ufal
OAI-PMH oddities in dim metadataformat
curl --no-progress-meter "https://lindat.mff.cuni.cz/repository/server/oai/request?verb=GetRecord&metadataPrefix=dim&identifier=oai:lindat.mff.cuni.cz:20.500.12801/3901488-03" | xmllint --format -
<?xml version="1.0" encoding="UTF-8"?>
<?xml-stylesheet type="text/xsl" href="static/style.xsl"?>
<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>2025-08-04T14:24:17Z</responseDate>
<request verb="GetRecord" identifier="oai:lindat.mff.cuni.cz:20.500.12801/3901488-03" metadataPrefix="dim">https://lindat.mff.cuni.cz/repository/server/oai/request</request>
<GetRecord>
<record>
<header>
<identifier>oai:lindat.mff.cuni.cz:20.500.12801/3901488-03</identifier>
<datestamp>2025-06-24T19:43:00Z</datestamp>
<setSpec>com_20.500.12801_1</setSpec>
<setSpec>com_20.500.12800_1</setSpec>
<setSpec>col_20.500.12801_3</setSpec>
</header>
<metadata>
<dim:dim xmlns:dim="http://www.dspace.org/xmlns/dspace/dim" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:doc="http://www.lyncode.com/xoai" xsi:schemaLocation="http://www.dspace.org/xmlns/dspace/dim http://www.dspace.org/schema/dim.xsd"><dim:field mdschema="dc" element="contributor" qualifier="author">Veselý, Bohumil</dim:field><dim:field mdschema="dc" element="date" qualifier="accessioned">2021-10-18T20:39:15Z</dim:field><dim:field mdschema="dc" element="date" qualifier="available">2021-10-18T20:39:15Z</dim:field><dim:field mdschema="dc" element="date" qualifier="issued" lang="*">0000</dim:field><dim:field mdschema="dc" element="identifier" qualifier="other">3901488-03</dim:field><dim:field mdschema="dc" element="identifier" qualifier="uri">http://hdl.handle.net/20.500.12801/3901488-03</dim:field><dim:field mdschema="dc" element="description">Librarian Bohumír Lifka on Bohumil Veselý's balcony.</dim:field><dim:field mdschema="dc" element="language" qualifier="iso">zxx</dim:field><dim:field mdschema="dc" element="publisher">Národní filmový archiv</dim:field><dim:field mdschema="dc" element="rights" lang="*">Creative Commons - Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)</dim:field><dim:field mdschema="dc" element="rights" qualifier="uri" lang="*">http://creativecommons.org/licenses/by-nc-nd/4.0/</dim:field><dim:field mdschema="dc" element="rights" qualifier="label" lang="*">PUB</dim:field><dim:field mdschema="dc" element="subject">klobouk smeknutí</dim:field><dim:field mdschema="dc" element="subject">Galerie osobností</dim:field><dim:field mdschema="dc" element="subject">Places::Praha::Nové Město::Školská::pavlač Bohumila Veselého</dim:field><dim:field mdschema="dc" element="subject">People::Lifka Bohumír (1900-1987)</dim:field><dim:field mdschema="dc" element="title">Bohumír Lifka (librarian)</dim:field><dim:field mdschema="dc" element="type">clip</dim:field><dim:field mdschema="local" element="approximateDate" qualifier="issued">cca 1930-1965</dim:field><dim:field mdschema="local" element="contact" qualifier="person">Technical;Contact;[email protected];Národní filmový archiv</dim:field><dim:field mdschema="local" element="has" qualifier="files" lang="*">yes</dim:field><dim:field mdschema="local" element="branding">NFA</dim:field><dim:field mdschema="local" element="refbox" qualifier="format">{title}, {publisher}, {repository}, {pid}.</dim:field><dim:field mdschema="local" element="language" qualifier="name">Nolinguistic content</dim:field><dim:field mdschema="local" element="files" qualifier="size" lang="*">241650171</dim:field><dim:field mdschema="local" element="files" qualifier="count" lang="*">2</dim:field><dim:field mdschema="metashare" element="ResourceInfo#ContentInfo" qualifier="mediaType">video</dim:field>restricted</dim:dim>
</metadata>
</record>
</GetRecord>
</OAI-PMH>
especially:
qualifier="mediaType">video</dim:field>restricted</dim:dim>
This actually seem to be two issues:
1. for some reason the xoai metadataFormat (the source for the xslt transformations) has:
<element name="access-status">
<field name="value">restricted</field>
</element>
restricted doesn't feel right for this item; the collections this is in, has Anonymous in the DEFAULT READ group, but also other groups:
(investigate from: https://github.com/ufal/clarin-dspace/blob/f88207792ad2bde02b28a9b7a834823f5ffc71dd/dspace-oai/src/main/java/org/dspace/xoai/app/plugins/AccessStatusElementItemCompilePlugin.java#L55)
2. the apply-templates in dim xslt
(https://github.com/ufal/clarin-dspace/blob/54805a83181cca4d214d1cbc3ae3fd772cdf2ec3/dspace/config/crosswalks/oai/metadataFormats/dim.xsl#L11) and I guess a default text template, makes the access-status appear in dim:dim (this seems similar to what was happening in https://github.com/DSpace/DSpace/issues/6556)
As far as (1)
<element name="access-status">
<field name="value">restricted</field>
</element>
This refers surprisingly to a bitstream resource policy that is, in this case restricted for "anonymous" users.
Available values are:
metadata.only - item has no bitstreams open.access - bitstream has no READ restriction (available for anonymous user) restricted - bitstream READ access is set for some user group(s) - not for anonymous user embargo - bitstream READ access is set for anonymous user but with embargo (valid until some date) unknown - bitstream READ access is set for some explicit user only (not for any group)
In case of embargo, the embargo date is available also in XOAI metadata format:
<element name="access-status">
<field name="value">embargo</field>
<field name="embargo">2025-08-08</field>
</element>
Note that the "access-status" element is related only to the first bitstream from the item's ORIGINAL bundle.
As far as (2) (You're are right @kosarko) This is the result of the default xsl:template, that is
<xsl:template match="text()|@*">
<xsl:value-of select="."/>
</xsl:template>
In the fix, the default template was overwritten with an EMPTY template that doesn't produce any output:
<xsl:template match="text()|@*"/>
This template has the lowest priority, and is applied only when other templates are not applied.
See the Default Templetes and also the Templates Priorities
I've found out this is also tracked in upstream https://github.com/DSpace/DSpace/issues/10397
Hi Ondrej (@kosarko)
That upstream fix creates the following dim:field element:
<dim:field mdschema="others" element="access-status">restricted</dim:field>
Our fix just ignores all elements that have not xsl:template specified.
May be, we should combine those two fixes. What you think?