeo.com   http://www.nuxeo.org   +33 1 40 33 79 87