A document class that mimics UIManagedDocument to support Core Data in all its modern glory:

• Saves to a file package

• On 10.7+, asynchronous saving is supported. We set up a parent/child pair of contexts; the parent saves on its own thread

• Full support for concurrent document opening too

• Subclasses can hook in to manage additional content inside the package

• A hook is also provided at the best time to set metadata for the store

• New docs have the bundle bit set on them. It means that if the doc gets transferred to a Mac without your app installed, with the bundle bit still intact, it will still appear in the Finder as a file package rather than a folder

• If the document moves on disk, Core Data is kept informed of the new location

• If multiple validation errors occur during saving, the presented error is adjusted to make debugging a little easier

• And of course, full support for Autosave-In-Place and Versions

License (BSD)

Standard BSD licence.

Please see the header file for the full text.