Class Change

source code

I represent a single change to the source tree. This may involve several files, but they are all changed by the same person, and there is a change comment for the group as a whole.

If the version control system supports sequential repository- (or branch-) wide change numbers (like SVN, P4, and Arch), then revision= should be set to that number. The highest such number will be used at checkout time to get the correct set of files.

If it does not (like CVS), when= should be set to the timestamp (seconds since epoch, as returned by time.time()) when the change was made. when= will be filled in for you (to the current time) if you omit it, which is suitable for ChangeSources which have no way of getting more accurate timestamps.

The revision= and branch= values must be ASCII bytestrings, since they will eventually be used in a ShellCommand and passed to os.exec(), which requires bytestrings. These values will also be stored in a database, possibly as unicode, so they must be safely convertable back and forth. This restriction may be relaxed in the future.

Changes should be submitted to ChangeMaster.addChange() in chronologically increasing order. Out-of-order changes will probably cause the web status displays to be corrupted.