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- add and remove relationships incrementally
- get a subset of relationships
Approaches
We talked started by talking about a couple general approaches during the November 3rd Committer Meeting (see notes and audio here).
- Generic endpoint for updating / querying all relationships in the repository. This would allow one to update relationships without specifying which object or datastream they resided in explicitly. There was some concern that this might result in confusion because it sets up the expectation that arbitrary RDF is accepted, but in reality, it would only accept changes that were valid in RELS-EXT and RELS-INT datastreams (e.g., those whose subject is a Fedora object and whose predicate is not a reserved predicate).
- Object-specific endpoints for updating relationships on a per-datastream basis. This approach would require that applications using the API are aware of which objects and datastreams the relationships are asserted in. While discussing this approach, we noted that this pattern could be followed in a general way to make partial datastream updates possible for other types of datastreams as well.
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