Issue i063 [[ws-rx] NEW ISSUE: SeqAck - None and Final]

[Doug Bunting <Doug.Bunting@Sun.COM>]

[Yes, I'm catching up late.]

This proposal would allow the SequenceAcknowledgement element to be 
empty.  It does not however associate any error condition or useful 
semantics with that case.  Two possibilities occur to me:

   1. ensure the schema prevents the empty case

    <wsrm:SequenceAcknowledgement ...>
      <wsrm:Identifier ...> xs:anyURI </wsrm:Identifier>
        [ <wsrm:Final/>
          | [ [ <wsrm:AcknowledgementRange ...
                Upper="xs:unsignedLong"
                Lower="xs:unsignedLong"/> +
                | <wsrm:None/> ]
               <wsrm:Final/> ? ]
          | <wsrm:Nack> xs:unsignedLong </wsrm:Nack> + ]
        ...
    </wsrm:SequenceAcknowledgement>

   2. disallow Final without either None or an AcknowledgementRange
      sequence; I do not know what Final alone means, could you point me
      to the defining text in the specification:

    <wsrm:SequenceAcknowledgement ...>
      <wsrm:Identifier ...> xs:anyURI </wsrm:Identifier>
        [ [ <wsrm:AcknowledgementRange ...
              Upper="xs:unsignedLong"
              Lower="xs:unsignedLong"/> +
            | <wsrm:None/> ]
            <wsrm:Final/> ?
          | <wsrm:Nack> xs:unsignedLong </wsrm:Nack> + ]
        ...
    </wsrm:SequenceAcknowledgement>

In either case, line 385[1] must change from "when sending 
AcknowledgementRanges" to "when sending AcknowledgementRange sequences 
or None".

I prefer option 2.

thanx,
    doug

On 30/10/05 09:38, Doug Davis wrote:

>
> Title: SeqAck - None and Final
>
> Description:  In [1] current schema and pseudo schema doesn't allow 
> None and Final on the same SeqAck - and they should be.
>
> Justification: Its possible that a sequence could be closed w/o any Acks.
>
> Target: core
>
> Proposal: Make schema and pseudo schema support None and Final - like 
> this:
>
> <wsrm:SequenceAcknowledgement ...>
>   <wsrm:Identifier ...> xs:anyURI </wsrm:Identifier>
>     [ [ <wsrm:AcknowledgementRange ...
>           Upper="xs:unsignedLong"
>           Lower="xs:unsignedLong"/> *
>         | <wsrm:None/> ]
>         <wsrm:Final/> ?
>       | <wsrm:Nack> xs:unsignedLong </wsrm:Nack> + ]
>     ...
> </wsrm:SequenceAcknowledgement>
>
> Note: changed the + to a * on the AckRange element. since Final can 
> appear w/o any AckRanges.
>
>
> [1] 
> http://www.oasis-open.org/apps/org/workgroup/ws-rx/download.php/15001/wsrm-1.1-spec-wd-05.pdf