Difference between revisions of "Track Merging"

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Revision as of 14:23, 19 February 2008



TrackMerging is a simplified version of TrackGrouping. The basic idea is to allow a single "song" object to be shared by multiple "album" objects. A "song" object contains a collection of "track" objects, including their respective titles, durations, track numbers, and PUIDs. This would clear up a significant amount of redundant data and allow us to pool similar PUIDs into a single object such that there would be absolutely no PUID collisions between the objects. Implementing this concept will be one of the many incremental steps toward the NextGenerationSchema goal.

TrackMerging is currently being worked on by LukasLalinsky in the following branch: http://bugs.musicbrainz.org/browser/mb_server/branches/track-merging

Below is a collection of all the various ideas/notes we've had regarding this feature:

Here are some notes from an IRC conversation we had some time ago (LukasLalinsky, Jugdish and BrianFreud). But I can't remember some details, and somehow find it on chatlogs, so it's possible that something is incorrect. (If somebody can find the IRC log, please add the link here.) -- 16:04, 02 October 2007 (UTC)

  • Adding new album will always add new master entities.
  • Masters have no explicit titles, everything is derived from attached tracks.
  • It will be possible to merge masters.
  • It will be possible to split some tracks of a master.
  • The release editor can be used only to edit tracks, not masters or track<->master associations.
  •  ? Significant change to track title will automatically detach the track from the current master (if more than one track is attached to it)
  • There are no track ARs, adding an AR to track will transparently add it to the master.
  • PUIDs are attached to masters. (theoretically, no two masters should share the same PUID)
  •  ? Durations are attached to masters, not tracks.