On Mon, Sep 5, 2011 at 6:31 PM, Vincent Massol <[email protected]> wrote: > Hi devs, > > I'd like to brainstorm about the idea of having global versioning in XE. > > First here is a use case: > * I have a given state in my wiki with pages in different versions > * I add some pages or make modifications to existing pages > * I want to go back to the previous state > > A good use case could be for example to return to a state before one or > several applications have been installed. > > Proposed solution > ============== > > * Store a global version number in the DB. Let's call it VERSION > * Whenever a doc is modified, use VERSION + 1 as the new doc version > * When we rollback (to say version OLDVERSION) do a query on all docs in the > wiki having a version > OLDVERSION and for each of them rollback to their > last version <= OLDVERSION > * Write a migrator that runs the whole wiki history by looking at all > versions of all docs (map in memory) and recompute the new version starting a > VERSION = 1 and incrementing. > * We would also need to modify the XAR importer so that importing a XAR with > an older versioning scheme will work. BTW knowing that it's an old scheme is > relatively easy since all old versions have a dot in their name. > > More notes: > * This would also allow us to rollback before a given date > * If we wanted we could easily add the notion of Tags later on, i.e. to > associate a name with a VERSION > * I've been thinking about this in the context of the new model but it's > probably easier to implement it first with the old model > * JRCS uses the format X.Y for versions but we could decide to only use the > major, i.e always have versions of the form X.0 > * In order to continue to support minor edits we would need a way to save > that information. One solution is to use the minor to signify a minor edit, > for ex: X.1 would mean that X is a minor. Another, probably better solution > would be to store that information in the DB in the xwikircs table > > WDYT? Do you see any drawback of using a global versioning scheme? Do you > think this is doable or too much work? >
See lots of benefits and a bit of complexity for the implementation but should not be overwhelming. > Is there anything Git can tell us re managing versions that would be useful > to this discussion? I think we looks more like svn than git. > > Thanks > -Vincent > _______________________________________________ > devs mailing list > [email protected] > http://lists.xwiki.org/mailman/listinfo/devs > -- Thomas Mortagne _______________________________________________ devs mailing list [email protected] http://lists.xwiki.org/mailman/listinfo/devs
