Proposal: further constraining the EventSource view

[pietercolpaert]

Current proposal would be that the EventSource view must have relations with tree:path equal to the ldes:timestampPath

[pietercolpaert]

Revisiting what I said here:

An ldes:EventSource can only be added on a view that:

• has in-order updates: the ldes:timestampPath will only increase
• and therefore the state that can be kept by a client for doing sync/repl, can be done based on a timestamp + the members at that timestamp that were already visited.
• promises a best-effort to keep the repl and sync process as efficient as possible

It’s thus up to the publisher to decide whether that means indeed that the ldes:timestampPath is being used in the relations, or that a composed fragmentation is done