RE: [wsn] NP Topics resource property clarification

["Murray, Bryan P." <bryan.murray@hp.com>]

I see from your examples that you are using the June 2004 version of the
WS-BaseN spec. This version does have an inconsistency between the text
and the schema for the name of the resource property. My recommendation
is to use baseN:Topic for the name of the resource property as that is
the one used in the schema.

The most recent version of the WS-BaseN spec has renamed this property
to 'TopicExpression' and changed the value of minOccurs to '0'.

An example request (version June 2004) looks like:
<s:Body>
  <rp:GetResourceProperty>
    baseN:Topic
  </rp:GetResourceProperty>
</s:Body>

The corresponding response for a resource supporting all of the topics
in the 2 TopicSpaces you provided might look like:
<s:Body>
  <rp:GetResourcePropertyResponse>
    <baseN:Topic
Dialect="http://docs.oasis-open.org/wsn/2004/06/TopicExpression/Simple";>
      ts1:t1
    </baseN:Topic>
    <baseN:Topic
Dialect="http://docs.oasis-open.org/wsn/2004/06/TopicExpression/Simple";>
      ts2:t2
    </baseN:Topic>
    <baseN:Topic
Dialect="http://docs.oasis-open.org/wsn/2004/06/TopicExpression/Simple";>
      ts2:t22
    </baseN:Topic>
  </rp:GetResourcePropertyResponse>
</s:Body>

As you can see I have listed all of the topics individually using either
the Simple or Concrete topic expression dialects. I recommend this
approach for the Topic resource property, rather than using Full topic
expression, for the best chance at interoperability and for providing
the most information to an interested client.

Bryan


-----Original Message-----
From: rineholt@us.ibm.com [mailto:rineholt@us.ibm.com] 
Sent: Thursday, April 07, 2005 1:08 PM
To: wsn@lists.oasis-open.org
Subject: [wsn] NP Topics resource property clarification

I'm a little confused by the resource property a Notification Producer
should have that advertises which topics it supports. Basically Section
4.1 of WS-BaseNotification /wsnt:Topics.  The specification mentions
wsnt:Topics as the resource that contains the topics supported by the
NP.  Ok. But then it mentions "The set of topics is expressed using one
or more wsnt:Topic resource property element(s) ..what are these?
are they just child elements of the /wsnt:Topics RP ?  Are these RP in
their own right? 

The RP attribute in the WSDL has:
<xsd:element name="NotificationProducerRP">
  <xsd:complexType>
   <xsd:sequence>
     <xsd:element ref="wsnt:Topic" minOccurs="1" maxOccurs="unbounded"
/> 

If I understand correctly, The QName for this RP should be "wsnt:Topic"
which is a multivalued RP.
But then where does wsnt:Topics come into the picture?

I'd like to see given a concrete example lets say A NP that supports
notification on two topicspaces <wstop:topicSpace name="TSName1"
targetNamespace="http://example.org/name1";
 <wstop:topic name="t1"/>
</wstop:topicSpace>
<wstop:topicSpace name="TSName2"
targetNamespace="http://example.org/name2";
 <wstop:topic name="t2"/>
 <wstop:topic name="t22"/>
</wstop:topicSpace>

What should the GetRP request be to obtain the topics supported:
...
<soapenv:Body>
  <wsrp:GetResourceProperty">
   <!-- what qname please? -->
  </wsrp:GetResourceProperty>
</soapenv:Body>
...

and what whould the GetRP response be for this specific NP: (I'll settle
for any dialect :-) <soapenv:Body>
  <wsrp:GetResourcePropertyResponse">
   <!-- how should this response look like -->
  </wsrp:GetResourcePropertyResponse>
</soapenv:Body>


Thanks