Re: Issue 6403: Enumertion Policy - some things for us to consider

wsp:Optional doesn't mean, "optional" it means that there are two 
alternatives, one with and one without the
assertion containing the wsp:Optional attribute. I guess I am missing the 
point of what wsp:Optional has to 
do with there being some operations with and some without 
wsenp:Enumeration.

Cheers,

Christopher Ferris
IBM Distinguished Engineer, CTO Industry Standards
IBM Software Group, Standards Strategy
email: chrisfer@us.ibm.com
blog: http://www.ibm.com/developerworks/blogs/page/chrisferris
phone: +1 508 234 2986





From:
Gilbert Pilz <gilbert.pilz@oracle.com>
To:
Katy Warr <katy_warr@uk.ibm.com>
Cc:
public-ws-resource-access@w3.org
Date:
04/21/2009 07:57 PM
Subject:
Re: Issue 6403: Enumertion Policy - some things for us to consider
Sent by:
public-ws-resource-access-request@w3.org



Maybe I'm missing the context, but (1) seems wrong to me (BTW - I'm 
assuming you meant "wsp:Optional=true"). Do we really want to constrain an 
endpoint to the operations defined in WS-Enum and no others? Why would we 
want to do that?

- gp

Katy Warr wrote: 

Just wondering whether we need to consider the following in the context of 
http://www.w3.org/Bugs/Public/show_bug.cgi?id=6403 proposal?: 

1) The wsenp:WSEnumeration policy indicates that WS-Enumeration MUST be 
used when communicating with this endpoint. I think this is shorthand for 
defining the data source enumeration operations at the endpoint (i.e. 
enumerate, pull, renew, getstatus and release).   
Because of the 'MUST', would it therefore be an error to attach 
wsenp:Ennumeration policy wsp:Optional=FALSE to an endpoint if that 
endpoint also supported other (non-enum) operations? 

2) We should consider whether an endpoint must advertise all the filter 
dialects that it supports using: 
  <x:FilterDialect xmlns:x="xs:anyURI" wsp:Optional="true"/> 
If we don't mandate that all supported filter dialects are advertised in 
the policy, do we need a mechanism for an enumeration endpoint to indicate 
that it does not support filtering at all (i.e. including a filter on the 
enumerate verb will return wesn:FilteringNotSupported)? 

Thanks, 
Katy




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