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ZNG  May 2007

ZNG May 2007

Subject:

Re: Record Metadata Schema &x-info-99-metadata=true

From:

Rob Sanderson <[log in to unmask]>

Reply-To:

SRU (Search and Retrieve Via URL) Implementors

Date:

Thu, 3 May 2007 14:12:33 +0000

Content-Type:

text/plain

Parts/Attachments:

Parts/Attachments

text/plain (58 lines)

We also don't have a way to explain which of the tightly controlled list
the server supports for metadata retrieval.

So I'm with Mike on this one (yes, a flipflop, in the US political sense
rather than the antipodean footwear sense).

I'm also in favor of the language neutral '1' as the value.

I haven't written the schema up, but will get to it ASAP.

Rob

On Thu, 2007-05-03 at 14:09 +0100, Mike Taylor wrote:
> Ray Denenberg writes:
>  > From: Mike Taylor
>  > >It sounds the same as it did the last time we went round this subject
>  > 
>  > Not really. In fact not at all. Then, we were talking about
>  > allowing an arbitrary schema id. Here were talking about a
>  > controlled list (tightly controlled).
> 
> That is a fine distinction.  The issue is the same: either we pick one
> schema (in the knowledge that a client or server implementing that one
> will be able to interoperate with any server or client that implements
> the extension) or we allow a choice (with all the mismatching that
> implies).  To me, this is a no-brainer, but if anyone has a good
> reason why they want to be able to choose which of several candidate
> metadata schemas their server should support, I am ready to hear about
> it.
> 
>  > Your approach would be to name a well known schema?
> 
> Yes.
> 
>  > What would that be, Rec?
> 
> Yes.  (Does that exist yet?  If not, mybe Rob could make it, based on
> the elements in the corresponding context set.)
> 
>  > So what happens the first time someone asks for the capability to
>  > do this by some other schema?
> 
> They can already request that as a primary record using
> recordSchema=someOtherSchema
> 
>  > We define a new extension, similar to this one, for that schema.
> 
> No.
> 
>  > That's not good for interoperability either.
> 
> That's why we don't do it.
> 
>  _/|_	 ___________________________________________________________________
> /o ) \/  Mike Taylor    <[log in to unmask]>    http://www.miketaylor.org.uk
> )_v__/\  "Always avoid and eschew pleonastic redundancy" -- Unattributed,
> 	 on TFTD mailing list.

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