office-collab — archive

[Svante Schubert]

Due to Eastern Holidays and recent enlargement of my family we decided to cancel our next SC meeting. Our next meeting will be on the 6th of April: http://www.timeanddate.com/worldclock/meetingdetails.html?year=2016&month=04&day=6&hour=14&min=30&sec=0&p1=179&p2=37&p3=136&p4=234&iv=1800 The teleconference login data for next call will be found in the OASIS calendar event: https://www.oasis-open.org/apps/org/workgroup/office-collab/event.php?event_id=39492 Please find the IRC log of last meeting below: Attendees: Patrick, Peter, Svante [16:29] Svante Schubert: Hello Peter [16:29] Svante Schubert: I am dialing in [16:30] Svante Schubert: Good timing [16:31] Peter Rakyta: Hi Svante [16:48] Svante Schubert: Lets figure out how to explain best a student working on Google Summer of Code (GSoC) the idea of operations, similar as done in the mail of yesterday [16:49] Svante Schubert: https://lists.oasis-open.org/archives/office-collab/201603/msg00000.html [16:49] Svante Schubert: for instance that the operations are not idempotent nor [16:49] Svante Schubert: commutative [16:53] Svante Schubert: Example for commutative with two operations: "Add A at position 1" and "Add B at position 2" [16:54] Svante Schubert: We have a ordered sequence of two operations [16:54] Svante Schubert: For the log reader: Commutative means they are exchangeable [16:54] Svante Schubert: by coming to the same end result (document state) [16:54] Svante Schubert: But in this case we need to change the positions [16:54] Svante Schubert: "Add B at position 1" and "Add A at position 1" [16:54] Svante Schubert: Right? [16:55] Svante Schubert: And idempotent means you can apply the same operation multiple times and the same document will occur, which is in general not the case. [16:55] Svante Schubert: For example adding a character will always change the document state. [17:02] Svante Schubert: Changes starting from a state of a document, similar to a versioning commit from a source state (revision) [17:22] Svante Schubert: e.g. https://en.wikipedia.org/wiki/Vector_clocks [17:23] Svante Schubert: ^^ the picture says more than the text, which seems more complicated than necessary