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Subject: Re: [regrep] Reg/Rep & UDDI (was: Describing ebXML Reg/Rep ...)


You misunderstood.  I meant that I didn't think that UDDI is capable of 
handling the input from a ebXML Regrep replication because Regrep's 
data model is much more rich than UDDI's, as you suggest below.  I went 
on to say that ebXML regrep could replicate UDDI.

ebXML -> UDDI : Impedance Mismatch
UDDI -> ebXML: Ok

On Friday, Jan 31, 2003, at 09:50 America/Vancouver, Farrukh Najmi 

> Matthew MacKenzie wrote:
>> That's the rub -- I don't think a UDDI instance could replicate the 
>> contents of an ebXML Registry, but I think ebXML Registry could 
>> replicate the contents of a UDDI registry.  Granted, ebXML Registry 
>> will be weaker than UDDI for web service discovery because the UDDI 
>> API is oriented to that task specifically.
> I beg to disagree Matt. This may be a surprise to some but ebXML 
> Registry actually provides a much richer ability to publish and 
> discover web services than UDDI. Let me explain why I believe this to 
> be true:
> ebXML Registry does everything that UDDI does in the Service 
> Description space. In fact when this work was done it took UDDI V2 
> work in this area as a key input  (and with due credit).
> Beyond supporting *ALL* the basic things that UDDI does in Service 
> registration / discovery, ebXML Registry provides the following 
> additional features:
> -The Service Description (e.g. WSDL) can be stored in the repository 
> of the registry
> -The WSDL can benefit from full life cycle management features of 
> ebXML Registry like any other managed content
> -The WSDL can be automatically validated and cataloged upon submission
> -The WSDL can be discovered using ad hoc queries based on SQL and XML 
> filter query syntax
> -The ad hoc queries can predicate on content within the WSDL itself 
> allowing queries like:
> "Find all WSDL that import a certain file or use a certain name space 
> or use a certain portType etc."
> -Version can be maintained for the different version of the WSDL
> -Interested client can be notified when the a specific WSDL version 
> changes in specified ways
> -The WSDL can be associated in arbitrary ways with other objects such 
> as the Organizations that provide the service or organizations that 
> use the service.
> -The WSDL can be classified using arbitrary use-defined  taxonomies
> So I am not sure what it is that ebXML Registry does not do in Service 
> registration / discovery when compared with UDDI. Please correct me if 
> I am wrong.
>> Politically, I think we could get away with incorporating web 
>> services discovery.
> Matt, did you miss the fact that we incorporating web services 
> discovery in V2? That was the ROWS project (Registration of Web 
> Services) that Sanjay led, and boy it did create a mild "ROW" with our 
> friends in UDDI :-) As I recall they felt that Service registration 
> was something  that was UDDI's focus and ebXML Registry should not be 
> doing it.

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