Hi all - I need some help with core data fetching...
I have 1:N relationship between Project and Measurement entities. I
add all objects to managed context programatically using +
[NSEntityDescription
insertNewObjectForEntityForName:inManagedObjectContext]. First I add
Project object, then I add all child Measuerements as needed. After
the objects are added or updated, I save the data to XML files (the
two object types are saved to different persistent stores).
This works fine, the files save and load correctly. When I later want
to fetch the measurements in my custom NSTableView data cell to draw
the statistics, no measurement is fetched (I get empty array).
If I use the same code for fetching immediately after adding the
objects to the context, the fetching works... It looks like the
problem might be related to fact that I use different persistent store
for Project than for Measurement - if I fetch other objects saved in
the same persistent store, fetch works.
Any ideas? Cheers, Tom
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