Apple

@Override

public void validateForSave() throws NSValidation.ValidationException {

validateRemoteSystemId();

super.validateForSave();

}

//check that no Categories have this same remoteSystemID

public void validateRemoteSystemId() {

NSArray<Category> categories = SCEOFetcher.objectsMatchingKeyAndValue(editingContext(), Category.class, _Category.REMOTE_SYSTEM_ID_KEY, remoteSystemId(), EOFetcher.DBEC);

if (categories.count() > 1)

throw new NSValidation.ValidationException("Category Remote System Id must be unique.", this, REMOTE_SYSTEM_ID_KEY);

}

This works really well if there is already one in the DB with a value of say "123" and I try to add with with a value of "123".

This does not work if I try to add two at the same time with a value of "567", it allows them both through.

Does anyone have a strategy to catch uniqueness at the EOF level?

Or, is it fine to just rely on the DB throwing an SQLException and catch that after ec().saveChanges() ?

(I feel like letting that happen is bad, and might leave EOF in an un-happy state - is there any chance of that?)

Thanks again,

-Dan Grec