In DataCite/Datacite export, when the user enters a Keyword Term URI, include Keyword Term URI in the `valueURI` property of the `subject` property

[jggautier]

Overview of the Feature Request

When the user enters a Keyword Term URI, the DataCite/Datacite export should include the Keyword Term URI in the valueURI property of the subject property, as the OpenAIRE/oai_datacite export already does. Currently, the DataCite/Datacite export excludes the Keyword Term URI from the valueURI property.

This issue is part of a larger effort to align both metadata exports, described in #11916 and #12281. @qqmyers worked on this change in his PR at #12346. When merged, that PR will mark this issue as done.

What kind of user is the feature intended for?

API User, Superuser, and Sysadmin

What inspired the request?

This is part of a larger effort to align the OpenAIRE/oai_datacite and DataCite/Datacite metadata exports. There is more context at #11916 and #12281.

What existing behavior do you want changed?

Currently, the DataCite/Datacite export doesn't include a valueURI property with the Keyword Term URI. For example:

<subject
    schemeURI="https://controlledvocabularyurl1.org"
    subjectScheme="Keyword Vocab Name 1">Keyword Term 1
</subject>

<subject>Keyword Term 2</subject>

The OpenAIRE/oai_datacite export includes the Keyword Term URI in the valueURI property. For example:

<subject
    schemeURI="https://controlledvocabularyurl1.org"
    valueURI="https://keywordtermuri1.org"
    subjectScheme="Keyword Vocab Name 1">Keyword Term 1
</subject>

<subject
    valueURI="https://keywordtermuri2.org">Keyword Term 2
</subject>

The DataCite/Datacite export should be changed to include the Keyword Term URI in the valueURI property in the same way that the OpenAIRE/oai_datacite export does.

Any open or closed issues related to this feature request?

• Suggestion: Investigate ways to resolve confusion about and reduce the maintenance burden of the "Datacite" and "OpenAIRE" metadata exports #11916
• Feature Request: Align the DataCite/Datacite and OpenAIRE/oai_datacite exports that ship with Dataverse #12281
• DataCite Xml updates- 4.7, language, Translator, Keyword URI, etc. #12346

[jggautier]

@qqmyers told GitHub to close this issue when #12346 is merged, since he's already worked on this change in the PR he made.

I've removed this issue from the parent issue at #12281 that describes other changes needed to align Dataverse's DataCite/Datacite and OpenAIRE/oai_datacite exports.