OAI server: missing setSpec headers

[PascalRepond]

How it works

The setSpec header should should be present in all OAI exported records and contain a list of all OAI sets that this record is a member of (see: https://www.openarchives.org/OAI/openarchivesprotocol.html).

• Records in ListRecords only have one setSpec (the organisation) but not other sets.

  • E.g.: https://sonar.ch/oai2d?verb=ListRecords&metadataPrefix=oai_dc&set=thesis_urn: records in this query should have at least setSpec: thesis_urn but they don't.

• Records in getRecord have no setSpec header.

  • E.g.: https://sonar.ch/oai2d?verb=GetRecord&metadataPrefix=oai_dc&identifier=oai:sonar.ch:309534 This record is a member of sets 'unifr' AND 'thesis_urn' but this is not reflected in the OAI record.

Improvement suggestion

OAI records that are part of one or multiple sets should always list these sets in the setSpec header.