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RE: Distributed searches in Z39.50?

From: Sebastian Hammer <quinn@indexdata.dk>
Date: Tue, 20 Apr 2004 19:17:11 +0200
Message-Id: <5.1.1.6.2.20040420191550.0527e198@www.indexdata.dk>
To: "ZIG" <www-zig@w3.org>


Time for SearchResult-2!

--Sebastian

At 13:40 20-04-2004 +0100, Matthew Dovey (LAS) wrote:

> > I think the most obvious solution, if you want to stay close
> > to what's in the current standard, involves a combination of
> > concurrent operations and
> > asynchronous resource control requests coming back from the
> > server.    The
> > User Information format SearchResult-1 already provides most
> > of the data elements you would want to describe partial
> > search results, and if you use this together with resource
> > control, it seems clear to me that the intent is that the
> > client should be able to issue present requests on the
> > partial results, even  before the final search response has
> > been received.
>
>The main limitation that I hit with this approach (and I think raised it
>at the time, so it will be in the archives of the ZIG list from about
>1998/1999!) is that the SearchResult-1 format can return how many
>records per database but not directly whether database returned an error
>or time-out (i.e. you can say a databse returned 0 results but not
>whether that was an error or a real 0 results) (without using other
>mechanisms to query what that 0 results means).
>
>Matthew

--
Sebastian Hammer, Index Data <http://www.indexdata.dk/>
Ph: +45 3341 0100, Fax: +45 3341 0101
Received on Tuesday, 20 April 2004 13:33:24 GMT

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