http:request parsing question

On Tue, 2019-10-22 at 19:32 -0400, Bridger Dyson-Smith wrote: > > http://export.arxiv.org/oai2?verb=Identify'/>)//@status/data() > > returns '200', but trying > > http:send-request(<http:request method='get' href=' > http://export.arxiv.org/oai2?verb=Identify'/>)/h:response/@status > > fails.

On Tue, Oct 22, 2019 at 7:38 PM Liam R. E. Quin <liam at fromoldbooks.org> wrote: > On Tue, 2019-10-22 at 19:32 -0400, Bridger Dyson-Smith wrote: > > > > http://export.arxiv.org/oai2?verb=Identify'/>)//@status/data() > > > > returns '200', but trying > > > > http:send-request(<http:request method='get' href=' > > http://export.arxiv.org/oai2?verb=Identify'/>)/h:response/@status > > > > fails. > > I'm guessing that the first request sends you an auth token, and that > you're supposed to send this as a parameter in the second token? > > How exactly does the second call fail? > > Apologies for not clarifying. The @href points to an OAI-PMH endpoint,

> -- > Liam Quin, https://www.delightfulcomputing.com/ > Available for XML/Document/Information Architecture/XSLT/ > XSL/XQuery/Web/Text Processing/A11Y training, work & consulting. > Barefoot Web-slave, antique illustrations: http://www.fromoldbooks.org > > [1] The full response from arXiv's OAI endpoint looks like this:

On Tue, Oct 22, 2019 at 11:13 PM Bridger Dyson-Smith <bdysonsmith at gmail.com> wrote: > Hi Liam! > > On Tue, Oct 22, 2019 at 7:38 PM Liam R. E. Quin <liam at fromoldbooks.org> > wrote: > >> On Tue, 2019-10-22 at 19:32 -0400, Bridger Dyson-Smith wrote: >> > >> > http://export.arxiv.org/oai2?verb=Identify'/>)//@status/data() >> > >> > returns '200', but trying >> > >> > http:send-request(<http:request method='get' href=' >> > http://export.arxiv.org/oai2?verb=Identify'/>)/h:response/@status >> > >> > fails. >> >> I'm guessing that the first request sends you an auth token, and that >> you're supposed to send this as a parameter in the second token? >> >> How exactly does the second call fail? >> >> Apologies for not clarifying. The @href points to an OAI-PMH endpoint, > which simply returns a XML response[1] saying, "This is an OAI-PMH > endpoint, here's an administrator's email address, plus some other stuff." > So, there aren't any tokens being passed back in forth in this case (to be > honest, there are resumption tokens that can be passed back in to an OAI > provider for other types of requests). > > I had thought it might be a good idea to try to think about the HTTP > status ('200', '404', etc) in a thing I'm working on, and while I realize I > can get to it with a `//@status` , I had thought a more direct expression > would be more suited (what if there are other `@status` attributes, etc). I > even tried taking my shoes off, to no avail. :) > > In any case, thank you! > Best, > Bridger > > After thinking about this some more, I realized that wrapping the overall

>> -- >> Liam Quin, https://www.delightfulcomputing.com/ >> Available for XML/Document/Information Architecture/XSLT/ >> XSL/XQuery/Web/Text Processing/A11Y training, work & consulting. >> Barefoot Web-slave, antique illustrations: http://www.fromoldbooks.org >> >> [1] The full response from arXiv's OAI endpoint looks like this: > ``` > > <?xml version="1.0" encoding="UTF-8"?><OAI-PMH xmlns="http://www.openarchives.org/OAI/2.0/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/ http://www.openarchives.org/OAI/2.0/OAI-PMH.xsd"><responseDate>2019-10-22T23:18:26Z</responseDate><request verb="Identify">http://export.arxiv.org/oai2</request><Identify><repositoryName>arXiv</repositoryName><baseURL>http://export.arxiv.org/oai2</baseURL><protocolVersion>2.0</protocolVersion><adminEmail>help at arxiv.org</adminEmail><earliestDatestamp>2007-05-23</earliestDatestamp><deletedRecord>persistent</deletedRecord><granularity>YYYY-MM-DD</granularity><description><eprints xmlns="http://www.openarchives.org/OAI/1.1/eprints" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/1.1/eprints http://www.openarchives.org/OAI/1.1/eprints.xsd"> <content> <text>Author self-archived e-prints</text> </content> <metadataPolicy> <text>Metadata harvesting permitted through OAI interface</text> <URL>http://arxiv.org/help/oa/metadataPolicy</URL> </metadataPolicy> <dataPolicy> <text>Full-content harvesting not permitted (except by special arrangement)</text> <URL>http://arxiv.org/help/oa/dataPolicy</URL> </dataPolicy> <submissionPolicy> <text>Author self-submission preferred, submissions screened for appropriateness.</text> <URL>http://arxiv.org/help/submit</URL> </submissionPolicy></eprints></description><description><branding xmlns="http://www.openarchives.org/OAI/2.0/branding/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/branding/ http://www.openarchives.org/OAI/2.0/branding.xsd"> <collectionIcon> <url>http://arxiv.org/OAI/arXivLogo.png</url> <link>http://arxiv.org/</link> <title>arXiv e-print archive</title> <width>88</width> <height>31</height> </collectionIcon><metadataRendering metadataNamespace="http://www.openarchives.org/OAI/2.0/oai_dc/" mimeType="text/xsl">http://arxiv.org/OAI/arXivMetadata.xsl</metadataRendering></branding></description></Identify></OAI-PMH> > > ``` >

> http:send-request(<http:request method='get' href='http://export.arxiv.org/oai2?verb=Identify'/>)/h:response/@status > fails.

On Mon, Oct 28, 2019 at 10:13 PM Christian Grün <christian.gruen at gmail.com> wrote: > Hi Bridger, > > > http:send-request(<http:request method='get' href=' > http://export.arxiv.org/oai2?verb=Identify'/>)/h:response/@status > > fails. > > The reason is that http:send-request returns an http:response element > as first item. "/h:response" is just another writing for > "/child::h:response", As the response has no other response child, you > won’t get any result. This is what you can do instead: > > 1. Use the self axis: > > let $data := http:send-request(<http:request method='get' > href='http://export.arxiv.org/oai2?verb=Identify'/>) > return $data/self::http:response/@status > > 2. Return the status attribute from the first result (which will > always be the http:response element): > > let $data := http:send-request(<http:request method='get' > href='http://export.arxiv.org/oai2?verb=Identify'/>) > return head($data)/@status > > Hope this helps, > Christian >