From: SRU (Search and Retrieve Via URL) Implementors [mailto:[log in to unmask]] On Behalf Of Theo van Veen
Sent: 28 March 2008 16:55
To: [log in to unmask]
Subject: Re: Price information in SRU responses
How many extra recordData fields will we have in the end? Users make use of a client. Clients can be smart enough to deal with unknown fields (alert the user or whatever). But users do not know that there are extra fields and clients will not request for all available extra fields because clients do not understand the semantics. Users do.
The extension mechanism heavily relies on bilateral agreements and a priori knowledge and raises the barrier for users to get extra information that is useful and available.
SRU(Search and Retrieve Via URL) Implementors [mailto:[log in to unmask]] Namens Janifer Gatenby
Verzonden: vrijdag 28 maart 2008 16:31
Aan: [log in to unmask]
Onderwerp: Re: Price information in
You can use extraRecordData to include price with any other resource description scheme. According to
SRU, the client must know that you provide price as extraRecordData and must request it else you may not send it.
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SRU(Search and Retrieve Via URL) Implementors [mailto:[log in to unmask]] On Behalf Of Ray Denenberg
Sent: 28 March 2008 16:19
To: [log in to unmask]
Subject: Re: Price information in
Sorry Mike but you can't do that.
Not if we're talking about the DC schema at:
There is no provision in that schema for non-dc elements.
(We could issue another version of the DC schema to allow this, and if someone thinks it's a good idea I'll draft it.)
----- Original Message -----
From: [log in to unmask] href="mailto:[log in to unmask]">Mike Taylor
To: [log in to unmask] href="mailto:[log in to unmask]">[log in to unmask]
Sent: Friday, March 28, 2008 11:01 AM
Subject: Price information in
Yakov Shafranovich writes:
> I am working on a
SRUgateway for a book publisher. One of the
> things I have run into is that there is no way to pass pricing
> information in
SRUwithout using the ONIX scheme. Is there a way to
> embed pricing information in
SRUresponses using other schemes?
Hi, Yakov. Sure, you can embed whatever information you want in
records transferred via
SRU, just as you can with any other XML
document. Just add the elements you want wherever they make most
sense in the record, and be sure to put them in a namespace other than
that of the standardised part of the record. For example:
<dc:record xmlns:dc='http://purl.org/dc/elements/1.1/' xmlns:mike='...'>
<dc:title>Poems for Bad Children</dc:title>
The problem is: how do you get the client application to recognise and
understand the extra information you've added? To make that work, you
need an agreement between server and client about the format of the
records -- in other words, the client needs to know that it will not
just be getting DC records, but DC-extended-with-mike:price records.
/o ) \/ Mike Taylor <[log in to unmask]> http://www.miketaylor.org.uk
)_v__/\ "A Linux system requires rebooting about as often as a Windoze
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