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)" <[email protected]> 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) < >> [email protected]> 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: [email protected] >>> 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: [email protected] > WWW: http://sunset.usc.edu/~mattmann/ > ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ > Adjunct Assistant Professor, Computer Science Department > University of Southern California, Los Angeles, CA 90089 USA > ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ >
