I think we said from the beginning that version 1.0 would be replaced, not
upgraded. I don't think we ever promised smooth upward compatibility. The
first version was an experiment that would lead, within one or two more
versions at most, to a stable final version.
Let the 1.0 clients go.
Ralph
-----Original Message-----
From: Robert Sanderson [mailto:[log in to unmask]]
Sent: Tuesday, July 29, 2003 5:23 PM
To: [log in to unmask]
Subject: Re: 1.1 Versioning
> The problem with doing this is if a 1.1. client send such a request to a
> current 1.0 server, the server will return an error. This also includes
> any request to get the explain record, so we can't work out the version
> from that (or just keep trying different versions until we get
> something?)
Why can't we have version 1.0 servers and version 1.1 servers? If a
version 1.0 server gets a 1.1 request it's going to fail it at the toolkit
level because it doesn't conform to the spec. 1.0 talking to 1.0 will
still work, as will 1.1 to 1.1
The only advantage is a 1.0 client can still successfully send to a 1.1
server. At the expense of interoperability nightmare of having to
explicitly namespace every single element in the both request and
response.
Clients are easy to write and this is simply a matter to tweaking the
namespace up to http://.../srw/1.1/ and everything will go back to
working as expected (with the exception of Explain, and do any clients
self configure from it apart from my XSLT based one anyway?)
Are servers expected to support 1.0 and 1.1 at the same time? So if you
get a 1.0 request for explain you send back the xml, and if you get a 1.1
request you send back the record wrapper around it? This seems a rather
unuseful proposition to me, considering the current implementors are all
on the list (as far as we know) It's not like HTTP 1.0 and 1.1 where
there are a bazillion clients already in existence.
What do other people think?
Rob
--
,'/:. Dr Robert Sanderson ([log in to unmask])
,'-/::::. http://www.o-r-g.org/~azaroth/
,'--/::(@)::. Special Collections and Archives, extension 3142
,'---/::::::::::. Nebmedes: telnet: nebmedes.o-r-g.org 7777
____/:::::::::::::. WWW: http://nebmedes.o-r-g.org:8000/
I L L U M I N A T I
