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From BW <b.du...@gmail.com>
Subject Re: Query-Servlet-XML-RPC
Date Fri, 13 Jan 2012 06:37:46 GMT
Ok Thx. I looked at that.  I'm trying to get a 30k view of the whole picture. Isn't the query
server component part of the substrate where the query handler gets attached? Suppose, I want
to deploy on 3 nodes; Query Handler to 1st for Query Server, Profile Handler to 2nd for Profile
Server and Query Handler to 3rd for Product Server?

-BW

On Jan 12, 2012, at 8:55 PM, "Mattmann, Chris A (388J)" <chris.a.mattmann@jpl.nasa.gov>
wrote:

> Hi BW:
> 
> In the current model, it's not done at all. The QueryServlet doesn't really exist
> since the advent of Web-Grid for the information integration components:
> 
> http://oodt.apache.org/components/maven/grid/
> 
> Check out the slides from Sean Kelly on that site, that describes web grid.
> Basically instead of the query server/servlet, we opted for a more REST
> service oriented style where users consume profile and product server
> end points via the Web Grid substrate.
> 
> Does that help?
> 
> Cheers,
> Chris
> 
> On Jan 12, 2012, at 8:50 PM, B W wrote:
> 
>> Correct me if I'm wrong, an initial query is posted via a user agent
>> browser to a servlet for the Query Service then:
>> The messaging layer broadcasts the query to registered Profile Services
>> that are running?
>> Is this done via XML-RPC or posting to the servlets on the Profile Servers?
>> 
>> 
>> I'm trying to figure out the whole thread.
>> 
>> Thx.
>> 
>> On Thu, Jan 12, 2012 at 8:22 PM, Mattmann, Chris A (388J) <
>> chris.a.mattmann@jpl.nasa.gov> wrote:
>> 
>>> Hey Sean,
>>> 
>>>> 
>>>> The ebXML model is one of the least egregious for a registry that I've
>>> seen, and believe me, I've seen some nasty ones. But what makes JPL's
>>> implementation so compelling is its JSON-esque and ReST-ful based API,
>>> which, as far as I can tell, is totally original within the ebXML & OASIS
>>> worlds.
>>>> 
>>>> Normally I turn my nose up to heavy-handed models with entrenched APIs,
>>> but the singular achievement of JPL is to make the ebXML model, which
>>> conceptually isn't byzantine, actually usable, approachable, and extendable.
>>> 
>>> Super +1.
>>> 
>>>> 
>>>> Is there any hope we can get JPL, Caltech, and NASA to give it up to
>>> become part of OODT? Or its own Incubator project?
>>> 
>>> I think Hardman is working on it, he can feel free to comment (or not)
>>> here ^_^
>>> 
>>> Cheers,
>>> Chris
>>> 
>>> ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
>>> Chris Mattmann, Ph.D.
>>> Senior Computer Scientist
>>> NASA Jet Propulsion Laboratory Pasadena, CA 91109 USA
>>> Office: 171-266B, Mailstop: 171-246
>>> Email: chris.a.mattmann@nasa.gov
>>> WWW:   http://sunset.usc.edu/~mattmann/
>>> ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
>>> Adjunct Assistant Professor, Computer Science Department
>>> University of Southern California, Los Angeles, CA 90089 USA
>>> ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
>>> 
>>> 
> 
> 
> ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
> Chris Mattmann, Ph.D.
> Senior Computer Scientist
> NASA Jet Propulsion Laboratory Pasadena, CA 91109 USA
> Office: 171-266B, Mailstop: 171-246
> Email: chris.a.mattmann@nasa.gov
> WWW:   http://sunset.usc.edu/~mattmann/
> ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
> Adjunct Assistant Professor, Computer Science Department
> University of Southern California, Los Angeles, CA 90089 USA
> ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
> 

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