scholix does not capture the "added" and "removed" link action types.

[krzysztof]

Scholix definition does not seem to capture that once broadcasted relation can be "removed". This is fine if the model aims at describing the state which is to be queried from the HUB by parties (lack of relation is implicit to its removal), however it's not sufficient if the state changes are to be broadcasted through webhooks.

[lnielsen]

The scholix model just defines a link between two entities, so the information about addition/deletion should be captured by the transport protocol of the link. E.g if OAI-PMH is the transport protocol, then that will provide you with both added and removed links. Similarly, when using webhooks, it's the "webook scholix transport protocol" that needs to define this information.

I think we kind of captured this in having the events that define e.g. the type, id, timestamp etc, and then a payload of the event. So the event woudl be "link_added" "link_removed" and the payload would contain the link in question.

[krzysztof]

{
    “event_id”: "33bace47-dd2e-4fd7-bc02-b5c1c980c3d4",
    "time": 1507214201.550862,
    “event_type”: “relation_created”,
    “source”: “Zenodo”
    “payload”: {...}  # scholix model
}