[OAI-implementers] multiple metadata formats in Listidentifiers

[Simeon Warner]

Hi Henk,

The resolution of the issue you mention in [1] was not to provide a 
facility for requesting multiple or 'best' metadata formats. The main 
reasons, if I recall correctly, were the difficulty in defining 'best' and 
in concerns about increased response size. Also the XML structure of the 
response would have to be changed to permit multiple metadata records each 
with about blocks. It wasn't considered to be a worthwhile optimization.

The solution if to make the two requests. Same amount of data transferred 
so no real harm.

Cheers,
Simeon


On Wed, 6 Dec 2006, Henk Enting wrote:
> Hello,
>
> If this question has already been asked (and answered): sorry for the inconvenience.
>
> Q: I would like to use the ListIdentifiers function with more than one metadata format. The way I understand OAI, I have to do multiple requests to get results for more than one metadata format, e.g.:
>
> 1st request: http://...../handleRequest.xml?verb=ListIdentifiers&metadataPrefix="oai_dc"
> 2nd request: http://...../handleRequest.xml?verb=ListIdentifiers&metadataPrefix="oai_czp"
>
> I already found an issue that covers this question [1]. It seems that the issue is still open, but it is a 2001 issue...!
>
> Could somebody tell me if this issue is resolved in OAI version 2.0?
>
> To make it more clear, I would like to do one of the following requests:
>
> http://...../handleRequest.xml?verb=ListIdentifiers&metadataPrefix="oai_dc&metadataPrefix="oai_czp"
> OR
> http://...../handleRequest.xml?verb=ListIdentifiers&metadataPrefix="oai_dc,oai_czp"
>
> Thank you in advance,
>
> Henk Enting
>
> [1] http://www.dlib.vt.edu/projects/OAI/reports/OAI-Tech_Issue__Multiple_Best_Metadata_Return.html
>
>
>
>
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